
Computer interfacing
Computer
A
Έ
Modem
Parallel Data ·
Long line
-Serial Data-
Computer
B
E
Modem
Figure
1.5
Two computers communicating
via
Modems.
A
conversion from parallel
to
serial form and vice versa
is
needed
at both ends
of the
line
must be selected to be the same for both ends of the
system, although it doesn't have to be the same in both
directions. A more detailed discussion of the principles
of modems follows in a later chapter.
Core task
In any computer system the computer is the central core.
It should be evident by now that the computer consists
solely of the MPU, memory, input/output chips and some
additional logic. All of thi ...