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- text/19/5
- You will see a big metal box with a
- fan on it. That's the power supply.
- It takes house current (110 volts,
- alternating) and changes it into 5
- and 12 volts direct current, to
- supply the needs of the computer's
- parts.
- ~
- text/19/68
- You will see the disk drives.
- You will also see some large
- printed circuit boards that plug
- into long sockets on an even bigger
- printed circuit board. The big one
- is on the bottom of a standard
- desktop case, and on one side of
- tower and mini-tower cases. It is
- called the motherboard. The boards
- that plug into it are called
- expansion cards.
-
- ~
- text/364/6
- The motherboard contains the
- most essential parts of a
- computer, the Central
- Processing Unit, called CPU,
- the RAM and ROM memory, and
- an assortment of other
- important parts. The
- expansion boards contain
- special circuits for
- "accessories" such as your
- monitor, disk drives, and
- options you might have such
- as a mouse or a modem.
-
- ~
- big2C/494/137/
- Let's look at the
- big2C/486/160/
- motherboard
- circle/559/165/3
- circle/559/170/3
-