|of these articles treats instructions in the data processing. To the instruction within the military range, see military instruction. To instruction and obedience as terms of the sociology, see rule.|
An instruction is the smallest functional unit when programming a program, which steers a microprocessor. ThatProgram is usually written in a programming language, which combines instruction sequences into functions. The source text written in the programming language is translated by a compiler or an interpreter into machine language, which consists only of the individual instructions in machine-readable form. Assembler languages are not programming languages, those the machine instructionsinto functions combine, but this only one to one in human being-readable form represent.
- Input - or output instructions read data in of the keyboard, of a file or from other sources or them give them on the monitor,on a printer or into a file out.
- Computations change data or them again combine data. This also mathematical computations can be, like addition or multiplication.
- Control structures decide due to the available data, which instructions are next implemented. In particular an instruction sequence can be repeated.
During the use of a computer program an instruction is a procedural instruction, which the user gives to the program. With modern programs this takes place usually via serving a graphic user surface with the help of a mouse.
|Wiktionary: Instruction - word origin, synonyms and translations|