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UNIT Information and
3 Communication
Technology Skills-II
Topics Covered 95%
Computer System Introduction Operating System
Windows 11 Operating System Procedure for Starting a Computer
Login & Logout Shutting Down the Computer
Using Keyboard Mouse Operations in Windows 11
Performing Basic File Operations Computer Care and Maintenance
Computer Security and Privacy Protecting Computer Against Viruses
What are Temporary Files?
ICT stands for Information and Communication Technology. It is a set of digital technology including computers
hardware, software and networking for storing, managing and communicating the information.
ICT skills are the ability to access software programs and manage the basic functions of a computer in an effective way.
It helps you communicate with the people around you in your personal and professional life.
ICT skills help us to communicate, run our business and stay connected with our family and friends. Hence, every
person needs to acquire ICT skills and build them to stay updated with the latest software and applications (apps).
COMPUTER SYSTEM INTRODUCTION
A computer is an electronic device designed to take input from the user, process it and then return the desired output.
A computer system is a combination of hardware and software components that help in doing the required task.
The physical components of the computer which you can touch and feel are called Hardware. Examples are mouse,
keyboard, monitor, printer, etc.
A set of instructions given to the computer to perform specific tasks is called Software. Computer is of no use without
software. There are three types of software: system software, application software and utility software. Let us learn
about them.
Mobile devices, including smartphones and tablets, function as complete computer systems with both hardware and
software components. They are more compact and portable than traditional computers, making them convenient to
carry and use on the go.
System Software
System software is a software which is compulsory for the computer. Without a system software computer is just a
dummy without any use.
It is always running in the background of your device and helping the user to smoothly use the computer system.
For example: Operating systems like Windows, Mac OS, DOS, etc.
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