In 3600 BC China was the First Asian Country who developed a computing device and was Known as ABACUS.this Computing device is still use for mathematical calculations manually.after developement of computing device ABACUS, computing facilities was increased. The Computing device was used for simpleairthmatic calculation like addition and substraction.
Computer Machine ABACUS had numberof steel rods connected to frame and each rods has number of beads for counting purpose
After some times ago , japan was also developed a computing device its was Known as SORABAN physical construction of this device was similar to chinese computing device.computin device SORABAN has two extra facilities rather than ABACUS.it can solve multiplicationand division's problem including addition and substractions problem and now computing facilities were increased for human being.those computing devicewere usedfrom 3600BC to 1600AD. in the 17th century there were different scientistwere developeddifferent types of computingdevice for solve mathematicalproblem easily.only three scientist out of all get most important role for developement of computer.Balaise pascal Joerge bool and Charles Babbage were developed computing device or gave same principles for developement of computer

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