106
10)
to be termed.
An input/output unit is collectively termed I/O.
11)
to insert, to remove.
An input/output unit inserts data into a machine
and removes data from it.
12)
hardware
. The visible units are physical components of a data process-
ing system, or hardware.
13)
to house the motherboard.
The case or chassis houses the motherboard.
14)
systems software, application software
. Software programmes are of two
types: system software and application software.
15)
indispensable, irreplaceable.
Computers have become indispensable
and irreplaceable in many spheres of our life.
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