We all know about computer but the first calculating device was ABACUS. It was first used by Chinese. Then Difference Engine was made by Charles Babbage in 1821, to prepare mathematical tables. It had many similarities with the modern computers. Then MARK I was made. It was the first automatic digital computer. It was made in 1944. Then ENIAC was made. It was the first general – purpose computer. It used vacuum tubes. It was very large in size. Then UNIVAC – I was made in 1951. It was faster than the previous computers. Then Modern computers are made in 1982. They are called personal computers or PCs. These computers are faster than the earlier ones and are also cheaper and smaller in size.
Thanking You
Siddesh Pandey
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