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Windows, Linux, Unix and MacOS are examples of computer-based operating

systems, and iOS and Android are examples of mobile-based operating systems.

Functions of an operating system

The main functions of an operating system are:

• It controls the working of all input and output (I/O) devices.

• It provides security by means of passwords to prevent misuse of a computer.

• It lets you create and manage files and folders for storing information in a
computer efficiently.

• It allocates memory to various programs whenever required. It also frees the
memory when it is not in use.

Application Software

Application software is a set of programs, developed by programmers in order to
perform specific tasks. They may be installed on a computer depending upon the

user's requirements. There are different types of application software that help in
doing specific types of jobs. Various types of application software that help in doing

specific types of jobs are as follows:

Word-processing
software
MS Word
2021

Spreadsheet
software
MS Excel
2021

PowerPoint
2021
Presentation
software

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