Computer Software

Computer Software is the instructions executed by a computer.

Hardware is the device on which the software runs.

Programs stored on non-volatile storage built from integrated circuits (e.g. ROM or PROM) are usually called firmware.

Software can be split into two main types - system software and application software or application programs.

System software is any software required to support the production or execution of application programs but which is not specific to any particular application. Examples of system software would include the operating system, compilers, editors and sorting programs.

Application software programs would include an accounts package or a CAD program. Other broad classes of application software include real-time software, business software, scientific and engineering software, embedded software, personal computer software and artificial intelligence software.

Software includes both source code written by humans and executable machine code produced by assemblers or compilers.

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