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1993-11-24
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te27 37 DEFAULT
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.
~
te320 37 DEFAULT
Other chips are decision-
makers. Their individual thinking
power is 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)
~