Chapter 1 Introduction to a Typical PC 17
Power supply
Optical drive
(CD/DVD)
Hard drive
Expansion slots Battery
CPU DIMM
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Figure 1-22.
These components
are common to the
PC. Depending on the
style of the unit (tower,
desktop, or laptop),
the arrangement of the
parts will vary. This
sketch shows a tower
PC.
A
C
B
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Figure 1-23.
The CPU is the brain of
the computer.
A—Empty CPU socket
on a motherboard.
B—CPU is inserted
into the socket.
C—Heat sink is
mounted on the CPU to
keep it cool.