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The computer which is one of the most advanced discoveries of making has got a long history. Around 3000 years before the birth of Jesus Christ, there were no any kind of number system. So people had to remember a lot of information. They felt the need to count the cattle. Then they started counting using their fingers. But the limited number of finger had made difficult for them to remember more facts. So they used stone for counting. As result around fifth century Hindu Philosopher could develop new methods of counting using numbers 1 to 9. In 8th century Alkhawarism of raq developed O. Since there are ten digits these number systems method was called decimal system.
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