4 Main Parts of a Computer System

1. Input Devices
   1. Keyboard
   2. Mouse
   3. Microphone
2. Output Devices
   1. Monitor
   2. Printer
   3. Loudspeaker
3. Processing Componants
   1. CPU
   2. RAM
   3. Clock
4. Backing Stores
   1. Hard Disk

1. Word Processor
   1. MS Word
2. DTP
   1. MS Publisher
3. Spreadsheet
   1. MS Excel
4. Database
5. Computer Control
   1. Sensing/Making decisions/Output of control signals
6. Data Logging
   1. MSAccess
7. Art Package
   1. Paintbrush

Nota:

• 4 Main Functions: To allow the app s/w to communicate with the hardware To manage the transfer of data to and from peripherals To manage the computer system To manage system security

1. Windows 98

   Nota:

   • Used   on single computers
2. MS Dos

   Nota:

   • Now out of date but still used on most computers
3. Windows NT

   Nota:

   • Like Windows 98 but used on computer networks

1. DVD

   Nota:

   • 4700 mb 7 x more than CD
2. Tape Streamer

   Nota:

   • Used to back up hard drives
3. Floppy Disk/Zip Disk

   Nota:

   • small portable magnetic disk
4. CD Rom

   Nota:

   • Optical disk CD-r & CD-RW can be rewritten on 650mb
5. Hard Drive

   Nota:

   • 10000 mb - The C drive on computers a magnetic store