Computer is a modern tool which has made life very easy and simple. It has the capability to complete more than one task in small time. It is able to do work of many human beings alone within less time. It is the utility of highest efficiency. The first computer was a mechanical computer which was created by the Charles Babbage. A computer works successfully using its hardware and fully installed application software. Other accessories of the computer are keyboard, mouse, printer, CPU and UPS. The data which we put into the computer using device is called input data and device as input device and data which we take outside using printer or the other device is called as output data and device as output device. The input data gets changed into the information which can be stored and changed anytime. Computer is very safe tool for data storage which is being used in various fields. We can shop, pay our electricity bill, water bill, video chat, messaging, e-mail messages anywhere in the world and lots of online activities using the internet.

The world is developing day by day, the needs of humans are higher and higher. For several reasons, the Internet is one of the most amazing creations for almost everybody all over the world. First, the Internet provides humankind an enormous amount of optional information, knowledge. Using google engines like google, they can ask any questions and find a website they need. Besides, there are millions of videos with a diversity of topics, and even online courses. Secondly, when life is getting busier and busier, a lot of people feel lonely, they keep staying at home without knowing anything to do. But now, the social network gives everyone an endless supply of entertainment, they can watch the movie, listen to music, read free magazines, even play games online. Finally, humanity can connect with the community. Using social networking sites like Facebook, Skype, Twitter, Instagram, … and share stories. In short, it is clear that the Internet is indispensable in people’s life.