A computer is a programmable machine ,which is designed to carry out some operations. At first computer was just an enormous machine which could only calculate . Nobody knows who built the first computer. This is because the word "computer" used to mean a person who did math as their job (a human computer). Because of this, some people say that humans were the first computers. Human computers got bored doing the same math over and over again, and made tools (mostly mechanical calculating devices like abacuses) to help them get the answers to their problems. It is said that the inventor of the 'modern' computer was Charles Babbage. But nowadays it begets more and more functions. It has become so important to us that most of us can’t even imagine their lives without them. Most modern computers can be used to play music or video. The basic principle is still the same though: the computer has a set of rules, usually called an algorithm. The computer changes information based on these rules.
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