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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).
For example, the computer monitor used to view this text or the mouse used to navigate Diffen is considered computer hardware. Software is a program, such as an operating system or a web browser, that is able to instruct a computer's hardware to perform a specific task. Unlike hardware, software has no physical form.