Computer programs are called software. Software is instructions for hardware (the machines) to do work. Software is often divided into two categories: Systems software: the operating system and all the utilities that enable the computer to function.
Applications software: programs that do real work for users. F or example, word processors, spreadsheet programmes, and games are applications software. What is Hardware?
Hardware are computer components that you can touch, like disks, disk drives,monitors, keyboards, printers, boards, and chips. But you cannot touch software. Softwoare exists as ideas, concepts, and symbols. A computer without software is dead — you need software to make the computer work.