All instructions and procedures (programs) and related data enabling computer and other programmable devices to execute specified functions.

Software is often understood as a computer programme synonym, though it has widest meaning and includes also programs used by other facilities. Software includes operating systems, applications, programs for creating programs and applications, driver software for various devices (from tv sets and other electronic equipment, calculators, mobile phones, to computer components for e.g. DVD recorders) - so called firmware, as well as various programs used for facilities, network and telecommunication systems etc.