Dharmesh Valani
What is computer
A computer is a digital electronic machine that can be programmed to carry out sequence of arithmetic or logical operations (computation) automatically. Modern computers can perform generic sets of operations known as programs. These programs enable computers to perform a wide range of tasks. A computer system is a "complete" computer that includes the hardware, operating system (main software), and peripheral equipment needed and used for "full" operation. This term may also refer to a group of computers that are linked and function together, such as a computer network or computer cluster. Computers and computing devices from different eras. Top row: Automatic mechanical calculator (1820) (Difference Engine), First-generation computer (Colossus computer) middle row: Early vacuum tube computer (E), Supercomputer (IBM Summit) bottom row: Video ...
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