Computer is one of the most brilliant gifts of modern science.It is an electronic machine used to solve various problems.This is done by the instructions given to it using various programs called software.The ability of computers to follow generalised sets of operations,called programs,enables them to perform an extremely wide range of tasks.The first mechanical computer was designed by Charles Babbage;the British mathematican in the year 1849,that prototype of computer was totally different from modern computers but its basic structure was quite similar.Babbage attempted to make the first automatic computing engine,but he failed to complete it.Parts of his incomplete machine are an display in the Science Museum of London.
The machine he had designed was finally constructed in 1991.Then in the year two thousand the printer Babbage had designed for the engine was also completed.So the first complete Babbage engine was completed 153 years after it was designed.
Modern computers are electronic and digital.They comprise hardware and software.Hardware is any part of the computer that has physical structure such as keyboards or mouse,wires,transistor and circuits while the instructions and data are called software.In short,software is any set of instructions that tells the hardware what to do and how to do it.Other example of software include web browser,games and word processors.Everything you do on your computer will rely both on your hardware and software.
Computer is a very useful machine and can perform a variety of tasks very easily like typing documents,sending emails,playing games and browsing the web.It is also a tool to edit or crrat spreadsheets,presentation and even videos.Computer have become a part of our everyday lives; for example, desktops or laptops are referred to as personal computers.They come in many shapes,sizes,designs and colours and perform many functions in our daily lives at home and in the office.Even when we withdraw cash from ATM,or wait at the traffic signal on the road,or use a calculator,we are using some form of  Computer.A desktop computer includes a computer case,monitor,keyboard,power cord and a mouse.This can only be used with electric power.However,laptop computers are battery-powered computers that are more portable than desktops,allowing you to use them almost anywhere.They are light weight smart devices and can be carried anywhere.
A recent innovation in computers is the development of handheld computers like the ipads or tablets.These are handier computers that allow greater portability than laptops.Instead of keyboard or mouse,tablets use a touch sensitive screen for of computers.However,it does not perform all functions that a desktop or laptop can perform.For example it has no part to insert a USB or writer than can play DVD or CD.
The smart phones that we generally use are also a type pf computer.They can also do things like browsing the internet,sending emails and playing games.The latest form of television is also called smart tv which has applications that let you access various types of online content.For example you can stream videos from internet directly onto your tv.
Many computers are connected to the internet these days.Internet is a global computer network providing a variety of information and communication facilities.We can sit at home and be connected to the whole world by virtue of the internet.You can perform many functions through internet sitting at home which were initially performed manually.It is a convenient way of making payments online for your utility bills and several other tasks.Internet has also opened doors for a social networking around the world.Through various search engines you can browser websites of your internet for information and education.
You can communicate with your friends and family across the globe.However,it is important to understand that internet should be used responsibly as we may encounter websites that spread negative and inappropriate messages and information may be harmful to us and our dear ones.Such websites should be avoided at all costs.Computers and internet have made acess to information,knowledge and entertainment so much easy which was unimaginable in previous generations.Hence,internet is a very useful tool of used with care with responsibility.