Computer is
define as an electronic and mechanical device that can accepts data as input, processes
the data, with the help stored instructions (programmes) to produce information
(results) as output. The result to produced can be stored in the computer as softcopy or printed out as hardcopy. A computer basically reads
input in system unit socket called ports
which exist at the back side of the system unit or sometimes in front. In terms
of orientation, the system unit can be table
top type (base unit) and the monitor can be placed on top or tower type i.e. standing erect.
The system unit
casing can be divided into two, namely: AT and ATX. The AT (Advance Technology)
power supply is connected directly to the power button and so light comes into
it uncontrollably while the ATX (Advance Technology Extended) power supply unit
does not directly connect to the system power button, and so allows the
computer to be powered off or on via software, i.e. the system unit can only be
on or off by pressing the power button.
OR
Computer is an
electric machine or device used for processing data as input. It accepts data
and instructions from an impact unit and process it
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