This document provides an overview of the computer system. It discusses what a computer is, data processing, applications of computers, and the importance and limitations of computers. It then describes the parts of a computer system, including hardware, software, users, data/information, procedures, and communication. The hardware components of a computer are also outlined.
A computer is an electronic device that can process and store data. It is made up of various hardware components, such as a central processing unit (CPU), memory, storage devices, input/output devices, and communication interfaces.
The CPU is the brain of the computer and performs most of the processing tasks. It retrieves data from memory, performs calculations, and executes instructions. Memory, also known as RAM (Random Access Memory), is used to store data and instructions temporarily while they are being processed by the CPU.
Title: The Transformative Power of Computer Usage in Today's World
Ladies and gentlemen,
In the rapidly evolving landscape of the 21st century, few phenomena have had as profound an impact as the widespread adoption and utilization of computers. From personal computing to artificial intelligence, from social networking to scientific research, computers have become ubiquitous tools that shape nearly every aspect of our lives. Today, I stand before you to explore the transformative power of computer usage in our modern world.
First and foremost, let us consider the realm of communication. Never before in human history have we been so interconnected, thanks to the advent of the internet and social media platforms. Computers serve as our gateways to the digital realm, facilitating instant communication with individuals across the globe. Whether it's through email, messaging apps, or video conferencing tools, computers have revolutionized the way we connect with one another, breaking down barriers of distance and time.
Moreover, the democratization of information is another hallmark of computer usage in today's world. The internet is a vast repository of knowledge, accessible to anyone with a computer and an internet connection. From educational resources to scholarly research, from news updates to DIY tutorials, the wealth of information available at our fingertips is staggering. Computers empower individuals to learn, explore, and discover at their own pace, fostering a culture of lifelong learning and intellectual curiosity.
In addition to communication and information access, computers have also revolutionized industries and economies around the world. The rise of e-commerce has transformed the way we shop, allowing consumers to browse and purchase goods and services online with unprecedented ease and convenience. From Amazon to Alibaba, from eBay to Etsy, online marketplaces have become virtual shopping malls where millions of transactions take place every day, transcending geographical boundaries and time zones.
Furthermore, the integration of computers into various sectors, such as healthcare, finance, and transportation, has led to increased efficiency, productivity, and innovation. In healthcare, electronic medical records and telemedicine platforms enable healthcare providers to deliver quality care to patients regardless of their location. In finance, algorithmic trading and blockchain technology have revolutionized the way we invest, trade, and manage financial assets. In transportation, autonomous vehicles and smart traffic systems promise to revolutionize urban mobility and reduce congestion on our roads.
However, amidst the myriad benefits of computer usage, it is essential to acknowledge the challenges and concerns that accompany this technological revolution. Cybersecurity threats, such as hacking, malware, and data breaches, pose significant risks to individuals, businesses, and governments alike. Privacy concerns regarding
A computer is an electronic device that can process and store data. It is made up of various hardware components, such as a central processing unit (CPU), memory, storage devices, input/output devices, and communication interfaces.
The CPU is the brain of the computer and performs most of the processing tasks. It retrieves data from memory, performs calculations, and executes instructions. Memory, also known as RAM (Random Access Memory), is used to store data and instructions temporarily while they are being processed by the CPU.
Title: The Transformative Power of Computer Usage in Today's World
Ladies and gentlemen,
In the rapidly evolving landscape of the 21st century, few phenomena have had as profound an impact as the widespread adoption and utilization of computers. From personal computing to artificial intelligence, from social networking to scientific research, computers have become ubiquitous tools that shape nearly every aspect of our lives. Today, I stand before you to explore the transformative power of computer usage in our modern world.
First and foremost, let us consider the realm of communication. Never before in human history have we been so interconnected, thanks to the advent of the internet and social media platforms. Computers serve as our gateways to the digital realm, facilitating instant communication with individuals across the globe. Whether it's through email, messaging apps, or video conferencing tools, computers have revolutionized the way we connect with one another, breaking down barriers of distance and time.
Moreover, the democratization of information is another hallmark of computer usage in today's world. The internet is a vast repository of knowledge, accessible to anyone with a computer and an internet connection. From educational resources to scholarly research, from news updates to DIY tutorials, the wealth of information available at our fingertips is staggering. Computers empower individuals to learn, explore, and discover at their own pace, fostering a culture of lifelong learning and intellectual curiosity.
In addition to communication and information access, computers have also revolutionized industries and economies around the world. The rise of e-commerce has transformed the way we shop, allowing consumers to browse and purchase goods and services online with unprecedented ease and convenience. From Amazon to Alibaba, from eBay to Etsy, online marketplaces have become virtual shopping malls where millions of transactions take place every day, transcending geographical boundaries and time zones.
Furthermore, the integration of computers into various sectors, such as healthcare, finance, and transportation, has led to increased efficiency, productivity, and innovation. In healthcare, electronic medical records and telemedicine platforms enable healthcare providers to deliver quality care to patients regardless of their location. In finance, algorithmic trading and blockchain technology have revolutionized the way we invest, trade, and manage financial assets. In transportation, autonomous vehicles and smart traffic systems promise to revolutionize urban mobility and reduce congestion on our roads.
However, amidst the myriad benefits of computer usage, it is essential to acknowledge the challenges and concerns that accompany this technological revolution. Cybersecurity threats, such as hacking, malware, and data breaches, pose significant risks to individuals, businesses, and governments alike. Privacy concerns regarding
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Sustainability has become an increasingly critical topic as the world recognizes the need to protect our planet and its resources for future generations. Sustainability means meeting our current needs without compromising the ability of future generations to meet theirs. It involves long-term planning and consideration of the consequences of our actions. The goal is to create strategies that ensure the long-term viability of People, Planet, and Profit.
Leading companies such as Nike, Toyota, and Siemens are prioritizing sustainable innovation in their business models, setting an example for others to follow. In this Sustainability training presentation, you will learn key concepts, principles, and practices of sustainability applicable across industries. This training aims to create awareness and educate employees, senior executives, consultants, and other key stakeholders, including investors, policymakers, and supply chain partners, on the importance and implementation of sustainability.
LEARNING OBJECTIVES
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1. Introduction and Key Concepts of Sustainability
2. Principles and Practices of Sustainability
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To download the complete presentation, visit: https://www.oeconsulting.com.sg/training-presentations
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4. In this lecture you will learn about:
Computer
Data Processing
Applications of Computers
Importance of Computers
Limitations of Computers
Parts of Computer System
Sunday, February 28, 2016 4CIT 1101 (ZH)
5. Computers are everywhere
5
Sunday, February 28, 2016 CIT 1101 (ZH) 5
6. A Computer is an electronic data processing
machine that stores, retrieves and
processes data. Finally generate
meaningful information with speed and
accuracy.
Computer is an electronic device that
process data according to a set of stored
instructions.
Sunday, February 28, 2016 6CIT 1101 (ZH)
8. Numbers
Images
Sound
Video
Input Process Output
12 + 8 = 20
000001100
000001000
---------------
000010100 20
0010000000000000000
0100000000000001001
0110000011000011011
0111111111111001111
1111111111111011111
1111111111100011111
000001000 000001001 000010100 …
volume Time
00101010111
11010101010
01010101010
11110100011
00101011011
8 9 0 5 …
00101010111
11010101010
01010101010
11110100011
00101011011
00101010111
11010101010
01010101010
11110100011
00101011011
00101010111
11010101010
01010101010
11110100011
00101011011
00101010111
11010101010
01010101010
11110100011
00101011011
Text This is a test 84 104 73 115 … This is a test
9. Data is the raw materials from which
information is generated.
Data consists of raw facts, numbers,
letters, or symbols that the computer
processed into meaningful information.
Data has no specific meaning.
Sunday, February 28, 2016 9CIT 1101 (ZH)
10. It’s a process that converts the data into
information.
A general term that stands for all logical,
arithmetic, and input/output operations
that can be performed on data by a
computer.
Sunday, February 28, 2016 10CIT 1101 (ZH)
11. Information refers to an organized ,
meaningful, & useful interpretation of data
Information is the result of processing,
manipulating and organizing data in a way
that adds to the knowledge of the receiver.
Sunday, February 28, 2016 11CIT 1101 (ZH)
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Sunday, February 28, 2016 CIT 1101 (ZH) 12
13. Data and information are stored/ maintained for
future use.
Any type of information - words, figures, still or
moving images, sound or music - can be stored
into storage devices (e.g. HDD, CD, DVD) and
that can be used at any time.
Hard Disk Drive
CD / DVD DriveFlash Drive
Sunday, February 28, 2016 CIT 1101 (ZH) 13
15. Data processing and Data storing
In Banking system : On line banking
Internet & Webpage :Information super highway
E mail
E commerce and M commerce
Airways and Railways Ticket Reservations
Medical science
In Education
Multimedia system
Production system
Communication: Mobile communication
Publishing (Books, Newspaper)
Offices
Data Analysis, Data Base Management
Job searching / CV sending
And More…
Sunday, February 28, 2016 15CIT 1101 (ZH)
16. High Speed: Computer can perform data
processing jobs very fast, usually measured in
microseconds (10-6), nanoseconds (10-9) and
picoseconds (10-12)
Automatic Operation: Computers are
automatic in operation. Once data and
program are fed to a computer, operation of
the computer is automatic.
Sunday, February 28, 2016 16CIT 1101 (ZH)
17. Accuracy: Accuracy of a computer is
consistently high and degree of its
accuracy depends upon its design.
Computer errors causes due to incorrect input
data or unreliable programs.
The system or process of showing the faulty
results of a computer is called Garbage-In-
Garbage-Out (GIGO)
Sunday, February 28, 2016 17CIT 1101 (ZH)
18. Diligence: Computer is free from monotony,
tiredness, and lack of concentration. It can
continuously work for hours without creating
any error and without grumbling
Versatility: Computer is capable of
performing almost any task, if the task can be
reduced to a finite series of logical steps
Sunday, February 28, 2016 18CIT 1101 (ZH)
19. Power of Remembering: Computer can
store and recall any amount of
information because of its secondary
storage capability. It forgets or looses
certain information only when it is asked
to do so
Sunday, February 28, 2016 19CIT 1101 (ZH)
20. Common data: One item of data can be
used for different computer operation.
Complexity: Computers perform complex
calculations. A computer provides the
required answers after running the
program for complex calculations.
Sunday, February 28, 2016 20CIT 1101 (ZH)
21. Computer cannot think (no I.Q).
Computer can not do anything without
human instructions.
Computers can not make any
adjustment as human being can do (no
feelings).
Sunday, February 28, 2016 21CIT 1101 (ZH)
23. Systems: A system is a collection of
elements or components that are organized
for a common purpose.
A computer system consists of hardware
components that have been carefully
chosen so that they work well together and
software components or programs that run
in the computer.
Sunday, February 28, 2016 23CIT 1101 (ZH)
25. The physical devices that make up the
computer are called Hardware.
The generic term device refers to any
piece of hardware.
Examples: CPU, memory, disks, CD-ROM
drives, printer, monitor etc.
Sunday, February 28, 2016 25CIT 1101 (ZH)
28. Step by step instructions that tells the
hardware how to perform a task.
The term program refers to any piece of
software.
Sunday, February 28, 2016 28
System Software
• Operating system – Win XP, Win 7, Win 10, LINUX
• Utility program – Antivirus, Partition magic, Screen Saver
Application Software
• Web browser, Word processors, Adobe Photoshop, Games etc.
CIT 1101 (ZH)
29. People are the Computer operators, also
known as users or Humanware.
The user is a person perhaps like yourself –
someone without much technical knowledge
of computers but who uses computers to
perform professional or personal tasks,
enhance learning, or have fun.
No computer is totally autonomous.
Sunday, February 28, 2016 29CIT 1101 (ZH)
30. Data is the raw materials from which
information is generated.
information is summarized data or
otherwise manipulated (processed) data.
Sunday, February 28, 2016 30CIT 1101 (ZH)
31. Procedures are descriptions of how
things are done, steps for accomplishing
a result.
Procedures for computer systems appear
in documentation manuals, which
contain instructions, rules and guidelines
to follow when using hardware and
software.
Sunday, February 28, 2016 31CIT 1101 (ZH)
32. When one computer system is set up to
share data and information electronically
with another computer system,
communications becomes a sixth system
element.
Examples: phone lines, microwave
transmission, satellite transmission, etc.
Sunday, February 28, 2016 32CIT 1101 (ZH)