IBM Personal Computer: IBM developed PC “personal Computer” in 1981. A personal computer is small in size and can be used anywhere and by anyone.
Definition of Computer System: Now, you would hardly find an area of modern living that is not yet touched by the computer. If it has become indispensable for critical areas of information technology, telecommunication, defense preparedness, medical and space research, it is equally adept at handling with lightning speed mundane tasks like railway booking, electricity billing and online shopping.
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