User`s guide

18
Chapter 1 - The Big Picture
Inside a Desktop Computer
The mainboard is the large circuit board at the bottom of the chassis. It is
the heart of your system. All of the other components inside the case work
for the mainboard. The power supply delivers electricity to the
mainboard. The disk drives, keyboard connectors, and other parts of the
system unit bring information to and from the mainboard.
The figure above shows some of the most common components inside the
computer.
CPU
Hard Disk
Drive
Floppy Drives,
CD-ROM Drives,
and Tape Backup
Units
Mainboard
Expansion Slots
Power Supply
Front of
Computer