
Software is what makes computers useful. It is the print in a blank book. Without it computers have no function or purpose because software provides the instructions to make the machine perform.

An operating system is the most important program that runs on a computer. It performs basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and directories on the disk, and controlling peripheral devices such as disk drives and printers.
Applications are the programs which you use on a computer. Below are some specifics, but if not covered there, try the general list.
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