4 Main Parts of a Computer System

4 Main Parts of a Computer System

1. HARDWARE

   • Input Devices
     • Keyboard
     • Mouse
     • Microphone
   • Output Devices
     • Monitor
     • Printer
     • Loudspeaker
   • Processing Componants
     • CPU
     • RAM
     • Clock
   • Backing Stores
     • Hard Disk

2. Application Software

   • Word Processor
     • MS Word
   • DTP
     • MS Publisher
   • Spreadsheet
     • MS Excel
   • Database
   • Computer Control
     • Sensing/Making decisions/Output of control signals
   • Data Logging
     • MSAccess
   • Art Package
     • Paintbrush

3. Operating Systems

   • 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
   • Windows 98
     • Used   on single computers
   • MS Dos
     • Now out of date but still used on most computers
   • Windows NT
     • Like Windows 98 but used on computer networks

4. Back Up Storage

   • DVD
     • 4700 mb 7 x more than CD
   • Tape Streamer
     • Used to back up hard drives
   • Floppy Disk/Zip Disk
     • small portable magnetic disk
   • CD Rom
     • Optical disk CD-r & CD-RW can be rewritten on 650mb
   • Hard Drive
     • 10000 mb - The C drive on computers a magnetic store