Program (machine)
A program is a set of instructions used to control the behavior of a machine. Examples of such 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 computer program (software) is 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.
- A music sequencer is a programmable musical instrument. It was the earliest type of programmable machine. The first music sequencer was an automated flute player invented by the Persian Banu Musa brothers, described in their Book of Ingenious Devices, in the 9th century.[1][2] In 1206, the Arab inventor Al-Jazari (in the Turkish Artuqid Sultnate) invented programmable automata, which incorporated the first programmable drum machine.[3]
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.
While some machines are called programmable, for example a programmable thermostat or a musical synthesizer, they are in fact just devices which allow their users to select among a fixed set of a variety of options, rather than being controlled by programs written in a language (be it textual, visual or otherwise).
References
- ^ Koetsier, Teun (2001), "On the prehistory of programmable machines: musical automata, looms, calculators", Mechanism and Machine Theory, 36 (5), Elsevier: 589–603, doi:10.1016/S0094-114X(01)00005-2.
- ^ Kapur, Ajay; Carnegie, Dale; Murphy, Jim; Long, Jason (2017). "Loudspeakers Optional: A history of non-loudspeaker-based electroacoustic music". Organised Sound. 22 (2). Cambridge University Press: 195–205. doi:10.1017/S1355771817000103. ISSN 1355-7718.
- ^ Professor Noel Sharkey, A 13th Century Programmable Robot (Archive), University of Sheffield, 2007
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Welcome to Python! This tutorial will show you how to start writing programs.
A program is a set of instructions used to control the behaviour of a machine. Examples of such programs include:
A computer program (software)