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Collection of Education
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1992-06-21
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I.C.s can do many things. Some are
R.O.M. chips. These are Read Only
Memory. Memory of this sort is
like a newspaper. You can read it
as often as you like, but you
can't change the news.
Others are R.A.M. chips. RAM
stands for Random Access Memory.
These chips can be told something
and will remember it. If you tell
them something different, they will
then remember the new information.
They only work when the power is on.
If you turn the computer off, the
RAM chips forget everything.
Other chips are decision-makers.
Their individual thinking power is
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limited, but they team up to control
the operation of your computer.
There is one special I.C. chip
called the C.P.U., which stands for
Central Processing Unit. It is often
the largest bug in the box, with the
most legs. Almost every bit of
information the computer handles
is controlled by this chip. Intel
is the most famous manufacturer of
CPUs for IBM-compatible computers.
In PC-class machines the Intel CPU
model number is 8088. In XT com-
puters it is 8088-2. In AT-class
machines it is 80286, in '386'
computers it is number 80386 and in
'486s'... you guessed it. (80486)
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