![]() Early in the Industrial Revolution, some mechanical devices were built to automate long tedious tasks, such as guiding patterns for looms. Since ancient times, simple manual devices like the abacus aided people in doing calculations. The Internet is run on computers and it connects millions of other computers. This includes simple special purpose devices like microwave ovens and remote controls, factory devices such as industrial robots and computer assisted design, but also in general purpose devices like personal computers and mobile devices such as smartphones. Such computers are used as control systems for a very wide variety of industrial and consumer devices. ![]() The ability of computers to follow a sequence of operations, called a program, make computers very flexible and useful. ![]() A computer is a device that can be instructed to carry out an arbitrary set of arithmetic or logical operations automatically.
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