Meaning of Computer
A Computer is on electronic machine. Which takes and stores
the data (unit) from user and process that data to give meaningful result
(output).
C Common
O
Oriented
M Machine
P
Particularly
U Used
for
T Trade
E Education and
R
Research.
List
the above definition of computer we have used three Main terms :-
1 DATA (INPUT)
2 PROCESS
3 RESULT (OUTPUT)
1 DATA :- DATA
means all unorganized raw facts and figures which are provided by the user to
the computer. It is also known as “INPUT”.
Example
:- list of Marks, Names, Number etc.
2 PROCESS :- PROCESS
means work on data to get some meaningful result or Information.
Process include any Work like,
addition, subtraction etc. Through Processing Computer Converts or raw data
into Information or result.
3
RESULT :- After Processing Computer provide us some meaningful and
useful information. Which is known as “RESULT”. It is also known as “OUTPUT”.
Characteristics of Computer :-
Computer are capable of performing highly complex task,
which human being can’t perform efficiently. Such as store huge amount of data
and information ability to communicate with other computer etc. The Following
are Main characteristics of computer :-
1 Speed :- Computer can perform large amount
work in a few second that a human being can do in an entire day. It saves the
effort and time of human beings. It unit of speed are measured in the terms of
milliseconds (103 second), microsecond (10-6 second), nanosecond (10-9 second).
2 Accuracy :- Computer
performs its task with great accuracy. Computer never commit mistake in
processing the data, computers result is based only on the input data. Which is
provided by the user if the provided data in correct, computer gives correct
answer and functions accurately.
3 Versatility :-
Computer
can perform various types of job which high accuracy. Which is otherwise
difficult for human being to do so. For example :- On a computer system, we can
listen songs while typing document in MS Word or while working on any other
package, we can play games, do calculation make drawing, surf the net, sent
E-mail etc.
4 Reliability :- Computer are more reliable then
human being as they never get bored by doing by doing repetiting to never get
tired.
5 Storage Capacity :- Computer have large
storage capacity. It can store a huge amount of data in its memorise recall or
retrieve the stored data whenever you need it. Computer occupies very storing
huge data.
Limitation of Computer :-
Every think has Two Aspects. One is good and other is bad.
Beside So many characteristics or advantages computer also have limitation or
weakness.
1 Dump Machine :-
Computer
is a Dump machine. It has no Intelligent or not able to make any decision
itself. It can work on the instructions which are given by user. It cannot take
any decision and cannot make any judgment itself.
2 No Learning Power Or Experiences :- Computer cannot learn from past
experience but man learn from past experience so, computer repeats its error
again and again.
3 No Emotion and Feeling :-
Human
being often take decision based on emotions and feelings but computers are for
away from emotions and feelings.
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