Data storage
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This document defines common computer hardware and storage terms like bit, byte, booting, electronic storage, interfaces, laser, magnetic platters, memory modules, magnetic storage media, optical storage media, hard disk drives, integrated drive electronics, and file size and binary. It provides examples of converting between decimal and binary numbers. It also gives practice problems for calculating storage capacity and how many files can be stored.
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The document defines a computer as an electronic device that stores and processes data according to programmed instructions. It then describes the basic functions of a computer as input, output, processing, and storage of data. Various input devices like keyboards, mice, microphones, and touch screens are listed. Processing devices include the CPU, motherboard, hard disk, and power supply. Storage devices include floppy disks, CDs, microdrives, and smart media. Output devices include printers, headphones, sound cards, and plotters. Different types of computers like PCs, laptops, netbooks, PDAs, workstations, servers, and mainframes are outlined. The document also discusses computer networks, transmission media like cables and
The Computer
The document defines a computer as an electronic device that stores and processes data according to programmed instructions. It then describes the basic functions of a computer as input, output, processing, and storage of data. Various input devices like keyboards, mice, microphones, and touch screens are listed. Processing devices include the CPU, motherboard, hard disk, and power supply. Storage devices include floppy disks, CDs, microdrives, and smart media. Output devices include printers, headphones, sound cards, and plotters. Different types of computers like PCs, laptops, netbooks, PDAs, workstations, servers, and mainframes are outlined. The document also discusses computer networks, transmission media like cables and
Corresponding parts of computer and their functions
The document provides information on different types of computers and their components. It discusses the key characteristics and uses of analog computers, digital computers, and hybrid computers. It also describes different categories of computers like mainframe computers, servers, supercomputers, microcomputers, desktops, laptops, netbooks, PDAs, tablets, and wearable computers. The rest of the document details the major internal and external components of a computer system including the CPU, memory, storage devices, ports, buses, input/output devices, displays, and printers.
Ap Power Point Chpt1
The document provides an overview of key concepts related to computer systems, including:
- Hardware components like the CPU, memory, storage devices, and input/output devices and how they interact.
- How digital information is represented and stored using binary numbers.
- Different types of memory like RAM, ROM, and their characteristics.
- Storage media like hard disks, CDs, DVDs and their storage capacities.
- Basic concepts of networks, local area networks, and wide area networks.
- How the Internet developed from ARPANET and became a global network connecting many networks worldwide.
CT01 Computer Basics
This document provides an overview of computer basics, including:
- Hardware refers to the physical components of a computer like the case, monitor, keyboard. Software refers to programs and instructions that make the hardware work.
- The CPU (central processing unit) is the brain of the computer and contains the arithmetic/logic and control units. RAM (random access memory) is short-term memory the computer uses to run programs.
- The basic process of how a computer works involves inputting data, the CPU processing it using programs stored in memory, and producing an output. Proper care and ergonomics are important for health and safety.
Ch02
This document provides an overview of key concepts in information systems, including databases, data storage methods, information integration challenges, business intelligence, and how organizations use IT to support business activities. It describes the core components of IT infrastructure including hardware, software, networks and how they work together. It also discusses databases, data organization, data storage and sharing methods, and how IS supports business transactions and processes.
Hwswb
The document provides an overview of basic hardware and software concepts, including:
1) It describes digital and analog devices, and gives examples of each. Digital devices use discrete data while analog operates on continuously varying data.
2) The main components of a computer are described as the central processing unit (CPU), memory, storage devices, input devices, and output devices. Examples of each type of device are provided.
3) Different types of computer platforms, operating systems, and issues of compatibility across platforms are discussed. Understanding which platform a computer uses is important for purchasing software.
Network
The document provides an overview of basic hardware and software concepts, including:
1) It describes digital and analog devices, and gives examples of each.
2) It lists and explains common computer hardware components like the CPU, memory, storage devices, input devices, and output devices.
3) It discusses different types of storage technology, operating systems, and computer platforms.
4) It introduces basic network concepts like LANs, WANs, servers, and protocols.
Hardware
The document provides an overview of hardware and software basics, describing key components of computers including digital and analog devices, computer hardware such as the CPU and memory, storage technologies, input and output devices, networks, operating systems, application software, programming languages, and instructional support technologies. It compares and contrasts different types of hardware and software and discusses tradeoffs between options like speed versus cost and capacity versus cost.
Hardware and Software Basics With Dr. Poirot
The document provides an overview of hardware and software basics, describing key components of computers including digital and analog devices, computer hardware such as the CPU and memory, storage technologies, input and output devices, networks, operating systems, application software, programming languages, and instructional support technologies. It compares and contrasts different types of hardware and software and discusses tradeoffs between options like speed vs cost and capacity vs cost.
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Corresponding parts of computer and their functions
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Troubleshooting vocab
The document defines several technical computing terms: defragmentation is the process of reorganizing fragmented computer file data to improve performance; data deterioration refers to damage from external forces; phishing is fraudulently obtaining personal information online or by phone; backup refers to copying data for restoration after loss; troubleshooter is someone who solves technical problems; antivirus software scans for and removes viruses; formatting prepares a disk partition for an operating system; malware can create, move, delete files and slow a computer; a patch is a minor software update that fixes bugs; piracy is the illegal copying or distribution of software; malware is software installed without permission.
GPU
1) A GPU is a computer chip that performs rapid mathematical calculations primarily for rendering images, allowing graphics processing to be offloaded from the CPU.
2) Graphics cards have their own memory and processing capabilities, making them almost independent from the CPU. They output video through ports like DVI, VGA, and HDMI.
3) Computer monitors display the images generated by the graphics card. Resolution and aspect ratio can vary between monitors. DVI connections are preferred over VGA as they transmit digital signals without conversion.
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PowerPoint 2010 introduces new features to help users author, enrich, and deliver presentations. It provides sample templates for starting presentations, allows organizing slides into sections, and enables real-time collaboration through simultaneous editing. Users can stylize images with new effects, animate content using the Animation Painter, and embed and customize videos. PowerPoint 2010 also allows broadcasting slideshows, recording narrated presentations as videos, and optimizing presentations for compatibility and compact file sizes when sharing.
Chapter04 system unit
This chapter discusses the components inside a computer's system unit. It describes the motherboard and processor, including the control unit and arithmetic logic unit. Memory stores instructions and data and comes in volatile RAM and nonvolatile ROM varieties. Expansion slots hold adapter cards to add functions. Ports and connectors attach peripherals. Buses allow components to communicate. The power supply provides power and requires cooling.
Chapter01discovering computers2012
This chapter provides an introduction to basic computer concepts. It defines what a computer is and describes the five main components: input devices, output devices, the system unit, storage devices, and communication devices. It discusses advantages and disadvantages of computer use, networks and the Internet, different types of computer software, various categories of computers and computer users, and applications of computers in many areas of society including education, finance, government, and healthcare.
Mod4 l2.2
The document defines basic electrical terms like electricity, electrons, protons, current, voltage, resistance, conductors, and insulators. It explains that electricity is the flow of electrons and can be transformed into other forms of energy. It defines current as the flow of electrons and voltage as the pulling force making electrons flow. Resistance opposes current flow while conductors allow current flow and insulators do not. The document also discusses the differences between direct and alternating current and defines the components of an electrical circuit including the load, supply, and switch.
Mod4 l2.1
The document provides guidelines for personal safety when working with computers. It advises listening to teacher instructions to prevent accidents, not working on computers when wet to avoid electrocution, and not removing internal devices when the computer is turned on. It also recommends avoiding playing or running in the room, wearing protective equipment like coveralls and anti-static wrist straps, asking teachers for assistance when dealing with computer devices, and applying safety measures when handling tools to prevent damages.
Lo1.1 safety precautions
This document discusses preparing for computer diagnosis by using protective devices such as anti-static devices and power surge protectors. Anti-static devices that can be used include wrist straps connected to an anti-static mat to prevent static electricity from damaging computer components. Power surge protectors help protect computers from electrical surges that can also cause component malfunction.
Troubleshoot beeping computers
Beep codes from computers provide troubleshooting information about startup issues. A single beep indicates a normal startup. Multiple short beeps, like two or three, usually relate to memory problems. Five beeps point to issues with the motherboard or CPU, while beeps like six or seven mean problems with the CPU or motherboard chips. The number of beeps corresponds to specific components that may need repair or replacement.
Lo1.2 types of computer system error
This document discusses common types of computer system errors, including:
1. No video output errors where nothing displays on the monitor or the monitor flashes or stays orange.
2. Boot errors where the computer turns on but doesn't continue past displaying the processor or motherboard brand.
3. The operating system takes a long time to load or gets stuck in an endless loading screen.
4. Various types of errors are discussed that can cause problems like random restarts, no sound, or safe mode not working properly. The causes can range from hardware or software issues to corrupted files.
Ergonomics
This document discusses ergonomic considerations for computer workstations. It highlights that workstation setup should account for work surface height, chair placement, keyboard and screen positioning, desk layout, document holder placement, posture, lighting, glare reduction, mouse usage, typing posture, keying technique and duration, recommended viewing distance of 2 to 2.5 feet from the screen, encouraging breaks from screen time to be physically active, seat height ensuring arms are at 90 degrees, using a footrest to support dangling feet, selecting a mouse sized for smaller hands, and recommending child-sized keyboards with light key pressure.
Network cable
Straight through cables have identical ends and are used to connect devices to switches or routers. Crossover cables have different ends and connect devices directly to each other without a switch. Category 5e cables support speeds up to 1 Gbps and are the most commonly used type, while CAT6 and higher support even faster speeds but are less prevalent.
Functions and formulas
This document discusses formulas and functions in Excel. It defines formulas as mathematical expressions that perform calculations using values, cell references, and operators. Functions are predefined Excel formulas that can quickly perform common tasks like summing or averaging ranges of cells. Examples of commonly used functions include SUM, AVERAGE, MAX, MIN, and COUNT. The document also distinguishes between contiguous and non-contiguous cell ranges and identifies common symbols used in formulas like exponents, parentheses, multiplication, and more.
2.4
The document provides step-by-step instructions for installing the Windows XP operating system. It describes inserting the Windows XP CD-ROM, going through the initial MS-DOS setup screens, selecting installation options such as disk partitioning and file system, entering registration information like the product key, and completing the installation process which includes setting up user accounts. Upon finishing, the user is prompted to log into Windows XP for the first time.
2.3
This document provides step-by-step instructions for installing computer hardware components and peripherals. It begins with the disassembly process, explaining how to safely remove parts like the power supply, hard drive, memory and motherboard. It then describes the assembly process, covering preparation, installing the CPU, heat sink, memory and motherboard. Other steps include connecting the power supply, installing graphics/video cards, internal drives and add-in cards. The document concludes with connecting peripherals like the monitor, keyboard, mouse and network cable.
Uses of powerpoints
PowerPoint is a presentation software that can be used by anyone to create slideshow presentations for various purposes. It allows users to design slides with text, images, videos and other media to share and present information on a computer or other display. PowerPoint presentations can be created and delivered in many contexts like business meetings, classrooms, conferences and other events where visual aids help convey key messages or lessons.
2.2
The document discusses the system requirements and specifications for installing equipment at Nueva Ecija High School. It covers the required operating system, processor speed and architecture, RAM, graphics card, hard disk space and input/output ports. It also discusses factors that determine processor and graphics system performance like cache size, front side bus speed and integrated versus separate graphics cards. Hard disk performance depends on rotational speed and interface type. Understanding system specifications is important for computer hardware servicing to identify compatibility and performance issues during installation.
2.1
This document discusses safety precautions for installing equipment and systems. It describes the importance of using personal protective equipment like goggles, rubber-soled shoes, aprons, face masks, and gloves to protect against electrical, chemical, and other hazards. Static electricity is explained as the discharge of electricity between objects with different electrical potentials, and it takes less voltage to damage computer components than for a human to feel a static shock. Key anti-static safety rules are outlined, such as using a wrist strap while working on computers and handling components by the non-conductive edges.
5 s
This document discusses the 5S methodology for organizing and standardizing the workplace. It provides descriptions and translations for each of the 5S principles:
1. SEIRI (Sort): Remove unnecessary items and properly dispose of them. Prevent accumulation of unnecessary items.
2. SEITON (Systematic Arrangement): Arrange necessary items so they are easily accessible. Make the workflow smooth and efficient.
3. SEISOU (Shine): Clean the workplace completely as part of regular inspections. Keep the workplace safe and prevent deterioration.
4. SEIKETSU (Standardize): Maintain high standards of organization at all times. Keep everything in its proper place according to standard processes.
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Data storage
- 1. TLE_ICTCS7/8MC-0f-2 COMPUTERHARDWARESERVICING|EXPLORATORY NUEVA ECIJAHIGH SCHOOL INFORMATION & COMMUNICATIONSTECHNOLOGY TECHNOLOGY &LIVELIHOOD EDUCATION
- 3. Bit - a fundamental unit of information having just two possible values, as either of the binary digits 0 or 1. Byte - a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Booting – starting (a computer) by loading an operating system from a disk. Electronic storage - a device for recording (storing) information (data).
- 4. Firewire - Apple Computer's version of a standard, IEEE 1394, High Performance SerialBus, for connecting devices to your personal computer. Hot-swappable - the connection/disconnection of peripherals or other components without interrupting system operation. Interface - interaction or communication between a computer and any other entity, such as a printer or human operator.
- 5. Laser - a device that emits light (electromagnetic radiation) through a process of optical amplification based on the stimulated emission of photons. Magnetic platter - a thin, high precision disk that is coated on both sides with a high precision magnetic material and which is used in a hard disk drive (HDD) to store data. Memory module - a narrow printed circuit board that holds memory chips.
- 6. Magnetic storage media - any storage medium in which different patterns of magnetization are used to represent stored bits or bytes of information. Operating system - a set of programs that manage computer hardware resources and provide common services for application software. Optical storage media - any storage in which data is written and read with a laser for archival
- 7. HDD – hard disk drive IDE - Integrated Drive Electronics
- 8. CAPACITY=number of bytes a storage medium can hold.
- 9. FILE SIZE BINARY
- 10. DIRECTION:CONVERT THE DECIMAL NUMBERS TO BINARY. 1. 9 = 2. 28 = 3. 86 =
- 11. DIRECTION:CONVERT THE BINARY TO DECIMAL NUMBERS 1. 01100011 2. 11111111 3. 01010101
- 12. SOLVE THE PROBLEM INDICATED BELOW. SHOW A SOLUTION 1. How many 80KB jpg files can be stored on a 2MB folder in your hard drive? 2. How many 7MB mp3 files can be stored on a 1GB flash drive? 3. How many 750MB avi files can be stored on a 4.3GB DVDV-R?
Editor's Notes
- 9 = 1001 28 = 11100 86 = 1010110