What is a CPU?

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The full form of CPU is Central Processing Unit. computational and control unit of a computer. The CPU interprets and executes instructions. Mainframes and early minicomputers contained circuit boards full of integrated circuits that implemented the CPU. Single-chip central processing units, called microprocessors, made possible the development of personal computers and workstations. The CPU or microprocessor, in the case of a microcomputer, has the ability to The CPU is the fetch, decode, and execute instructions and to transfer information to and from other resources over the computer's main data-transfer path, the bus. In other words, the brain of a computer is the CPU.

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When were the First Mechanical Clocks Made?

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The first mechanical clocks are believed to have been made in China in 1088 AD. Later in 1200s, they were first made in Europe. Such clocks made in Europe were driven by a weight on the end of a cord wound round a drum. As the drum rotated, it turned the hands of the clock. The earliest known clock was made in Spain in 1276 AD and the oldest mechanical clock that still works is in Salisbury cathedral in Britain. It was made in 1368. These clocks had devices called escapements to keep the hands turning at the correct rate, so that the clocks depicted the correct time.
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How do Aircrafts Fly?

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