From the
era of civilization men have been expressing their feelings. When man could not
express their feelings by language like today, their life did not stop. They
express their mind affect by different kind of
symbol and body languages. Bit
day by day men are developing their skill. They are not only developing their
skill but also developing their language and life style. By keeping this virtue,
we have developed our civilization so high.
The History of Computer
Today if
we open book we can know many things. Today the era of internet the range of
our knowledge is so wide. But we could not change our history. Like our
forefather we also have learn the way of developing our every task. Two
centuries ago we would live in dark. In front of us a great man Tomas Alva
Edison has brought out the light. He invented Electricity, the most necessary
thing of our daily life. After inventing it our science have gone way out of
reach. And epoch making invention has been being invented. In this succession Marconi
invented radio. Then TV, cell phone, satellite TV etc were invented. But these
inventions were made based on the technology of radio. But the biggest and the
most successful invention of human is Computer. But the concept of this
invention is older than TV even radio. Charles Babbage thought about making and
usage of such kind of machine which can calculate the mathematical term
mechanically that means without any kind of intelligence. Though he could not
see the practical application of his concept. The real Computer science has
been started by the theoretical and then practical research of Alan Turing. In
modern technology untiring labor, inventing power and researching sign is
behind the contribution of computer.
In per-historic era
invented many kind of efforts for calculating can be called history of
computer. In yore man used oyster, shingle, knot of rope for calculating
number. In subsequent though various kinds of technique and machine were used
for calculation but Abacus (An ancient calculating machine) is called the first
computer of history. That means the journey of computer started from Abacus.
Abacus is calculating machine changing the position of dices which are arranged
in a frame. In the year 400/500 BD Abacus was made as a calculating machine in
Egypt/China. In 1616 Scottish mathematician John Napier used a marking line
stick. These sticks are known as ‘Bone of John Napier’.
At first
in 1642, 19 years old French scientist Blase Pascal invented a mechanical
calculator. He started the technique of summation by gear. In 1671 German
mathematician Gottfried Von Leibniz made a more developed mechanical calculator
based on Pascal machine with the facilities of multiplication and division. The
machine was called ‘Rechoning Machine’. Though the machine was theoretically
good but it had not been popular for its mechanical disadvantages. Then in 1820
Thomas de Comer made popular the Libanj machine solving the disadvantages of Reckoning
Machine. Then in 1823, Charles Babbage Professor of mathematics, Cambridge
University, England invented a subtraction based calculating machine or ‘Difference
Engine’.
The word
computer came from the Greek word ‘compute’. Compute means counting money or
calculating. And computer means calculating Machine. But now a day’s Computer
cannot be said only the calculating machine. Computer is such kind of machine
which takes information, analyze and present them in many ways.
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