We are living in the computer era. The 21st century is also called electronic century. Computer is one of the most powerful electronic machines. Computer has revolutionized the way we live and work. Computer has affected all aspects of people's lives. It has become a need in our daily activities. In this century, computer has changed the style of our daily activities. In near future, we shall totally depend on the computer. For example, all library books will be converted into digital form. It will be possible to access library books through the internet. The online universal libraries will be developed for students and teachers. Similarly, the computer will control most of the systems.
I have put in, a lot of hard work to create presentation slides based on
the computer science notes. You can download the necessary presentation
slides and use them to prepare for the examinations you are appearing
for. To access these slides, you will need presentation software. The
links below contain the computer science notes for grade 12. Feel free
to ask if you have any questions 
- Data Communication and Networking
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