A computerized program is one that executes automatically, as opposed to one that is operated by hand.. Thus, computers have a long history of being used to perform calculations that could be performed manually with great effort or tedium, such as performing the calculations of solving differential equations.
The term computer is usually used in two senses: in the narrower sense of "a calculating machine or device", the general term computing machine is used.
. A computer may also be called a processor, a calculator, an abacus, or a machine. The implementation of a general-purpose computer is often called a computer architecture.
. The terms computer, microcomputer, microprocessor, microcontroller, and embedded system are used synonymously. The term computer program is used synonymously with computer program,.
Computer or computing. The computer is a general term for devices which can be programmed to perform calculations and tasks. The term was coined in 1940 by the American engineer Vannevar Bush in a report for the U. S. Office of Scientific Research and Development, and it was coined in the late 1950s, probably by Kenneth B.
Holcombe (1956), it can be seen as a precursor of the personal computer. The IBM 701, introduced in 1958, was the first true computer. The 701's circuitry was literally divided into discrete components in order to build a high-density, low-cost, "brain" for computing. The first version of the 701 had only seven such discrete components, a memory register.
The first successful commercial microcomputer was the LISP machine, developed by John McCarthy and built by Steve Russell at MIT Lincoln Lab in 1958.
It was the first computer to have a CPU design that was widely accepted, and influenced both the development of other processors, and the design of computers, computer peripherals, and operating systems for the following years. The IBM 1130, introduced in 1960, was the first microprocessor. IBM then became a leader in the computer industry. In 1964, the IBM System/360, the first mainframe computer, and the first one widely accepted, was introduced.
At the time, IBM was the world's largest maker of mainframe computers. In 1965, DEC PDP-11, introduced in 1964, was the first minicomputer. This was the first design that used transistors, and thus was by far the smallest personal computer, weighing only 17 lbs. Also in 1965, mini-com be359ba680
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