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the year is 100B.C~500B.C
The abacus also called a counting frame, is a calculating tool used primarily in parts of Asia for performing arithmetic processes -
he lived in France.he was mathematics, philosopher.He invented operation calculator used the toothed wheel
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He lived in Germany.He was philosopher, mathematics.
He solved math challenges to learn,improve -
He lived in London,England .He was inventor and mathematics. Chales Babbage is credited with inventing the modern computer.
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She lived in London.she was splendid mathematics.
She is the programmer and she is founder of scientific calculation. -
He lived in USA.He was engineer and scientist.
He made IBM -
a vacuum tube, electron tube is a device controlling electric current through a vacuum in a sealed container.
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He lived England.he was engineer.
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He lived in England. He was engineer.
He made automactic digital machine. -
An integrated circuit or monolithic integrated circuit is an electronic circuit manufactured by lithography, or the patterned diffusion of trace elements into the surface of a thin substrate of semiconductor material.
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A transistor is a semiconductor device used to amplify and switch electronic signals and electrical power. It is composed of semiconductor material with at least three terminals for connection to an external circuit.
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he lives in USA.
He is Engineer and programmer -
He lives in USA.
he is businessman.
he made windows -
The computers were designed by using microprocessor, as thousands of integrated circuits were built onto a single silicon chip.
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That development led to a scare for IBM, the original developer of the PC, as the world migrated to PCs and networks, diminishing the role of mainframes.
