This document provides an introduction to computers, including their components, uses, and categories. It discusses how computers are used everywhere in daily life for tasks like searching information, editing photos, and sending messages. The key components of a computer are described as the input devices, output devices, system unit, storage devices, and communication devices. Examples of each type of component are also provided. The document outlines the advantages of computers as speed, reliability, storage, and communication capabilities. Potential disadvantages are also summarized as health risks, privacy violations, safety issues, and impacts on the workforce and environment. Finally, different categories of computers are defined, such as personal computers, mobile devices, servers, and supercomputers.
This document provides an overview of telecommunications components and transmission media. It describes the basic components required for communication between sending and receiving devices, including physical transmission media like twisted-pair cable, coaxial cable, and fiber-optic cable. It also covers wireless transmission media and different types of communication lines over the telephone network, such as dial-up, DSL, ISDN, and dedicated lines. Common communication devices like modems, network cards, routers and hubs/switches are also described.
This document provides an overview of different types of computers and computer components. It discusses microcomputers, desktops, laptops, tablets, smartphones, servers, workstations, minicomputers, and mainframe computers. It also describes computer hardware components like processors, memory, storage, monitors, printers, and speakers. The document outlines computer software, programming languages, compilers, interpreters, booting, file systems, and multimedia. It provides examples of number systems, data conversion between decimal and binary. It also discusses ASCII, Unicode, and includes documentation for Microsoft Word, Excel and PowerPoint 2010. Finally, it lists potential assignments related to using computers.
Output devices convey information from computers to users. Common output devices include display devices like LCD monitors and screens, printers, and speakers. LCD screens are often used in mobile devices and produce images using active or passive matrix technology. Inkjet printers are non-impact printers that form images by spraying tiny ink drops. Photo printers can produce photo-quality images.
Lesson 2.0 definition, importance, and advantages of computersJoshua Hernandez
This document defines computers and discusses their importance. It provides a modern definition of a computer as a multipurpose device that accepts input, processes data, stores data, and produces output according to stored instructions. It then lists key characteristics of computers like speed, storage, and accuracy. The document also outlines advantages like speed and reliability, and disadvantages such as health risks and impacts on the environment and workforce. Finally, it discusses the importance of computers in providing knowledge and information.
The document provides an overview of basic concepts in information technology, including definitions of information and computers. It describes how computers accept data as input, process it, and produce information as output. The main components of a computer system - hardware, software, and human users - are also summarized. Key hardware components like the central processing unit, memory, storage, and input/output devices are defined. The document also provides a brief introduction to operating systems and applications software.
A computer is an electronic device that can accept data as input, process the data, produce output, and store results. It performs these functions under the control of instructions stored in its memory. A computer includes input devices, output devices, a processor, memory, storage, and software. Common computer applications and uses include email, shopping, communication, and accessing information online.
This document provides an overview of computers and their components. It discusses the importance of computer literacy and defines a computer. It describes the basic components of a computer including hardware such as the system unit, storage devices, input/output devices, and software. It explains different types of computers including personal computers, handheld computers, internet appliances, mid-range servers, and mainframes. It also provides an introduction to computer networks and the internet.
The document provides an introduction to the basic concepts of computers including defining a computer, describing common computer hardware components like the CPU, memory, and storage devices, and explaining different types of computer software like operating systems, programming software, and applications. It also classifies computers by size from supercomputers to personal digital assistants and provides examples of common computer hardware and software components.
This document provides an overview of telecommunications components and transmission media. It describes the basic components required for communication between sending and receiving devices, including physical transmission media like twisted-pair cable, coaxial cable, and fiber-optic cable. It also covers wireless transmission media and different types of communication lines over the telephone network, such as dial-up, DSL, ISDN, and dedicated lines. Common communication devices like modems, network cards, routers and hubs/switches are also described.
This document provides an overview of different types of computers and computer components. It discusses microcomputers, desktops, laptops, tablets, smartphones, servers, workstations, minicomputers, and mainframe computers. It also describes computer hardware components like processors, memory, storage, monitors, printers, and speakers. The document outlines computer software, programming languages, compilers, interpreters, booting, file systems, and multimedia. It provides examples of number systems, data conversion between decimal and binary. It also discusses ASCII, Unicode, and includes documentation for Microsoft Word, Excel and PowerPoint 2010. Finally, it lists potential assignments related to using computers.
Output devices convey information from computers to users. Common output devices include display devices like LCD monitors and screens, printers, and speakers. LCD screens are often used in mobile devices and produce images using active or passive matrix technology. Inkjet printers are non-impact printers that form images by spraying tiny ink drops. Photo printers can produce photo-quality images.
Lesson 2.0 definition, importance, and advantages of computersJoshua Hernandez
This document defines computers and discusses their importance. It provides a modern definition of a computer as a multipurpose device that accepts input, processes data, stores data, and produces output according to stored instructions. It then lists key characteristics of computers like speed, storage, and accuracy. The document also outlines advantages like speed and reliability, and disadvantages such as health risks and impacts on the environment and workforce. Finally, it discusses the importance of computers in providing knowledge and information.
The document provides an overview of basic concepts in information technology, including definitions of information and computers. It describes how computers accept data as input, process it, and produce information as output. The main components of a computer system - hardware, software, and human users - are also summarized. Key hardware components like the central processing unit, memory, storage, and input/output devices are defined. The document also provides a brief introduction to operating systems and applications software.
A computer is an electronic device that can accept data as input, process the data, produce output, and store results. It performs these functions under the control of instructions stored in its memory. A computer includes input devices, output devices, a processor, memory, storage, and software. Common computer applications and uses include email, shopping, communication, and accessing information online.
This document provides an overview of computers and their components. It discusses the importance of computer literacy and defines a computer. It describes the basic components of a computer including hardware such as the system unit, storage devices, input/output devices, and software. It explains different types of computers including personal computers, handheld computers, internet appliances, mid-range servers, and mainframes. It also provides an introduction to computer networks and the internet.
The document provides an introduction to the basic concepts of computers including defining a computer, describing common computer hardware components like the CPU, memory, and storage devices, and explaining different types of computer software like operating systems, programming software, and applications. It also classifies computers by size from supercomputers to personal digital assistants and provides examples of common computer hardware and software components.
This document discusses computer output devices and technologies. It describes how monitors have evolved from being uncommon in the 1960s to being integral to the modern computing experience. It outlines the key components of monitors like the cathode ray tube and liquid crystal display, and how video cards impact display quality. The document also covers sound systems and ergonomic considerations for reducing eye strain and electromagnetic field exposure when working with monitors.
This document provides an overview of an introductory course on information technology. It outlines the course requirements, including exams, assignments, and a final project that contribute to the overall grade. It also describes lecture notes, written assignments, presentations, and other class activities. Tips are provided on how to earn more marks, such as avoiding plagiarism and demonstrating a strong work ethic. The course aims to teach basic computer knowledge, hardware, office applications, and internet skills.
This document is an introduction to computers that defines computers and their basic operations of input, processing, output, and storage. It describes different types of personal computers like desktops, laptops, tablets, and mobile devices. It explains the main internal and external components of computers and how they are used. It also discusses computer software, networks, the internet, online security threats, and provides guidance on purchasing different types of computers and mobile devices.
This document provides an overview of common computer input and output devices. It describes keyboards, pointing devices like mice and touchpads, scanners, cameras, microphones and sensors that serve as inputs. As outputs, it outlines monitors, projectors, speakers, printers like inkjet and laser printers, and actuators such as motors, pumps and buzzers that can control real-world devices. Input devices convert real-world data to digital signals for computers, while output devices take computers' digital outputs and display or actuate them in the physical world.
The document discusses different types of computers including palmtop, laptop, and mainframe computers. It defines hardware as the physical components of a computer and software as programs that run on hardware. The main hardware components are the central processing unit (CPU), memory, input devices, output devices, and storage devices. The CPU consists of a control unit and arithmetic logic unit. Memory includes both random access memory (RAM) and read-only memory (ROM). Software includes operating systems, application software, and utility software. An operating system controls the computer and allows other programs to run.
Chp 01 pti - basic concepts of computer systems and information technology ...YUSRA FERNANDO
Basic Concepts of Computer: A computer system is a combination of hardware and software. The physical and tangible parts/components of a computer that can be seen and touched are known as Hardware. When one looks at the computer system, he/she is actually looking at the computer hardware. The hardware consists of the physical components of a computer system like input devices (keyboard, mouse, scanner, etc.), output devices (monitor, printer, speaker, etc.), a processing device (CPU) and the storage device (Compact disk, hard disk, DVDs, etc.).
This document provides an overview of basic computer components and functions for Windows operating systems. It describes physical components such as the monitor, tower, keyboard, and mouse. It also covers how to power on the computer, log in, open programs, and use input devices. The document explains file systems, types of media like CDs and USB drives, printers, and basic functions such as copying and pasting. It concludes with warnings and advice that trial and error is the best way to learn to use a computer.
This document defines basic computer terminology including hardware, software, operating systems, and peripherals. It explains that a computer is a programmable machine that receives input, stores and manipulates data, and provides useful output. It also defines key hardware components like the motherboard, processor, and memory. It outlines common software types including operating systems, programming software, and applications. Finally, it describes the basic components of a website and network devices.
ICDL Module 1 - Concepts of ICT (Information and Communication Technology) - ...Michael Lew
ECDL/ICDL Module 1 - Concepts of ICT - Presentation Slides.
This module enables candidates to gain an understanding of the different parts of a computer, as well as some of the key concepts of Information and Communication Technology (ICT), such as those relating to networks and security.
On completion of this module each candidate will:
Understand what hardware is, know about factors that affect computer performance and know about peripheral devices
Understand what software is and give examples of common applications software and operating system software
Understand how information networks are used within computing, and be aware of the different options to connect to the Internet
Understand what Information and Communication Technology (ICT) is and give examples of its practical applications in everyday life
Understand health and safety and environmental issues in relation to using computers
Recognise important security issues associated with using computers
Recognise important legal issues in relation to copyright and data protection associated with using computers
Here are some key lessons we can learn from Nokia's downfall:
- Technological innovation moves fast. Companies must continuously invest in R&D to stay ahead of the curve and anticipate emerging trends. Nokia focused too much on its existing Symbian platform.
- Open platforms can gain mass adoption faster. While Nokia's Symbian was proprietary, Android was open source so it was adopted more widely by other manufacturers.
- User experience matters greatly. Early Android and iOS devices offered touchscreen interfaces that were more intuitive than Symbian. Nokia was slow to transition to touch.
- It's risky to rely on any single partner. Nokia bet big on Windows Phone but Microsoft's platform never gained critical mass.
This document provides an introduction to computers by defining key computer concepts and components. It explains that a computer accepts input, processes data using a central processing unit and memory, stores data, and produces output. Computer hardware includes input, processing, output, and storage devices. Software is divided into system software, like operating systems and utilities, and application software for tasks like word processing. Popular operating systems include Windows, Mac OS, and Linux. The document outlines the basic functions of a computer system and its hardware and software components.
This presentation represents an introduction to computer. I used every beginning lecture in my courses "Instructional Technology" and "Computer Fundamentals and its Applications".
This document provides an introduction and overview of computer networks. It defines a computer network as a group of interconnected computers that share resources. It discusses the history of computer networks including ARPANET, the precursor to the modern Internet. It also outlines the goals of computer networks such as resource sharing, high reliability, inter-process communication, and flexible access. Finally, it identifies some key hardware and software components that make up computer networks, including network interface cards, hubs, switches, routers, modems, and different cable types.
Understanding of Computer | Introduction | Computer In Business
Hello,
I am Saad Hasan from Begum Rokeya University, Rangpur.
All the Information of this slide is collected from "Fundamentals of Computer" written by E Balagurusamy. Any one can use for his presentations.
>>>>> If You Need Me to Create Slide for You,then You can find me through this link : https://www.linkedin.com/in/saadh393/
Basic overview of information technology and usesEbtissam Al-Madi
This document provides an overview of information technology and its uses in medicine and dentistry. It discusses types of computers from mainframes to personal devices. It covers data storage in computers and how digital data is represented. Computer hardware components like the central processing unit and memory are described. The document also discusses computer software including operating systems, applications, and programming languages. Additional topics covered include computer networks, the internet, biomedical computing challenges, and software engineering.
This document provides an introduction to computers and information technology. It defines key concepts like information, technology, communication technology, software, hardware, input devices, output devices, and types of computers. Software is divided into system software and application software. Hardware components include the system unit, storage devices, input devices like the keyboard and mouse, and output devices like monitors and printers. The document also includes exercises with questions about the differences between IT and ICT, information systems, data vs. information, computer components, and types of computers.
The document provides an overview of principles of information technology. It discusses what IT is and its role in economic and social development. It also covers the rapid evolution of IT and benefits in areas like education, healthcare, and government efficiency. The document then discusses basic computer concepts including hardware components, data organization, number systems, and storage capacities. It covers computer generations from first to fifth generation and concludes with an introduction to networking, discussing different network types, transmission media, and examples of internet, intranet, and extranet networks.
This document provides an overview of computer hardware and software components. It discusses how a computer system includes hardware, software, data, and users. The hardware components include the central processing unit (CPU), memory, input/output devices, and storage devices. The CPU consists of a control unit and arithmetic logic unit. Memory holds data and instructions for processing. Software includes system software like the operating system and application software. Data is represented digitally using binary numbers. The document also provides details on how computers process data using the CPU and memory.
"An Introduction to Computers" http://serverpartdeals.com -
The best place to buy server parts online, computer hardware supplies and computer networking products. We want to be your main computer parts supplier. Providing a reliable computer parts source to buy computer parts wholesale & server parts direct, online.
- See more at: http://serverpartdeals.com/#sthash.T7Moe4fN.dpuf
This document provides an overview of the key topics and objectives covered in Chapter 1 of Discovering Computers 2012. It defines what a computer is, describes the five main components, and discusses advantages and disadvantages of computer use. It also defines networks and the Internet, distinguishes between system and application software, and identifies different categories of computers and users. Finally, it discusses how computers are used in various sectors of society like education, healthcare, science and more.
The document discusses installing various hardware components into a computer and the safety precautions that should be taken when doing so. It describes installing a graphics card to improve graphics capabilities for gaming, a USB 3.0 PCIe card to enable faster data transfer speeds, and a WIFI PCI card to set up a wireless network. The document outlines potential dangers like back injuries from lifting heavy components and electrostatic discharge damage. It emphasizes using proper lifting techniques, grounding oneself on anti-static mats, and avoiding jewelry to reduce risks while working.
The document discusses the information processing cycle which consists of 4 steps: (1) input - entering data into the computer using devices like keyboards, mice, and scanners, (2) processing - performing operations on the data using the central processing unit (CPU) which interprets instructions and processes data, (3) output - displaying or producing the processed data, and (4) storage - saving the processed data in the computer's memory. The CPU, which can be a microprocessor, is the key component that executes programs and provides computers with their programmability.
This document discusses computer output devices and technologies. It describes how monitors have evolved from being uncommon in the 1960s to being integral to the modern computing experience. It outlines the key components of monitors like the cathode ray tube and liquid crystal display, and how video cards impact display quality. The document also covers sound systems and ergonomic considerations for reducing eye strain and electromagnetic field exposure when working with monitors.
This document provides an overview of an introductory course on information technology. It outlines the course requirements, including exams, assignments, and a final project that contribute to the overall grade. It also describes lecture notes, written assignments, presentations, and other class activities. Tips are provided on how to earn more marks, such as avoiding plagiarism and demonstrating a strong work ethic. The course aims to teach basic computer knowledge, hardware, office applications, and internet skills.
This document is an introduction to computers that defines computers and their basic operations of input, processing, output, and storage. It describes different types of personal computers like desktops, laptops, tablets, and mobile devices. It explains the main internal and external components of computers and how they are used. It also discusses computer software, networks, the internet, online security threats, and provides guidance on purchasing different types of computers and mobile devices.
This document provides an overview of common computer input and output devices. It describes keyboards, pointing devices like mice and touchpads, scanners, cameras, microphones and sensors that serve as inputs. As outputs, it outlines monitors, projectors, speakers, printers like inkjet and laser printers, and actuators such as motors, pumps and buzzers that can control real-world devices. Input devices convert real-world data to digital signals for computers, while output devices take computers' digital outputs and display or actuate them in the physical world.
The document discusses different types of computers including palmtop, laptop, and mainframe computers. It defines hardware as the physical components of a computer and software as programs that run on hardware. The main hardware components are the central processing unit (CPU), memory, input devices, output devices, and storage devices. The CPU consists of a control unit and arithmetic logic unit. Memory includes both random access memory (RAM) and read-only memory (ROM). Software includes operating systems, application software, and utility software. An operating system controls the computer and allows other programs to run.
Chp 01 pti - basic concepts of computer systems and information technology ...YUSRA FERNANDO
Basic Concepts of Computer: A computer system is a combination of hardware and software. The physical and tangible parts/components of a computer that can be seen and touched are known as Hardware. When one looks at the computer system, he/she is actually looking at the computer hardware. The hardware consists of the physical components of a computer system like input devices (keyboard, mouse, scanner, etc.), output devices (monitor, printer, speaker, etc.), a processing device (CPU) and the storage device (Compact disk, hard disk, DVDs, etc.).
This document provides an overview of basic computer components and functions for Windows operating systems. It describes physical components such as the monitor, tower, keyboard, and mouse. It also covers how to power on the computer, log in, open programs, and use input devices. The document explains file systems, types of media like CDs and USB drives, printers, and basic functions such as copying and pasting. It concludes with warnings and advice that trial and error is the best way to learn to use a computer.
This document defines basic computer terminology including hardware, software, operating systems, and peripherals. It explains that a computer is a programmable machine that receives input, stores and manipulates data, and provides useful output. It also defines key hardware components like the motherboard, processor, and memory. It outlines common software types including operating systems, programming software, and applications. Finally, it describes the basic components of a website and network devices.
ICDL Module 1 - Concepts of ICT (Information and Communication Technology) - ...Michael Lew
ECDL/ICDL Module 1 - Concepts of ICT - Presentation Slides.
This module enables candidates to gain an understanding of the different parts of a computer, as well as some of the key concepts of Information and Communication Technology (ICT), such as those relating to networks and security.
On completion of this module each candidate will:
Understand what hardware is, know about factors that affect computer performance and know about peripheral devices
Understand what software is and give examples of common applications software and operating system software
Understand how information networks are used within computing, and be aware of the different options to connect to the Internet
Understand what Information and Communication Technology (ICT) is and give examples of its practical applications in everyday life
Understand health and safety and environmental issues in relation to using computers
Recognise important security issues associated with using computers
Recognise important legal issues in relation to copyright and data protection associated with using computers
Here are some key lessons we can learn from Nokia's downfall:
- Technological innovation moves fast. Companies must continuously invest in R&D to stay ahead of the curve and anticipate emerging trends. Nokia focused too much on its existing Symbian platform.
- Open platforms can gain mass adoption faster. While Nokia's Symbian was proprietary, Android was open source so it was adopted more widely by other manufacturers.
- User experience matters greatly. Early Android and iOS devices offered touchscreen interfaces that were more intuitive than Symbian. Nokia was slow to transition to touch.
- It's risky to rely on any single partner. Nokia bet big on Windows Phone but Microsoft's platform never gained critical mass.
This document provides an introduction to computers by defining key computer concepts and components. It explains that a computer accepts input, processes data using a central processing unit and memory, stores data, and produces output. Computer hardware includes input, processing, output, and storage devices. Software is divided into system software, like operating systems and utilities, and application software for tasks like word processing. Popular operating systems include Windows, Mac OS, and Linux. The document outlines the basic functions of a computer system and its hardware and software components.
This presentation represents an introduction to computer. I used every beginning lecture in my courses "Instructional Technology" and "Computer Fundamentals and its Applications".
This document provides an introduction and overview of computer networks. It defines a computer network as a group of interconnected computers that share resources. It discusses the history of computer networks including ARPANET, the precursor to the modern Internet. It also outlines the goals of computer networks such as resource sharing, high reliability, inter-process communication, and flexible access. Finally, it identifies some key hardware and software components that make up computer networks, including network interface cards, hubs, switches, routers, modems, and different cable types.
Understanding of Computer | Introduction | Computer In Business
Hello,
I am Saad Hasan from Begum Rokeya University, Rangpur.
All the Information of this slide is collected from "Fundamentals of Computer" written by E Balagurusamy. Any one can use for his presentations.
>>>>> If You Need Me to Create Slide for You,then You can find me through this link : https://www.linkedin.com/in/saadh393/
Basic overview of information technology and usesEbtissam Al-Madi
This document provides an overview of information technology and its uses in medicine and dentistry. It discusses types of computers from mainframes to personal devices. It covers data storage in computers and how digital data is represented. Computer hardware components like the central processing unit and memory are described. The document also discusses computer software including operating systems, applications, and programming languages. Additional topics covered include computer networks, the internet, biomedical computing challenges, and software engineering.
This document provides an introduction to computers and information technology. It defines key concepts like information, technology, communication technology, software, hardware, input devices, output devices, and types of computers. Software is divided into system software and application software. Hardware components include the system unit, storage devices, input devices like the keyboard and mouse, and output devices like monitors and printers. The document also includes exercises with questions about the differences between IT and ICT, information systems, data vs. information, computer components, and types of computers.
The document provides an overview of principles of information technology. It discusses what IT is and its role in economic and social development. It also covers the rapid evolution of IT and benefits in areas like education, healthcare, and government efficiency. The document then discusses basic computer concepts including hardware components, data organization, number systems, and storage capacities. It covers computer generations from first to fifth generation and concludes with an introduction to networking, discussing different network types, transmission media, and examples of internet, intranet, and extranet networks.
This document provides an overview of computer hardware and software components. It discusses how a computer system includes hardware, software, data, and users. The hardware components include the central processing unit (CPU), memory, input/output devices, and storage devices. The CPU consists of a control unit and arithmetic logic unit. Memory holds data and instructions for processing. Software includes system software like the operating system and application software. Data is represented digitally using binary numbers. The document also provides details on how computers process data using the CPU and memory.
"An Introduction to Computers" http://serverpartdeals.com -
The best place to buy server parts online, computer hardware supplies and computer networking products. We want to be your main computer parts supplier. Providing a reliable computer parts source to buy computer parts wholesale & server parts direct, online.
- See more at: http://serverpartdeals.com/#sthash.T7Moe4fN.dpuf
This document provides an overview of the key topics and objectives covered in Chapter 1 of Discovering Computers 2012. It defines what a computer is, describes the five main components, and discusses advantages and disadvantages of computer use. It also defines networks and the Internet, distinguishes between system and application software, and identifies different categories of computers and users. Finally, it discusses how computers are used in various sectors of society like education, healthcare, science and more.
The document discusses installing various hardware components into a computer and the safety precautions that should be taken when doing so. It describes installing a graphics card to improve graphics capabilities for gaming, a USB 3.0 PCIe card to enable faster data transfer speeds, and a WIFI PCI card to set up a wireless network. The document outlines potential dangers like back injuries from lifting heavy components and electrostatic discharge damage. It emphasizes using proper lifting techniques, grounding oneself on anti-static mats, and avoiding jewelry to reduce risks while working.
The document discusses the information processing cycle which consists of 4 steps: (1) input - entering data into the computer using devices like keyboards, mice, and scanners, (2) processing - performing operations on the data using the central processing unit (CPU) which interprets instructions and processes data, (3) output - displaying or producing the processed data, and (4) storage - saving the processed data in the computer's memory. The CPU, which can be a microprocessor, is the key component that executes programs and provides computers with their programmability.
The document discusses the information processing cycle which has four stages: input, process, output, and distribute. It provides examples of how the brain and computers go through each stage. The input stage involves receiving information through the senses or peripherals. In the process stage, the brain or CPU makes sense of the data. The output stage presents the results through actions, writing, or peripherals. Finally, the distribute stage involves storing or sending the information for later use, completing the cycle.
The document summarizes various types of computer system configurations and usage modes. It discusses client-server systems and how they use various protocols. It also describes different types of server configurations to improve reliability through redundancy like simplex, duplex, and clustered systems. It outlines approaches to improve processing efficiency through multiprocessor and tandem systems. Finally, it summarizes different system usage modes like batch processing, online transaction processing (OTP), and real-time control processing systems.
The document discusses a computer hardware and servicing lesson about basic computer configuration setup and includes a quiz. The lesson covers:
1. What configuration is and the purpose of the BIOS in a computer's basic setup.
2. That the BIOS setup does not change when changing an operating system, as it is independent hardware-level software.
3. The quiz asks students to define configuration, the purpose of BIOS, whether BIOS changes with the operating system, and to list 5 operations that can be performed in BIOS setup.
Install computer system,devices and peripheralsRaiza Janelle
This document provides step-by-step instructions for installing computer hardware components and peripherals. It begins with disassembling a PC by unplugging all cables, removing screws from the case, and taking out components like the motherboard, CPU fan, power supply, drives, and RAM. It then describes reassembling the PC by installing these components in reverse order. Additional steps include connecting peripherals like the monitor, keyboard, mouse, and network cable to the appropriate ports. The overall goal is to teach readers how to independently assemble and disassemble a personal computer.
The document provides an introduction to computers and information technology. It discusses key concepts like data, information, hardware components of a computer including input, output and storage devices, software types, computer classifications based on size and capabilities, and how data is processed and stored in binary format. The document is part of an ICT skills course introducing students to foundational computer concepts.
This document provides an overview of foundational concepts in information systems. It defines key terms like systems, data, information, and knowledge. It also describes different types of information systems like operations information systems, transaction processing systems, and business process management systems. For each system type, the document outlines their main purposes and features.
K-12 Module in TLE - ICT Grade 9 [All Gradings]Daniel Manaog
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K-12 Module in TLE-9 ICT [All Gradings]
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This document provides an overview of computers, including what they are, their basic components, and different types. It defines a computer as an electronic device that can store, process, and retrieve data. Computers have both hardware, the physical parts, and software, sets of instructions. There are many types of computers including desktops, laptops, tablets, servers, smartphones, wearables, and game consoles. The document also discusses the information processing cycle of input, processing, storage, and output, as well as common uses of computers like calculations, word processing, data storage, and communications.
This document provides an introduction to computers, including their history, components, uses, and impact on society. It defines what a computer is and its basic functions of input, processing, output, storage, and communication. It also describes the major types of computers from embedded devices to supercomputers. Additionally, it explains computer networks and key Internet concepts like IP addresses, URLs, and email. Both the benefits of computers in our lives are discussed, such as access to information, as well as some risks like privacy issues and information integrity.
The document provides an overview of computers and their uses in society. It defines what a computer is and describes the typical components of a computer system, including input/output devices, the system unit, storage devices, and communications devices. It then discusses different categories of computers like personal computers, mobile devices, servers, and supercomputers. The document also outlines common computer applications in fields like education, healthcare, science, publishing, and manufacturing.
Categories of Computers in Information Technology.pdfrljruga
There are four main categories of computers: mainframe computers, supercomputers, minicomputers, and microcomputers or personal computers. Mainframe computers are large, powerful computers used by many users at the same time in large organizations. Supercomputers are the fastest and most powerful computers capable of processing over a quadrillion instructions per second. Minicomputers are medium-sized computers between mainframes and microcomputers, also used by many users. Microcomputers or personal computers can perform all computing tasks independently and include PCs, laptops, tablets, and other devices for individual use.
Microcomputers (personal computers)
Microcomputers became the most common type of computer in the late 20th century. The term “microcomputer” was introduced with the advent of systems based on single-chip microprocessors. The best-known early system was the Altair 8800, introduced in 1975. The term "microcomputer" has practically become an anachronism.
Computers can perform a variety of tasks and are present in many fields. A computer is a programmable electronic device that takes in data as input, processes it, and provides output. It has various hardware components like a central processing unit (CPU) and memory. The CPU contains an arithmetic logic unit and control unit and works with various input/output devices. Computers are fast, accurate, reliable, versatile and can store vast amounts of data. They are classified by size into supercomputers, mainframes, microcomputers, minicomputers, and workstations.
Lect01 Computers Impact on Our lives IOT and Big Data Era.pptxNourhanTarek23
This document provides information about a computer science course, including the course outline, textbook, evaluation criteria, and lecture topics. It also provides an introduction to the world of computers by discussing how computers are used in daily life and the basic functions of computers, including input, processing, output, storage, and communication. It defines the key components of computer hardware and software. It describes different types of computer users and professionals. It outlines the six main categories of computers: embedded systems, mobile devices, personal computers, servers, mainframes, and supercomputers.
Fundamentals of computer and information system(unit 1)SURBHI SAROHA
This document provides an overview of fundamentals of computer and information systems. It defines a computer as an electronic device that can store, process, and arrange information to produce outputs. The document then discusses characteristics of computers like speed, accuracy, versatility, and reliability. It outlines advantages such as multitasking, speed, data storage capacity, and accuracy. Limitations including viruses, cybercrimes, environmental impacts, and health issues are also summarized. The document categorizes types of computers as supercomputers, mainframes, minicomputers, workstations, and personal computers. It concludes by listing applications of computers in fields like banking, education, industries, entertainment, hospitals, and data processing.
This chapter introduces computers and their basic components. It defines a computer as an electronic device that can accept data as input, process the data, produce output, and store results. The main components of a computer are the system unit, input devices, output devices, storage devices, and communication devices. Examples of input devices include keyboards, mice, and scanners, while common output devices are monitors and printers. The chapter also discusses computer networks, the internet, and how they allow sharing of resources. It introduces concepts such as websites, webpages, web applications, blogs, podcasts, and how they are categorized as Web 2.0 sites.
A computer is an electronic device that processes data through an input device, storage, and output device. It contains hardware components like a system unit, storage, input, and output devices. Computers provide advantages like speed, reliability, and consistency but also health risks and impact privacy and the environment. Networks connect computers through communication devices and the Internet is a worldwide collection of networks used for communication, research, shopping, banking, entertainment and more. Computer software includes operating systems, applications, and programs that tell the computer how to process data. There are different types of computers including personal computers, mobile devices, servers, mainframes, supercomputers, and embedded computers.
The document discusses various computer peripherals including input devices like keyboards and mice, output devices like monitors and printers, storage devices like hard drives and USB drives, and communication devices like modems, routers, smartphones, and Bluetooth devices. It describes the functions of these different peripheral types and provides examples of specific peripherals like keyboards, scanners, speakers, hard drives, Wi-Fi routers, and Bluetooth speakers.
This document provides an overview of the course "Computers for Managers" including:
- The course code, credit units, and examination scheme which includes internals worth 30% and an end term exam worth 70% for a total of 100%.
- The course contents are divided into 6 modules covering topics such as computer networks, internet technology, e-commerce, ERP, DBMS, and office automation.
- Module 1 provides an introduction to the world of computers including their structure, uses in home, education, workplace, and on mobile devices across computer generations and types.
This document discusses the classification of computers based on their purpose, size, and data handling capabilities. It describes different types of computers including general purpose computers, specific purpose computers, analog computers, digital computers, hybrid computers, microcomputers, minicomputers, mainframe computers, and supercomputers. It provides examples of the world's fastest supercomputers and lists the top 10 computer manufacturers as of 2019.
Computer technology has progressed through five generations. First generation computers used vacuum tubes, punched cards, and were bulky, unreliable, and costly. The second generation saw the introduction of transistors, magnetic storage, and programming languages. Third generation computers integrated circuits, larger memory, and operating systems. The fourth generation began in 1971 with microprocessors on a single chip, GUIs, networks, and personal computers. Current and future fifth generation computers are based on artificial intelligence and natural language capabilities.
3. The basic working principles of modern computers were
given in the 1940s by American scientists John von Neumann,
G. Goldstein and A. Beris. These principles were implemented
in 1946 in the United States with the creation of a universal
computer called ENIAC. This date is considered to be the date
of creation of modern computer technology.
Since then, computer hardware and technology began to
develop rapidly and went through several stages:
5.Computers with electronic lamps. They were mainly used to
solve mathematical problems.
6.electronic computers whose element base consists mainly of
semiconductors. Electronic lamps were replaced by
semiconductor elements - transistors and diodes. Their
functional capabilities have increased significantly.
7.Computers based on elemental microelectronics and
integrated circuits. The basis of this generation was IBM
360/370. Based on it, EC computers and other electronic
computers were created in the former USSR
8. Micro and Mini computers created with large and very large
integrated circuit technology.A separate class of this generation
is personal computers. Their creation was revolutionary
10.When most people hear the word computer, they
think of a personal computer such as
a desktop or laptop. However, computers come in
many shapes and sizes, and they perform many different
functions in our daily lives. When you withdraw cash
from an ATM, scan groceries at the store, or use a
calculator, you're using a type of computer.
11.Many people use desktop computers at work,
home, and school. Desktop computers are designed to
be placed on a desk, and they're typically made up of a
few different parts, including the computer
case, monitor, keyboard, and mouse
12.The second type of computer you may be familiar
with is a laptop computer, commonly called a laptop.
Laptops are battery-powered computers that are more
portable than desktops, allowing you to use them
almost anywhere
13.Tablet computers—or tablets—are handheld
computers that are even more portable than laptops.
Instead of a keyboard and mouse, tablets use a touchsensitive screen for typing and navigation. The iPad is
an example of a tablet
This document provides an overview of Chapter 1 of the course "Introduction to Computer Applications". It defines what a computer is and discusses the components of a computer including input, output, storage, and processing devices. It also covers different types of computers categorized by size and use such as personal computers, mobile devices, servers, and embedded computers. Examples are given for how computers are used in various applications in society.
This document outlines topics related to computer networks including network layering, secure shell, virtual local area networks, routing protocols, and open shortest path first routing. Specific topics covered include VLAN types and attacks, inter-VLAN routing using router-on-a-stick, static and dynamic routing protocols, OSPF areas, link states, and router ID selection.
This document contains 7 questions about Open Shortest Path First (OSPF) routing protocol. It asks about the advantages of multi-area OSPF, the 2-layer area hierarchy in OSPF, Cisco's recommendation for routers per area, the 4 types of OSPF routers, identifying router types in a topology, explaining the first 5 OSPF Link State Advertisements (LSAs), and differentiating inter-area and external route summarization in multi-area OSPF.
This document outlines topics related to computer networks including: describing link-state operation in OSPF; explaining the five types of OSPF packets; discussing the use of hello packets and dead intervals; explaining the purpose of designated router and backup designated router election in multi-access networks; differentiating OSPFv2 and OSPFv3; describing router ID order of precedence in OSPFv3; and describing the adjacency database, link-state database, and forwarding database used in OSPF along with commands to display each.
This document provides instructions for using class C addresses and variable-length subnet masks to create addressing schemes for multiple companies and a school system. It describes setting up subnetting for four class C networks using addresses 192.168.10.0, 222.10.150.0, 199.55.78.0, and 222.22.2.0. It also describes subnetting the school system's class B address 172.32.0.0 to assign ranges to Eastern Elementary and South High School, utilizing both the third and fourth octets to create sub-subnets.
Static routing has advantages of simplicity and security but lacks flexibility. It is primarily used when network traffic is predictable and stable. The four types of static routes are default, summary, standard, and fully specified routes. A default static route defines the default gateway and is used when there is no specific route. Recursive lookup occurs when a router queries other routers for routing information to reach unknown networks. The document provides questions and tasks about configuring different static route types on routers R1 and R2 based on the given network topology.
Routers connect computer networks and use routing tables to determine the best path for forwarding packets between networks. They support process and fast switching to process packets, with fast switching being more efficient. Default gateways allow devices to communicate with other networks when a specific route is unknown. Router interfaces must meet criteria like having an IP address to be available. Loopback interfaces allow routers to test themselves without affecting live traffic. Routing tables contain network addresses, interfaces, and metrics to inform forwarding decisions.
This document provides tutorial questions on computer networks. It asks the student to: 1) Illustrate inter-VLAN routing using a router-on-a-stick topology with PC1 communicating with PC2; 2) Describe two methods for verifying routing; and 3) Identify two configuration errors preventing legacy routing based on the given topology. It also asks the student to discuss reasons for configuring SVIs, advantages of inter-VLAN routing with SVIs, and items to check for troubleshooting Layer 3 switching issues.
This document outlines topics to be covered in a tutorial on computer networks. It includes questions about different types of VLANs, the benefits of implementing VLANs, requirements for VoIP traffic networks, how VLANs control broadcast domains, differentiating normal and extended VLAN ranges, troubleshooting a network connectivity issue using provided topology and configuration files, discussing common trunk configuration errors and giving examples, and describing various switchport interface modes.
This document outlines topics for a tutorial on computer networks, including: explaining the switch boot sequence; comparing full-duplex and half-duplex communication; describing the auto-MDIX feature in switches and how to configure it; identifying four network access layer issues; explaining how Secure Shell works; discussing how MAC address flooding can be used by attackers to access other hosts' traffic; and describing two types of DHCP attacks.
This document outlines 6 questions for a tutorial on computer networks. The questions cover: 1) functions of access, distribution, and core layers in converged networks, 2) differences between fixed, modular, and stackable switches, 3) how switches make forwarding decisions, 4) how a switch populates its MAC address table when a frame is sent, 5) common business considerations for selecting switches, and 6) comparing two switch forwarding methods.
This document outlines the details of student group presentations for the BAIT1103 Internet Security Assignment. It lists 5 groups, with group leaders and members. It provides the presentation order, date, and submission deadline for each group. Group projects will be presented on March 21st or 28th, with submission dates mostly between March 14th-18th.
This document provides questions and information about internet security and firewalls. It asks the reader to list design goals and techniques used by firewalls, explain the difference between packet-filtering and stateful inspection firewalls, define application-level and circuit-level gateways, describe the characteristics of a bastion host, and examine and complete a packet filtering ruleset table. It also provides past exam questions asking about general firewall limitations and to identify a firewall type from a figure based on its advantages and disadvantages.
This document discusses firewalls, including their role and characteristics. Firewalls establish a controlled link between an internal network and the internet to protect the internal network. There are various types of firewalls such as packet filtering, stateful inspection, application-level gateways, and circuit-level gateways. Firewalls can be located individually on hosts, or in distributed configurations with internal and external firewalls and demilitarized zones (DMZs) to host public-facing servers. Virtual private networks (VPNs) and distributed firewalls provide additional security. The document provides examples of common firewall locations and topologies used in small to large organizations.
This document discusses topics related to internet security and intrusion detection systems. It asks 6 questions about techniques used to protect password files, benefits of intrusion detection systems, differences between statistical anomaly detection and rule-based intrusion detection, metrics used for profile-based intrusion detection, and the difference between rule-based anomaly detection and rule-based penetration identification. It also provides 2 past exam questions, one asking about classes of intruders, password guessing techniques, reasons to understand intruder behavior, and honeypot objectives; the other asks about honeypot objectives and techniques.
This document discusses computer intrusions and techniques for intrusion detection. It covers several key topics:
Types of intruders including masqueraders, misfeasors, and clandestine users. Examples of intrusions like password cracking and unauthorized access. Approaches to intrusion detection like statistical anomaly detection, rule-based detection, and signature-based detection. Tools for intrusion detection including intrusion detection systems, honeypots, and audit logs. Countermeasures against intrusions such as access controls, password management, and intrusion prevention systems.
In less than 3 sentences, this summary outlines the main topics covered in the document related to computer intrusions, intrusion detection techniques, and countermeasures. It
This document discusses Internet Protocol Security (IPSec). It provides examples and definitions of key IPSec concepts like transport mode and tunnel mode. It also lists past exam questions about IPSec that assess understanding of its applications, benefits, features, and use of transport and tunnel modes for authentication.
IPsec provides security at the IP layer by enabling encryption and authentication of IP packets. It has two modes: transport mode which secures end-to-end communication between hosts, and tunnel mode which secures traffic between security gateways. The Authentication Header (AH) provides data integrity and authentication, while the Encapsulating Security Payload (ESP) provides confidentiality through encryption. Security associations define the IP addresses and security parameters for unidirectional secure connections. Multiple security associations can be combined for added security through transport adjacency or iterated tunneling.
This document provides tutorial questions and past exam questions about internet security topics including PGP, MIME, S/MIME, and email encryption. PGP provides encryption, decryption, digital signatures, and authentication for email security using algorithms like RSA and IDEA. Messages are compressed before encryption in PGP to reduce file size. MIME defines email formatting standards and has message header fields for content type, encoding, and file attachments. S/MIME provides similar functions to PGP such as encryption, signatures, and authentication over email.
1. PGP provides encryption, authentication, compression, and email compatibility services for securing email. It uses public key cryptography with RSA and symmetric key algorithms like CAST-128 for encryption.
2. S/MIME is an internet standard that enhances email security based on MIME and uses PKI with digital certificates and X.509 standards. It supports encrypted, signed, and signed-encrypted email to provide confidentiality and authentication.
3. Both PGP and S/MIME aim to secure email, but S/MIME is an open standard while PGP was originally independent of standards bodies.
This document discusses Secure Electronic Transactions (SET) which provides a secure payment system for credit card transactions over the internet. It establishes a secure communication channel using encryption and ensures privacy through digital certificates verified by a Certificate Authority. The key participants in SET are merchants, cardholders, payment gateways and certificate authorities. Removing the Certificate Authority would compromise the system as it would no longer be able to verify the identities of other participants through digital certificates.
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
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Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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A review of the growth of the Israel Genealogy Research Association Database Collection for the last 12 months. Our collection is now passed the 3 million mark and still growing. See which archives have contributed the most. See the different types of records we have, and which years have had records added. You can also see what we have for the future.
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Assessment and Planning in Educational technology.pptxKavitha Krishnan
In an education system, it is understood that assessment is only for the students, but on the other hand, the Assessment of teachers is also an important aspect of the education system that ensures teachers are providing high-quality instruction to students. The assessment process can be used to provide feedback and support for professional development, to inform decisions about teacher retention or promotion, or to evaluate teacher effectiveness for accountability purposes.
Main Java[All of the Base Concepts}.docxadhitya5119
This is part 1 of my Java Learning Journey. This Contains Custom methods, classes, constructors, packages, multithreading , try- catch block, finally block and more.
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
Thinking of getting a dog? Be aware that breeds like Pit Bulls, Rottweilers, and German Shepherds can be loyal and dangerous. Proper training and socialization are crucial to preventing aggressive behaviors. Ensure safety by understanding their needs and always supervising interactions. Stay safe, and enjoy your furry friends!
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3. A World of Computers
• Computers are everywhere
– People use all types and size of computer for a variety
of reasons and in a range of places.
Search information
Listen to music
Home
Edit photos
Send
messages
Workplace
School
Pages 4 - 5
Figure 1-1 People use all types and sizes of computers in their daily activities
4. What is a computer?
• A computer is an electronic device, operating
under the control of instructions stored in its
own memory, that can accept data, process the
data according to specific rules, produce results,
and store results for future use.
Produce
results
Accept
data
Process
Store
results
Pages 6
5. Data and Information
Data
• Data is a collection of unprocessed items, which can
include text, numbers, images, audio and video.
Information
• Information conveys meaning and is useful to
people.
Data
Sally, 32, 24, 32
Computers
Process
Information
Sally Exam Results
Chinese 32 marks
Malay 24 marks
English 32 marks
8. Information Processing Cycle
1. Accepts raw data
Input
2. Process data into information 3. Produces results
Processing
Output
Storage
4. Stores results for
future use
Communications
Sending or retrieving data
Internet
5. Communicate with
other computers
9. The Components of a Computer
• A computer contains many electric, electronic, and
mechanical components known as hardware.
• These components include:
1.
2.
3.
4.
5.
Input devices
Output devices
System unit
Storage devices
Communication devices
10. The Components of a Computer
Input Device
• Allows you to enter data and instructions into a computer
Output Device
• Hardware component that conveys information to one or
more people
System Unit
Storage Device
Communications
Device
• Case that contains the electronic components of the
computer that are used to process data
• Holds data, instructions, and information for future use
• Enables a computer to send and receive data, instructions,
and information to and from one or more computers or
mobile devices
11. Input Devices
• It is a hardware component that allows people to
enter data and instructions into a computer.
• 5 widely used input devices are as below:
1.
2.
3.
4.
5.
Keyboard
Mouse
Microphone
Scanner
Webcam
14. Output Devices
• It is a hardware component that conveys
information to people.
• 3 commonly used output devices are below:
– Printer (produce text and graphics on a paper)
– Monitor (display text, graphics, video on a screen)
– Speakers (to hear music, voice, and other audio)
16. System Unit
• The system unit is a case that contains the
electronic components of the computer that are
used to process data.
• The circuitry of the system unit is connected to a
circuit board called the motherboard.
• 2 main components on the motherboard:
1. Processor (CPU – central processing unit)
2. Memory (E.g. RAM)
18. Storage Devices and Media
• Storage holds data, instructions, and information for
future use.
• Computers can store hundreds or millions of customer
names and address. Storage holds these items
permanently.
• Examples of storage media:
– USB flash drive, hard disk, optical disk, and memory cards.
• Examples of storage devices:
– DVD drive and CD ROM drive
20. Storage Device VS Storage Media
CD/DVD Drive
Storage device
Records and retrieves items to
and from storage media
Storage media
Physical material on which data,
instructions, and information
are stored
CD/DVD
21. Communication Devices
• It is a hardware components that enables a
computer to send and receive data, instructions,
and information to and from one or more
computer.
• Widely used communication device is a modem.
23. Advantages and Disadvantages
of using computers
• Advantages of
Using Computers
• Disadvantages of
Using Computers
Speed
Health Risks
Reliability
Violation of Privacy
Consistency
Public Safety
Storage
Impact on Labor Force
Communications
Impact on Environment
24. Advantages of using computers
Speed
Reliability
Consistency
Travel at incredibly fast speed
Have low failure rate
Given the a same input and process,
will produce the same results. This
phase called “garbage in, garbage out”
Storage
Store enormous amount of data and
make this data available for processing
anytime
Communication
Can share the store data, instructions,
and information
25. Disadvantages of using computers
• Health risks
– Prolonged or improper computer use can lead to injuries or disorder
of the hand, wrists, elbows, eyes, neck, and back.
– Repetitive strain injury: pain to arms, elbows, fingers and wrists due
to repetitive motion of typing and sitting in fixed position
– Prevention: proper workplace design, good posture sitting at work
desk and timely work break.
• Violation of privacy
– Personal and confidential records were not protected properly,
individuals have found their privacy violated and identities stolen.
• Public safety
– Unsuspecting, innocent computer users have fallen victim to crimes
committed by dangerous strangers.
26. Disadvantages of using computers
• Impact on labor force
– The skills of millions of employees have been
replaced by computers.
• Impact on environment
– Computer manufacturing processes and computer
waste are depleting natural resources and polluting
the environment.
– When computers are discarded in landfills, they
release toxic materials.
27. Green Computing
• Green computing involves reducing the electricity
consumed and environmental waste generated when
using a computer
• Strategies include:
– Recycling
– Regulating manufacturing processes
– Extending the life of computers
– Immediately donating or properly disposing of
replaced computers
28. Categories of Computers
Category
Personal computer
Mobile computer & mobile
devices
Game consoles
Servers
Mainframes
Supercomputers
Embedded computers
Physical Size
Fits on desk
Fits on lap or in hand
Small box or handheld
device
Small cabinet
Partial room to a full room of
equipment
Full room of equipment
Miniature
29. Personal Computers (PCs)
• A personal computer can
perform all of its input,
processing, output, and storage
activities by itself
• 2 popular architectures are the
PC and the Apple
• 2 types of PC are desktop and
notebook computers.
30. Mobile Computers & Mobile Devices
Mobile
Computer
Personal computer
you can carry from
place to place
Examples include
notebook
computers, laptop
computers, and
Tablet PCs
Mobile
Device
Computing device
small enough to
hold in your hand
Examples include
smart phones,
PDAs, handheld
computers,
portable media
players, and
digital cameras
31. Mobile Computer: Notebook
•
•
•
•
Also called laptop computer.
It is portable, personal computer
designed to fit on your lap.
Size is thin and lightweight, yet
they can be as powerful as the
average desktop computer.
More expensive than desktop
computer with equal capabilities.
32. Mobile Computer: Tablets PCs
•
•
•
Resembling a letter-sized
slate
You can interact with by
touching the screen with
your finger or a digital pen
Useful for taking notes in
lectures, at meeting, and
conferences
33. Mobile Device: Smart Phones
• It is an internet enabled phone that usually
also provided personal information
management functions such as a calendar,
an appointment book, an address book, a
calculator, and a notepad.
• It also allow you to send and receive email
massages, and access to the Web.
• Communicate wirelessly with other
devices.
• As a portable media player and build in
digital cameras.
34. Mobile Device: PDAs
• Personal digital assistant (PDA)
provides personal information
management functions such as a
calendar, an appointment book, an
address book, a calculator, and a
notepad.
• The primary input device of a PDA is a
stylus.
• Many PDAs are Internet-enabled so
that users can check email and access
the Web.
• Some also provide phone capabilities.
35. Mobile Device: E-book Reader
• Handheld device that is
used primarily for
reading e-books.
• Have a touch screen and
are Internet-enabled.
• Size smaller than tablet
computers but larger
than smart phone.
36. Mobile Device: Handheld Computer
• Sometimes referred to as a Ultra Mobile PC.
• Is a computer small enough to fit in one hand.
• Can communicate wirelessly with other devices or
computers and also include a digital pen/ stylus.
• For mobile employees:
– Meter reader and parcel delivery people, whose jobs
require them to move from place to place.
37. Mobile Device: Portable Media Player
• It is a mobile device on
which you can store,
organize, and play digital
media.
• For example:
– Listen to music
– Watch video, movie, and
television shows
– View photos
The iPod is a popular portable media player
38. Mobile Device: Digital Cameras
• It is a device that allows users to take pictures
and store the photographed images digitally,
instead of on traditional film.
39. Game Consoles
• It is a mobile computing device designed for single
player or multiplayer video games.
• Standard game consoles use a handheld controllers
as an input device; a television screen as an output
device; and hard disk, optical disk / memory for
storage.
• Small enough to fit in one hand, portable.
• Example:
– Sony’s PlayStation Portable (PSP)
– Nintendo Wii
40. Servers
• A server controls access to the hardware,
software, and other resources on a network
and provides a centralized storage area for
programs, data, and information.
• It can support several thousand connected
computer at the same time.
41. Mainframes
• A mainframe is a large,
expensive, powerful computer
that can handle hundreds or
thousands of connected users
simultaneously.
• It can store tremendous
amount of data, instructions,
and information.
42. Supercomputers
• A supercomputer is the fastest, most powerful computer.
• Fastest supercomputers are capable of processing more than one
quadrillion instructions in a single second.
• Applications requiring complex, sophisticated mathematical
calculations use supercomputers.
– Online banking
– Weather forecasting
– Nuclear energy research
43. Embedded Computers
• An embedded computer is a specialpurpose computer that functions as a
component in a larger product
Consumer
Electronics
• Mobile and
digital
telephones
• Digital
televisions
• Cameras
• Video
recorders
• DVD players
and recorders
• Answering
machines
•
•
•
•
•
Home
Automation
Devices
Thermostats
Sprinkling
systems
Security
monitoring
systems
Appliances
Lights
Automobiles
• Antilock
brakes
• Engine control
modules
• Airbag
controller
• Cruise control
Process
Controllers and
Robotics
• Remote
monitoring
systems
• Power
monitors
• Machine
controllers
• Medical
devices
Computer
Devices and
Office Machines
• Keyboards
• Printers
• Faxes
• Copiers
44. Computer Applications in
Business and Society
Education
Business
Students have notebook
computers on their desks
during classroom lectures
Business users use computers
to generate business reports,
do presentations, business
planning, etc.
45. Computer Applications in
Business and Society
Finance
Health
Care
Government
Users access account balances, pay
bills, & copy monthly transactions
from the bank’s computer right
into their PC.
Medical staffs use computers
& computerized devices to
assist with medical tests
Law enforcement officials
have in-vehicle computers
& mobile devices to access
emergency, criminal records
in computer networks
46. Computer Applications in
Business and Society
Science
Scientists use computers to assist
them with collecting, analyzing, &
Modeling data.
Publishing
Many magazine & newspaper
publisher make the content of their
Publications available online
Travel
GPS gives users prompted directions to a
destination
Manufacturing
Automobile factories use
Industrial robots to weld
car bodies
47. Summary
Data vs. Information
Information Processing Cycle
What’s computer?
Education, business,
healthcare, etc.
Computer
applications in
business & society
Personal Computer
Mobile computer & device
Game console
Categories of
Server
computers
Mainframe
Supercomputer
Embedded computer
Input devices
Output devices
System Unit
Communication devices
Storage devices
Components of a
computer
Advantages &
disadvantages of using
computer
Speed, reliable,
consistent, etc.
Health risks,
violation of
privacy, etc.
Editor's Notes
Define the term computer, and describe the relationship between data and information.Describe the five components of a computer.Discuss the advantages and disadvantages that users experience when working with computersDifferentiate among types, sizes, and functions of computers in each categoryDiscuss how society uses computers in education, finance, government,, health care, science, publishing, travel, and manufacturing
A computer is a programmable electronic device that accepts input; performs processing operations; outputs the results; and provides storage for data, programs, or output when needed. This progression of input, processing, output and storage is called the information processing cycle. Most computers today also have communications capabilities, such as sending or receiving data via the Internet, accessing information located in a shared company database or exchanging data or email with others. Therefore, communications – technically an input or output operation, depending on which direction the information is going – is often considered the fifth primary computer operation.