OPERATING SYSTEM (OS)

• An operating system is the program that is loaded into the computer• coordinates all the activities among

computer hardware devices.• It controls the hardware in the

computer , peripherals, manages memory and files.

• It enables the user to communicate with the computer and other software

• examples of operating system are Microsoft Windows, Macintosh OS X,Linux , Unix and also DOS

Functions Of Operating System

1. Starting a computer2. Providing a user interface The three types of user interface are

Command-Line, Menu-Driven and Graphical User Interface (GUI)

Command-Line Menu-Driven

GUI

3. Managing data and programs

4. Managing memory

5. Configuring Devices

EXERCISES

1. What is definition of OS?2. List all the functions of OS.