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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 OS, which is the backbone of your pc, the user interface that aloes you to use you computer and read, write and modify files. Application software is â¦the programs you buy or download to run your pc or application software is a set of programs that accomplishes user specific tasks.