Computerhardware 100506233230-phpapp02

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  • Data The words, numbers, figures, sounds, and graphics that describe people, events, things, and ideas
  • Computerhardware 100506233230-phpapp02

    1. 1. COMPUTERHARDWARE
    2. 2. Then and NowENIAC (The Electronic Numerical Integrator And Calculator)1946-2-14 Made In USA
    3. 3. Then and Now1982 - ABC 80Made in SwedenNow – Macbook ProMade in China
    4. 4. What is a computer? An electronic machine that canbe programmed to accept data(input), and process it intouseful information (output).Data is put in secondarystorage (storage) forsafekeeping or later use.
    5. 5. Computer Systems Hardware All the Physical parts of a Computer System (thebits that you can see and touch) Software Software is a collection of programs that help thecomputer hardware to work properly
    6. 6. Computer workCentral Processing UnitOutputInput MemoryStorageDataDataDataData
    7. 7. Input Devices Keyboard Touch-SensitiveScreen Mouse Microphone Digital Camera Digital Video Camera Joystick ScannerThe Physical Parts of a Computer SystemThe Physical Parts of a Computer Systemwhich allows data to be entered into awhich allows data to be entered into aComputer SystemComputer System
    8. 8. keyboard Used to inputtextual informationto the computer.
    9. 9. mouse Lets you feedinstructions to thecomputer by simplypointing andclicking in agraphicalenvironment.
    10. 10. Scanner A scanner is a devicethat can read text orillustrations printedon paper andtranslate theinformation into aform the computercan use.
    11. 11. Output Devices An output device is a devicewhich allows data to bedisplayed or passed out of acomputer system Printers Monitor Load speaker Projector
    12. 12. Monitor Screen that displayswhat is going on inthe computer.
    13. 13. Printera printer is aperipheral whichproduces a hard copyof documents stored inelectronic form, usuallyon physical print mediasuch as paper ortransparencies.
    14. 14. HeadphoneUsed todeliver thesounds.
    15. 15. Memory Devices RAM
    16. 16. Random-Access Memory Allows computers tostore and retaininformationStores part of operating systemStores part of the application programsStores your files as you work on them
    17. 17. Storage Devices We require backingstorage to storeprograms and files Without backingstorage all our datawould be lost when weturn the computer offBacking Storage MediaHard DiskFloppy DiskCD-ROMDVD-ROMUSB Stick
    18. 18. Primary Storage – Hard disk Size inGigabytes Magnetictechnology Fast accessA hard disk is a memory used mainly in computers.
    19. 19. Secondary Storage - CD/DVD *-R - recordableburn once *-RW - rewritableerase and burnagain 650 MB for a CD 4.7 GB for a DVD 8.5 GB for DualLayer DVDs In-expensive
    20. 20. Flash memory – USB stickFlash memory is anon-volatile computermemory that can beelectrically erased andreprogrammed.
    21. 21. The Processor The processor orCentral Processing Unitis the brain of thecomputer The performance of theprocessor is measuredin Giga Hertz (GHz) We send programs tothe processor to get thecomputer to dosomething
    22. 22. Thank you! We are computer hardware asimple introduction We hope you have some Harvest

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