System software:

System software helps run the  computer hardware and system. It is designed to control the operations of a computer and coordinate all external devices like communication devices, printers, keyboards, display units, etc. It manages all the computer resources like memory and processor time in optimal and stable manner.  

System software provides a useful link between user and computer. It also assists the computer in the efficient control, support, development and execution of application software. System software is essential for computer hardware to be functional and useful.  Some common types of system software are: