Vector Graphic Vector 4 - Page 92

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Command
Processing
Storage
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Command Processing
Storage
FIGURB 1 - SlMILARll'IBS BETWBBN
PHONB SYSTBM AND COMPUTER
SYSTEM
This diagram shows how much using a
computer system is like using a telephone.
Both systems take commands from
keyboards; both systems transfer
information
to a location entered from the
keyboard; both systems process
that
information in some way and store the
results of that processing. (Of course,
you don't have to write a check every
time
you use a floppy disk.)
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