Difference between revisions of "Program (machine)"

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Revision as of 06:54, 13 May 2015

A program is a list of instructions written in a programming language that is used to control the behavior of a machine

Computer programs control the behavior of computers.

Examples of programs include:

  • The sequence of cards used by a Jacquard loom to produce a given pattern within weaved cloth. Invented in 1801, it used holes in punched cards to represent sewing loom arm movements in order to generate decorative patterns automatically.
  • A file containing a list of instructions to be executed by a computer.
  • Barrels, punched cards and music rolls encoding music to be played by player pianos, fairground organs, barrel organs and music boxes.

The execution of a program is a series of actions following the instructions it contains. Each instruction produces effects that alter the state of the machine according to its predefined meaning.

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