Science has
discovered many may wonders and computer is one of them.
Computer is
not invented over night. It took a long time and hard labour to invent
computer. First of all Pascal invented the theory of “Digital Calculating System” in
1642. Though his attempts were not crowned with success.He initiated the research
which paved the way the invention of computer. Finally Mr. Haward Akin,
an American scientist invented such a
machine in 1937 that could not
difficult sums. After seven years
electric computer was used in Harvard
University in 1944. Then many other
computers have been invented such as
EDSAC in 1945 and ENTACE in
1946 etc.
A computer consists of five major components.
They are the input unit, the out put unit, the memory unit, the control unit
and the artmatic unit.
Really a computer performs 3
functions:
1.
it receives data.
2.
it processes data by various computions.
3.
it emits data.
Now –a-days computer is of great use to us.It renders great service to mankind. It is like a magic lamp or
magic wand.It has lessened our work
loads and made our life easy and comportable. It is used in all spheres of our
life like education, medical science, agriculture, commerce, printing, industrial
sector etc.
Computer is a ource of great income. Many developed and advancced
countries export software, hardware and earn a lot.
There is no unmixed blessings on
earth. everything has its dark sides. Computer has its own demerits. It causes diseases such as Respitutibe Stress
injury and weakens the Eye
Sight of the operators.
Finally we must believe that we
can never a single moment without it. So it is a part and parcel of our
daily life.
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