Systems software
Systems software helps run and maintain the computer. It includes the , and .
Operating system
The biggest part of systems software is the operating system. It is an essential part that allows other systems software, and , to communicate with .
All computers have an operating system. They cannot operate without one.
The operating system is needed to perform a number of tasks. It provides a , manages the use of memory and the opening, closing, saving and deleting of files. Most operating systems have features that look after the security of the computer with usernames and passwords.
Examples of operating systems include Windows, Mac OS, Linux, Chrome OS and, on smartphones and tablets, Android and iOS.
