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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).
System software is the most popular and the most used software out of all three. System software also offers you a protective cover for all the other software and it also gives support to some of the hardware parts of the computer like keyboard and printers. The programming software is a must use for programmers.