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10/20/2009 Computer Components ( How do they work?)

posted Oct 16, 2009, 5:52 AM by Abdulkader Alriyashi   [ updated Dec 1, 2009, 6:25 AM ]

Units we must understand ( in computers )

  • Kilo     means one thousand
  • Mega  means one  million
  • Giga   means one  billion 
    • So when I say Giga byte (GB), that means one billion bytes
    • And when I say Giga Hertz (Ghz), that means one billion Hertz.
    • Can you tell what Mega byte means?













  1. Input Devices
    1. The keyboard 
    2. The Mouse
  2. System Unit ( Processing)   
    1. The processor ~  The speed unit is Hertz (Hz)
    2. Memory - RAM ( Random Access Memory) 
  3. Output Devices
    1. Printers
      1. Ink-jet printers
      2. Laser printers
      3. Dot-matrix printers
    2. Display Devices
      1. LCD screen 
      2. CRT screen
  4. Storage Devices  ~ The storage unit is Byte
    1. Hard Disk (HD)
    2. Flash Memory Cards and USB Flash Drive
    3. Optical Disks  (CDs and DVDs)
    4. Tape
    5. Floppy Disk

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