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The word software is also sometimes used in a more narrow sense, meaning application software only. At the lowest level, executable code consists of machine language instructions specific to an individual processor âtypically a central processing unit (CPU).
The term 'software' refers to the set of electronic program instructions or data a computer processor reads in order to perform a task or operation. There are two main types of software: systems software and application software. Systems software includes the programs that are dedicated to managing the computer itself, such as the operating system, file management utilities, and disk operating system (or DOS).