Computer program

A computer program is a list of orders indicating to a Ordinateur what it must do. It is appeared as one or more sequences of instructions, often comprising source data, having to be carried out in a certain order by a Processeur or data-processing Processus (case of the multi-task systems).

Function

A computer without program does not do absolutely anything, it awaits instructions. In fact, the capacity to follow a recorded program is even often useful, from a historical point of view, to distinguish a Ordinateur from a simple calculating machine. With this definition, the first computer is the Manchester Mark I, first stored programme computer.

Design

At the origin of a program, there is a Source code written by a Programmeur in a comprehensible Computer programming language by the aforementioned programmer.

Differences

According to the language used, this code is then is:
  • Translates with a Instruction set specific to a processor by a Compilateur, then the program obtained can then be carried out directly by the computer.
  • Or is dealt with by Interpréteur (another program), which decodes with stolen the instructions of the high-level language in instructions specific to the processor and which transmits them to him directly for execution.
Sometimes the Computer programming language is reduced to a whole of symbols corresponding to the instructions in computer code. It is the Assembly language and, in this case, a program called assembler is used to make the translation in Machine language.

The term “computer program” is often improperly used like synonym of Logiciel , the current software being often composed of several programs. The software often includes, moreover, of the files of resources containing of the data of all kinds, those do not form part of the program strictly speaking. For example, Microsoft Internet Explorer, Mozilla Firefox, etc are software rather than programs , because it are the fruit of the Concaténation multiple programs carrying out different Action S and functions.

A simple and often abstract program is often called algorithm. The computer programs are today often the subjects of the Logique and the Mathématiques: to see the formal methods, the Semantic of the computer programming languages, etc

See too

Internal bonds

Simple: Computer program Zh-Cn: 程序

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