Answer these following question. a)What is abacus? ~ Abacus is the first mechanical computing devices developed by the Chinese between 500 to 600 B.C.E. b) Writen the period of evolution of computer. ~The period of evolution of computer are: 1 Period of developing mechanical computing devices. 2 Period of developing electro mechanical computers. 3 Period of developing electronic computer. c)Who invented slide rule and when? ~William Oughtred slide rule in 1620 AD . d) what is pascaline and when was it invented? ~ Pascaline is a devices which contains eight dials, gears and toothed metal wheels which can add and subtract by the movement of wheel. It was invented in 1642 A.D. . e) Who is known as the 'father of the modern computer and why? ~ Charles Babbage is known as the father of modern computer because he invented a machine named analytical engine which consist five functional units ( Input unit, Output units ,Memory unit, Arithemetics unit , and control unit) w...
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