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This document provides definitions and descriptions of various computer components. It discusses different types of cards like video cards, network cards, sound cards, and RAM cards. It also describes data storage devices and readers such as USB flash drives, DVD recorders, and CD-ROMs. Additionally, it covers disks and disk drives like hard disk drives and floppy disks. The document concludes with definitions of tape drives and punched tape as well as keyboards.
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Parts of System unit
The document defines and describes various computer components and ports. It explains what the monitor system unit, CD ROM/DVD drive, floppy disk drive, USB port, headset/speaker jack, microphone jack, power outlet, exhausted fan, expansion slot, LAN port, VGA port, LINE IN/OUT, PS/2 mouse and keyboard slot, parallel port, and serial port are. It also provides details on CD ROM, DVD drive, USB port, floppy disk, PCI slot, VGA port, DVI port, PS/2 port, parallel port, and serial port. Lastly, it compares PS/2 vs USB and CD ROM vs DVD ROM.
Parts of the System Unit
The motherboard connects all the computer's parts together and is essential to the system. The hard drive stores digital data and files on the computer. The power supply provides power to the computer and allows it to function. Key components also include the graphics card for display output, RAM for temporary storage, ports to connect peripherals, and the processor to process data in the system. Cables like the power cable are also important to send power throughout the computer.
computer hardware
A typical personal computer consists of the following main hardware components:
1. A monitor or display to show images and data.
2. A motherboard that acts as the central component connecting the other parts.
3. A central processing unit (CPU) that executes computer programs and processes data.
4. Random-access memory (RAM) for temporary data storage.
Computer Hardware System
An input device provides data and control signals to a computer system. Examples include keyboards, mice, scanners, and joysticks. A scanner digitizes printed text or images into a format the computer can use. A joystick reports the direction an attached stick is pivoted. Data is processed by the computer processor and then output through output devices like monitors, printers, or speakers. Common storage devices include magnetic hard drives and optical discs which can permanently or temporarily store data using magnetic or optical encoding.
Hard Disk Drive
The hard drive is the computer's main storage device that permanently stores all data. It uses rapidly rotating disks coated with magnetic material to store and retrieve digital information electromagnetically. A hard drive consists of stacked disks with data recorded in concentric circles, read and written by heads on each side of the disks as they spin. Hard drive performance is measured by data rate and seek time. Common interfaces include ATA, SATA, and SCSI.
Motherboard2
The motherboard is the main circuit board inside a computer that connects the central processing unit (CPU), memory, storage, and peripherals. It contains components like the CPU, memory, BIOS, and connectors for expansion cards and external ports. The motherboard works with the power supply to provide power to these internal components and with removable media devices, secondary storage, sound cards, and other peripherals for input/output functions.
System unit components
The document discusses the key components of a computer system. A hard drive stores data and files, with larger drives having more storage capacity. The heat sink prevents overheating by dissipating heat, while the power supply provides power to run the computer. The motherboard connects all the parts together including the CPU, memory, ports, and expansion cards.
Harddisk
Hard disks are magnetic storage devices that store data permanently on spinning platters coated with magnetic material. They were introduced by IBM in 1956 and became the dominant storage method for computers in the 1960s. Hard disks store data in concentric tracks on platters that spin rapidly, with read/write heads able to access different tracks. Key components include platters, read/write heads, and electronics to control movement of the heads to access data stored on the platters. Common interface types are IDE, SATA, and SCSI. Hard disks use SMART technology to monitor health and predict failures.
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Parts of System unit
The document defines and describes various computer components and ports. It explains what the monitor system unit, CD ROM/DVD drive, floppy disk drive, USB port, headset/speaker jack, microphone jack, power outlet, exhausted fan, expansion slot, LAN port, VGA port, LINE IN/OUT, PS/2 mouse and keyboard slot, parallel port, and serial port are. It also provides details on CD ROM, DVD drive, USB port, floppy disk, PCI slot, VGA port, DVI port, PS/2 port, parallel port, and serial port. Lastly, it compares PS/2 vs USB and CD ROM vs DVD ROM.
Parts of the System Unit
The motherboard connects all the computer's parts together and is essential to the system. The hard drive stores digital data and files on the computer. The power supply provides power to the computer and allows it to function. Key components also include the graphics card for display output, RAM for temporary storage, ports to connect peripherals, and the processor to process data in the system. Cables like the power cable are also important to send power throughout the computer.
computer hardware
A typical personal computer consists of the following main hardware components:
1. A monitor or display to show images and data.
2. A motherboard that acts as the central component connecting the other parts.
3. A central processing unit (CPU) that executes computer programs and processes data.
4. Random-access memory (RAM) for temporary data storage.
Computer Hardware System
An input device provides data and control signals to a computer system. Examples include keyboards, mice, scanners, and joysticks. A scanner digitizes printed text or images into a format the computer can use. A joystick reports the direction an attached stick is pivoted. Data is processed by the computer processor and then output through output devices like monitors, printers, or speakers. Common storage devices include magnetic hard drives and optical discs which can permanently or temporarily store data using magnetic or optical encoding.
Hard Disk Drive
The hard drive is the computer's main storage device that permanently stores all data. It uses rapidly rotating disks coated with magnetic material to store and retrieve digital information electromagnetically. A hard drive consists of stacked disks with data recorded in concentric circles, read and written by heads on each side of the disks as they spin. Hard drive performance is measured by data rate and seek time. Common interfaces include ATA, SATA, and SCSI.
Motherboard2
The motherboard is the main circuit board inside a computer that connects the central processing unit (CPU), memory, storage, and peripherals. It contains components like the CPU, memory, BIOS, and connectors for expansion cards and external ports. The motherboard works with the power supply to provide power to these internal components and with removable media devices, secondary storage, sound cards, and other peripherals for input/output functions.
System unit components
The document discusses the key components of a computer system. A hard drive stores data and files, with larger drives having more storage capacity. The heat sink prevents overheating by dissipating heat, while the power supply provides power to run the computer. The motherboard connects all the parts together including the CPU, memory, ports, and expansion cards.
Harddisk
Hard disks are magnetic storage devices that store data permanently on spinning platters coated with magnetic material. They were introduced by IBM in 1956 and became the dominant storage method for computers in the 1960s. Hard disks store data in concentric tracks on platters that spin rapidly, with read/write heads able to access different tracks. Key components include platters, read/write heads, and electronics to control movement of the heads to access data stored on the platters. Common interface types are IDE, SATA, and SCSI. Hard disks use SMART technology to monitor health and predict failures.
How hard drive works ?
The document summarizes how a hard disk drive works. It describes the key components of a hard drive, which include platters, read/write heads, an actuator arm, and a spindle. The platters are coated with magnetic material and spun by the spindle to store data. The read/write heads located on the actuator arm can both write data to the platters by magnetizing them, and read data by detecting the magnetized areas. Data is written serially as binary digits and stored permanently on the platters even when the computer is powered off.
Categories of computer hardware
This document discusses different types of computer hardware. It describes input devices like keyboards and mice that allow data to enter the computer. Output devices like monitors and printers allow users to see processed data. Storage devices like hard drives, flash drives, and optical discs allow data and files to be saved. The document outlines different categories of storage devices and their purposes in a computer system.
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Parts of computer
The document discusses various components of a computer system. It describes a monitor for displaying visual information through a screen. It explains that a modem is used to connect a computer to the Internet over telephone lines or cable, and that modems can be built into the system unit or separate. It provides details on storage devices like hard disk drives, CD/DVD drives, and floppy disk drives for holding programs and files of varying sizes. The document also outlines input devices such as a mouse, speakers, and printer and their basic functions.
Parts of the system unit
The system case holds and protects the computer's internal components from external elements. The motherboard connects and supports crucial parts like the CPU, memory, and input/output ports. The power supply converts electrical energy and powers the computer. A heat sink dissipates heat from electronic devices to prevent overheating. A graphics/video card generates and sends output images to displays. Common ports include USB ports for connecting external devices. The processor processes and handles data. The network card enables data transfer between the computer and network. The hard disk drive stores and provides quick access to large amounts of data. Optical drives like CD/DVD drives read and write data to discs using lasers. RAM is temporary memory that stores and supplies data fast
System unit components
The hard drive stores data and files on the computer. It connects to the motherboard and uses motors and an actuator to read and write data. The heat sink is a cooling device installed to prevent overheating. It is important for air conditioning units and computers. The power supply provides the main power for the computer to run. If it is cut, the computer will shut off and unsaved work will be lost. The graphics card generates images for display. It connects to the motherboard and display via different ports and standards like VGA or HDMI. RAM is temporary storage that loads programs from the hard drive into memory for the CPU to use. Ports interface the computer with other devices using connections like USB.
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RAM is a form of computer memory that allows for fast reading and writing of data. RAM stores instructions and data currently being used by the operating system and applications. Flash memory retains data even when power is removed, and includes technologies like USB flash drives and SD cards. Various optical media like CDs and DVDs can only be read by computers, while hard disks and flash drives allow for both reading and writing of data. Input devices like keyboards and mice allow users to control computers, while output devices like printers and plotters produce hard copies of documents and graphics.
Computer Hardware
The document introduces basic computer hardware components. It defines the processor as the brain of the computer and lists common types. It explains that RAM is used for temporary storage and comes in static or dynamic forms. It describes the operating system as the most important program that controls the computer and allows other programs to function. It defines the hard drive as the component where permanent storage of files and data occurs on spinning disks coated with magnetic material.
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The document discusses the key components of a computer hardware system. It describes the system unit, which contains the motherboard, CPU, memory, and disk drives. Input devices like keyboards and mice are used to feed data to the computer. Output devices like monitors display processed information. Storage devices like hard drives and disks allow for permanent storage of programs and data. The vital components of the system unit are then outlined, including the power switch, drives, ports, motherboard, power supply, and hard drive.
Floppy disk
The floppy disk drive was invented in 1967 by Alan Shugart at IBM, originally using 8-inch disks. By the 1980s, improved designs led to the ubiquitous 3.5-inch, 1.44MB floppy disk drive. Floppy disks stored information in concentric tracks and sectors on magnetic media, allowing direct access unlike tapes. Though replaced by optical discs, floppy disks remained useful for software recovery and transferring data without networks.
P1 Computer systems
The document summarizes several key internal computer components:
The power supply decreases 240 volts to 12 volts to power the motherboard and other internal components. The motherboard connects all the internal components and where external components like USB ports connect. The CPU processes instructions from the operating system to perform basic computations and needs cooling from a heat sink or liquid cooling. The hard drive stores data, software, operating systems and personal files, and can use spinning disks or solid state flash memory.
Secondary memory
The document discusses different types of computer memory including primary memory like RAM and ROM, and secondary memory like magnetic disks, magnetic drums, CD-ROMs, and hard disks. It defines a hard disk drive as using rapidly rotating disks coated with magnetic material to store and retrieve digital data in a random-access manner. The document also covers optical discs which encode data in the form of pits and lands on a circular disc, and defines common units of data storage like kilobytes, megabytes, and terabytes in terms of bytes.
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The document summarizes the main parts of a computer system. The system unit houses the central processing unit and random access memory. Other parts connect to the system unit via cables, including storage devices like hard disk drives, CD/DVD drives, and sometimes floppy disk drives. Input devices include a mouse, keyboard, and monitor. Output devices can be printers and speakers. A modem is needed to connect the computer to the internet.
Fict
1) The document discusses various types of external devices used with computers including input devices like keyboards and mice, and output devices like monitors, printers, and storage devices.
2) It describes different types of monitors, keyboards, mice, printers, and storage devices such as hard drives, CDs/DVDs, and USB drives.
3) External devices can serve as primary storage for servers, secondary storage for backup and archiving, or transport data between on-site and off-site systems through cloud seeding using external storage devices.
Itc lec 16 computer system components
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2. Memory addresses
3. Storage Capacity
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Hard disk_
Hard disks are used for long-term storage of data in computers. They use magnetic platters coated with magnetic material and read/write heads to store and retrieve data. Common interfaces for connecting hard disks to computers include IDE, EIDE, SCSI, and Serial ATA. Capacities range from megabytes to terabytes. Hard disk specifications like RPM, cache size, and interface type affect performance. Popular hard disk brands include Western Digital and Seagate.
Input devices
This document discusses different types of input and output devices used with computers. It describes keyboards, mice, touch screens, scanners, microphones, and other pointing devices as common input methods. Output devices mentioned include computer monitors in CRT, LCD, and LED varieties, printers, speakers, magnetic storage like hard drives and floppy disks, optical discs, flash memory, and online/cloud storage. The document provides examples and brief explanations of these various computer peripherals and storage technologies.
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This document discusses different types of computer hardware. It describes input devices like keyboards and mice that allow data to enter the computer. Output devices like monitors and printers allow users to see processed data. Storage devices like hard drives, flash drives, and optical discs allow data and files to be saved. The document outlines different categories of storage devices and their purposes in a computer system.
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The document discusses various components of a computer system. It describes a monitor for displaying visual information through a screen. It explains that a modem is used to connect a computer to the Internet over telephone lines or cable, and that modems can be built into the system unit or separate. It provides details on storage devices like hard disk drives, CD/DVD drives, and floppy disk drives for holding programs and files of varying sizes. The document also outlines input devices such as a mouse, speakers, and printer and their basic functions.
Parts of the system unit
The system case holds and protects the computer's internal components from external elements. The motherboard connects and supports crucial parts like the CPU, memory, and input/output ports. The power supply converts electrical energy and powers the computer. A heat sink dissipates heat from electronic devices to prevent overheating. A graphics/video card generates and sends output images to displays. Common ports include USB ports for connecting external devices. The processor processes and handles data. The network card enables data transfer between the computer and network. The hard disk drive stores and provides quick access to large amounts of data. Optical drives like CD/DVD drives read and write data to discs using lasers. RAM is temporary memory that stores and supplies data fast
System unit components
The hard drive stores data and files on the computer. It connects to the motherboard and uses motors and an actuator to read and write data. The heat sink is a cooling device installed to prevent overheating. It is important for air conditioning units and computers. The power supply provides the main power for the computer to run. If it is cut, the computer will shut off and unsaved work will be lost. The graphics card generates images for display. It connects to the motherboard and display via different ports and standards like VGA or HDMI. RAM is temporary storage that loads programs from the hard drive into memory for the CPU to use. Ports interface the computer with other devices using connections like USB.
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RAM is a form of computer memory that allows for fast reading and writing of data. RAM stores instructions and data currently being used by the operating system and applications. Flash memory retains data even when power is removed, and includes technologies like USB flash drives and SD cards. Various optical media like CDs and DVDs can only be read by computers, while hard disks and flash drives allow for both reading and writing of data. Input devices like keyboards and mice allow users to control computers, while output devices like printers and plotters produce hard copies of documents and graphics.
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The document introduces basic computer hardware components. It defines the processor as the brain of the computer and lists common types. It explains that RAM is used for temporary storage and comes in static or dynamic forms. It describes the operating system as the most important program that controls the computer and allows other programs to function. It defines the hard drive as the component where permanent storage of files and data occurs on spinning disks coated with magnetic material.
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The document discusses the key components of a computer hardware system. It describes the system unit, which contains the motherboard, CPU, memory, and disk drives. Input devices like keyboards and mice are used to feed data to the computer. Output devices like monitors display processed information. Storage devices like hard drives and disks allow for permanent storage of programs and data. The vital components of the system unit are then outlined, including the power switch, drives, ports, motherboard, power supply, and hard drive.
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The floppy disk drive was invented in 1967 by Alan Shugart at IBM, originally using 8-inch disks. By the 1980s, improved designs led to the ubiquitous 3.5-inch, 1.44MB floppy disk drive. Floppy disks stored information in concentric tracks and sectors on magnetic media, allowing direct access unlike tapes. Though replaced by optical discs, floppy disks remained useful for software recovery and transferring data without networks.
P1 Computer systems
The document summarizes several key internal computer components:
The power supply decreases 240 volts to 12 volts to power the motherboard and other internal components. The motherboard connects all the internal components and where external components like USB ports connect. The CPU processes instructions from the operating system to perform basic computations and needs cooling from a heat sink or liquid cooling. The hard drive stores data, software, operating systems and personal files, and can use spinning disks or solid state flash memory.
Secondary memory
The document discusses different types of computer memory including primary memory like RAM and ROM, and secondary memory like magnetic disks, magnetic drums, CD-ROMs, and hard disks. It defines a hard disk drive as using rapidly rotating disks coated with magnetic material to store and retrieve digital data in a random-access manner. The document also covers optical discs which encode data in the form of pits and lands on a circular disc, and defines common units of data storage like kilobytes, megabytes, and terabytes in terms of bytes.
Building a Personal Computer: A detailed guide
A detailed guide for choosing the correct computer hardware to build a home PC and the proper way of assembling it.
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This document defines and describes the major internal and external hardware components of a computer system. It discusses the internal components including the motherboard, processor, RAM, hard disk drive, CD-ROM drive, power supply, graphics card, solid state drive, and fan. It also discusses the external components, which include the monitor, keyboard, mouse, computer casing, and printer. For each component, it provides a brief explanation of its function within the computer system.
Parts of the computer
The document summarizes the main parts of a computer system. The system unit houses the central processing unit and random access memory. Other parts connect to the system unit via cables, including storage devices like hard disk drives, CD/DVD drives, and sometimes floppy disk drives. Input devices include a mouse, keyboard, and monitor. Output devices can be printers and speakers. A modem is needed to connect the computer to the internet.
Fict
1) The document discusses various types of external devices used with computers including input devices like keyboards and mice, and output devices like monitors, printers, and storage devices.
2) It describes different types of monitors, keyboards, mice, printers, and storage devices such as hard drives, CDs/DVDs, and USB drives.
3) External devices can serve as primary storage for servers, secondary storage for backup and archiving, or transport data between on-site and off-site systems through cloud seeding using external storage devices.
Itc lec 16 computer system components
1. Computer System Components
2. Memory addresses
3. Storage Capacity
4. PRIMARY MEMORY: RAM AND ROM
5. Secondary Storage Devices
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Hard disks are used for long-term storage of data in computers. They use magnetic platters coated with magnetic material and read/write heads to store and retrieve data. Common interfaces for connecting hard disks to computers include IDE, EIDE, SCSI, and Serial ATA. Capacities range from megabytes to terabytes. Hard disk specifications like RPM, cache size, and interface type affect performance. Popular hard disk brands include Western Digital and Seagate.
Input devices
This document discusses different types of input and output devices used with computers. It describes keyboards, mice, touch screens, scanners, microphones, and other pointing devices as common input methods. Output devices mentioned include computer monitors in CRT, LCD, and LED varieties, printers, speakers, magnetic storage like hard drives and floppy disks, optical discs, flash memory, and online/cloud storage. The document provides examples and brief explanations of these various computer peripherals and storage technologies.
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The document defines a computer and describes its basic components and functions. It states that a computer is an electronic device that processes data according to programmed instructions. It then explains the main functions of a computer as input, output, processing, and storage of data. The document proceeds to describe common input devices like keyboards, mice, and scanners. It also details processing devices such as CPUs and storage devices including hard drives, CDs, and memory sticks. Output devices such as monitors, printers, and headphones are also outlined. The document concludes by defining types of computers and networks, transmission media, and major internal computer parts.
computer peripheral & hardware maintenance micro project (22013).pdf
The document is a proposal for a micro-project to study the parts of a CPU. It includes an introduction describing computers and the aim of the project. It then outlines the intended learning outcomes, literature review, proposed methodology, resources required, action plan with timeline, and list of group members. The proposal is submitted to the Maharashtra State Board of Technical Education for the academic year 2021-2022.
Ingles blog
The document defines and describes various computer and networking terms in both English and Spanish. It provides definitions for terms such as antivirus, application, bandwidth, backup, Bluetooth, byte, broadband, inbox, blog, chat, computer, cookie, copyright, CPU, coaxial cable, character string, folder, CD-ROM, password, fiber optic cable, structured wiring, webcam, controller, mail, hard disk drive, link, scanner, firewall, hardware, printer, RAM memory, ROM memory, microphone, modem, node, display, motherboard, speaker, web, mouse, router, software, operating system, motherboard, topology, keyboard and more.
Ingles sena
This document provides definitions and descriptions of common computer hardware components. It explains that the monitor displays visual output from the computer, the motherboard connects and integrates all internal components, and the processor is the central component that processes information. It also describes expansion cards, RAM memory, PCI cards, power supplies, CD-ROM drives, floppy disk drives, keyboards, mice, and other internal computer parts and how they function within a desktop PC system.
Ingles sena
This document provides definitions and descriptions of common computer hardware components. It explains that the monitor displays visual output from the computer, the motherboard connects and integrates all internal components, and the processor is the central component that processes information. It also describes expansion cards, RAM memory, PCI cards, power supplies, CD-ROM drives, floppy disk drives, keyboards, mice, and other internal computer parts and how they function within a desktop PC system.
Informáticam
Hard disks are circular magnetic storage devices that store information. They typically spin at 3,600 RPM and have read/write heads that move within 10-25 millionths of an inch across the disk surface. IDE and SATA are common interfaces that connect hard disks to computers. IDE supports up to four devices across two channels while SATA provides faster speeds and hot-swapping. SCSI interfaces provide more consistent transfer speeds independent of the CPU compared to IDE, making them suitable for multimedia or CAD work. Optical disks like CDs and DVDs store information using lasers to read information encoded in pits on the disk surface. Rewritable disks like CD-RWs and DVD-RWs allow erasing and rewriting
Ingles sena b
The monitor displays visual output from the computer. It allows users to interact with the computer by viewing images and text. The motherboard connects and integrates all the computer's components. It contains basic startup software called BIOS. The processor processes all information and performs computations. RAM temporarily stores running programs and data but loses it when powered off. Peripheral devices like keyboards, mice, printers connect to ports on expansion cards that connect to the motherboard. Power supplies provide electrical current to power the computer components and include a cooling fan. Optical drives like CD-ROMs use lasers to store and read digital data. Floppy disk drives store small amounts of data on removable floppy disks.
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Diap. infor.
- 1. REPÚBLICA BOLIVARIANA DE VENEZUELA MINISTERIO DEL PODER POPULAR PARA LA EDUCACIÓN SUPERIOR INSTITUTO UNIVERSITARIO DE TECNOLOGÍA ``ANTONIO JOSÉ DE SUCRE`` ESCUELA DE INFORMÁTICA MATERIA: INGLES I THE COMPUTER JHOSUE TORRES CI: 25.151.953 APRIL, 2013
- 2. Índex Introduction………………………………………………………...............1 Card and tipe card………………………………………………………2-5 Data storage device and readers……………………………………6-8 Disks and Disk Drives……………………………………………………9 Tape and tapes drive…………………………………………………9-10 Keyboards………………………………………………………………….11
- 3. INTRODUCTION THIS WORK REALIZE LEARN MORE ABOUT FORM OF CARD, TYPES OF CARD, MEMORY CARD, VIDEO CARD, SOUND CARD AND RAM TAJETA MOTHER. DEVICES WILL ALSO SEE LITERACY AND DATA STORAGE. MOREOVER DISCS ARE THE DISK DRIVES, SUCH AS HARD DISK, AND TAPE CINTS AS THE FLOPPY DRIVE AND PUNCHED TAPE
- 4. VIDEO CARD A VIDEO CARD (ALSO CALLED A VIDEO ADAPTER, DISPLAY CARD, GRAPHICS CARD, GRAPHICS BOARD, DISPLAY ADAPTER OR GRAPHICS ADAPTER) IS ANEXPANSION CARD WHICH GENERATES A FEED OF OUTPUT IMAGES TO A DISPLAY. MOST VIDEO CARDS OFFER VARIOUS FUNCTIONS SUCH AS ACCELERATED RENDERING OF 3DSCENES AND 2D GRAPHICS, MPEG-2/MPEG-4 DECODING, TV OUTPUT, OR THE ABILITY TO CONNECT MULTIPLE MONITORS (MULTI-MONITOR).
- 5. NETWORK INTERFACE CONTROLLER OR NETWORK CARD: A NETWORK INTERFACE CONTROLLER (NIC) (ALSO KNOWN AS A NETWORK INTERFACE CARD, NETWORK ADAPTER, LAN ADAPTER AND BY SIMILAR TERMS) IS A COMPUTER HARDWARE COMPONENT THAT CONNECTS A COMPUTER TO A COMPUTER NETWORK.
- 6. SOUND CARD A SOUND CARD (ALSO KNOWN AS AN AUDIO CARD) IS AN INTERNAL COMPUTER EXPANSION CARD THAT FACILITATES THE INPUT AND OUTPUT OF AUDIO SIGNALS TO AND FROM A COMPUTER UNDER CONTROL OF COMPUTER PROGRAMS.
- 7. MOTHERBOARD A MOTHERBOARD (SOMETIMES ALTERNATIVELY KNOWN AS THE MAINBOARD, SYSTEM BOARD, PLANAR BOARD OR LOGIC BOARD, OR COLLOQUIALLY, A MOBO) IS THE MAIN PRINTED CIRCUIT BOARD (PCB) FOUND IN COMPUTERS AND OTHER TECHNOLOGICAL SYSTEMS.
- 8. RANDOM-ACCESS MEMORY RANDOM-ACCESS MEMORY (RAM) IS A FORM OF COMPUTER DATA STORAGE. A RANDOM- ACCESS DEVICE ALLOWS STORED DATA TO BE ACCESSED DIRECTLY IN ANY RANDOM ORDER.
- 9. DATA STORAGE DEVICE A DATA STORAGE DEVICE IS A DEVICE FOR RECORDING (STORING) INFORMATION (D ATA). RECORDING CAN BE DONE USING VIRTUALLY ANY FORM OF ENERGY, SPANNING FROM MANUAL MUSCLE POWER IN HANDWRITING, TO ACOUSTIC VIBRATIONS IN PHONOGRAPHIC RECORDING, TO ELECTROMAGNETIC ENERGY MODULATING MAGNETIC TAPE AND OPTICAL DISCS.
- 10. READERS USB FLASH DRIVE A USB FLASH DRIVE IS A DATA STORAGE DEVICE THAT INCLUDES FLASH MEMORY WITH AN INTEGRATED UNIVERSAL SERIAL BUS (USB) INTERFACE. USB FLASH DRIVES ARE TYPICALLY REMOVABLE AND REWRITABLE, AND PHYSICALLY MUCH SMALLER THAN A FLOPPY DISK. MOST WEIGH LESS THAN 30 GRAMS (1.1 OZ). AS OF SEPTEMBER 2011, DRIVES OF UP TO 256 GIGABYTES (GB) ARE AVAILABLE.
- 11. DVD RECORDER A DVD RECORDER (ALSO KNOWN AS A DVDR, MAINLY OUTSIDE OF THE UK AND IRELAND), IS AN OPTICAL DISC RECORDER THAT USESOPTICAL DISC RECORDING TECHNOLOGIES TO DIGITALLY RECORD ANALOG SIGNAL OR DIGITAL SIGNALS ONTO BLANK WRITABLE DVD MEDIA. SUCH DEVICES ARE AVAILABLE AS EITHER INSTALLABLE DRIVES FOR COMPUTERS OR AS STANDALONE COMPONENTS FOR USE IN TELEVISION STUDIOS OR HOME THEATER SYSTEMS.
- 12. CD ROM IS A PRE-PRESSED COMPACT DISC WHICH CONTAINS DATA. THE NAME IS AN ACRONYM WHICH STANDS FOR "COMPACT DISCREAD-ONLY MEMORY". COMPUTERS CAN READ CD-ROMS, BUT CANNOT WRITE ON THEM.
- 13. DISKS AND DISK DRIVES HARD DISK DRIVE IS A DATA STORAGE DEVICE USED FOR STORING AND RETRIEVING DIGITAL INFORMATION USING RAPIDLY ROTATING DISCS (PLATTERS) COATED WITH MAGNETIC MATERIAL. AN HDD RETAINS ITS DATA EVEN WHEN POWERED OFF. DATA IS READ IN A RANDOM- ACCESS MANNER, MEANING INDIVIDUAL BLOCKS OF DATA CAN BE STORED OR RETRIEVED IN ANY ORDER RATHER THAN JUST SEQUENTIALLY.
- 14. TAPE AND TAPES DRIVE A FLOPPY DISK, OR DISKETTE, IS A DISK STORAGE MEDIUM COMPOSED OF A DISK OF THIN AND FLEXIBLE MAGNETIC STORAGE MEDIUM, SEALED IN A RECTANGULAR PLASTIC CARRIER LINED WITH FABRIC THAT REMOVES DUST PARTICLES. THEY ARE READ AND WRITTEN BY A FLOPPY DISK DRIVE (FDD).
- 15. PUNCHED TAPE PUNCHED TAPE OR PERFORATED PAPER TAPE IS A FORM OF DATA STORAGE, CONSISTING OF A LONG STRIP OF PAPER IN WHICH HOLES ARE PUNCHED TO STORE DATA.
- 16. KEYBOARD IN COMPUTING, A KEYBOARD IS A TYPEWRITER-STYLE DEVICE, WHICH USES AN ARRANGEMENT OF BUTTONS OR KEYS, TO ACT AS MECHANICAL LEVERS OR ELECTRONIC SWITCHES. FOLLOWING THE DECLINE OF PUNCH CARDS AND PAPER TAPE, INTERACTION VIA TELEPRINTER-STYLE KEYBOARDS BECAME THE MAIN INPUT DEVICE FOR COMPUTERS