software
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In computing, a collection of programs and procedures for making a computer perform a specific task, as opposed to hardware, the physical components of a computer system. Software is created by programmers and is either distributed on a suitable medium, such as CD-ROM, or built into the computer in the form of firmware. Examples of software include operating systems, compilers, and applications such as payroll or word processing programs. No computer can function without some form of software.
To function, computers need two types of software: application software and systems software. Application software, such as a payroll system or a word processor, is designed for the benefit of the end user. Systems software performs tasks related to the operation and performance of the computer system itself. For example, a systems program might control the operation of the display screen, or control and organize backing storage.
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