A computer is a machine which manipulates data according to a list of instructions.
Computers take numerous physical forms. The first devices that resemble modern computers date to the mid-20th century (around 1940 - 1941), although the computer concept and various machines similar to computers existed earlier. Early electronic computers were the size of a large room, consuming as much power as several hundred modern personal computers. Modern computers are based on comparatively tiny integrated circuits and are millions to billions of times more capable while occupying a fraction of the space.Today, simple computers may be made small enough to fit into a wrist watch and be powered from a watch battery. Personal computers in various forms are icons of the information age and are what most people think of as "a computer". However, the most common form of computer in use today is by far the embedded computer. Embedded computers are small, simple devices that are often used to control other devices—for example, they may be found in machines ranging from fighter aircraft to industrial robots, digital cameras, and even childrens toys.
Uses of Computers in Daily Life
The computer is used in people daily lives to enable peoples of this world to talk to each other in real time, to process quick artwork rendering, and to regulate systems to enable the administration of fossil fuel use by people. Most gasoline stations are computerized and can not even operate if the computers are down. Almost every major business, banks, tire shops, fast food restaurants, major stores, etc., uses computer and are unable to even operate if the computers are down. Automobiles are computerized. If the computer messes up, it could cause loss of transportation until repaired. People also use computers in daily life to shop, bank, and pay bills from the comfort of their homes. In some cases, people can even apply for jobs online. They also provide entertainment in that people play games, listen to music, chat, etc. online. In fact, computerization is so prevalent in our daily lives that should they be taken away, almost everything would shut down, at least for a short time.