Un logiciel est un ensemble de programmes, données, instructions, bibliothèques et éléments numériques connexes qui dirigent le fonctionnement d’un système informatique. Il se distingue du matériel, qui désigne les composants physiques exécutant ou stockant ces instructions.
A collection of data or computer instructions that tell the computer how to work. This is in contrast to physical hardware, from which the system is built and actually performs the work. In computer science and software engineering, computer software is all information processed by computer systems, programs and data. Computer software includes computer programs, libraries and related non-executable data, such as online documentation or digital media.