Computers are powerful tools because they can process information with incredible speed, accuracy and dependability. They can efficiently perform input, process, output and storage operations, and they can store massive amounts of data.Know More
Computers enable users to access information whenever necessary and to share information with other users. They allow people to use the Internet, which is a global network connecting millions of individuals, educational institutions, businesses and government agencies.
Through the Internet, users communicate with each other, search for helpful information, buy products and services, and access various types of entertainment. A widely used component of the Internet is the World Wide Web, which consists of numerous documents known as Web pages. These pages are composed of text, video, sound, graphics and other types of content.
Desktop computers typically comprise a system unit, input devices and output devices that fit on a table, whereas notebook computers are small, portable machines. Many people use desktop and notebook computers to access the Internet or accomplish tasks that require the use of application programs.
Computers that fit in the hand are called handheld computers. Midrange servers are bigger and more powerful than workstation computers. The quickest and most powerful type of computer is called a supercomputer. Another extremely efficient computer is the mainframe, which can simultaneously manage thousands of linked users.Learn more about Computer History
The first mechanical computer was the Difference Engine built in 1822 by Charles Babbage, considered as the "father of the computer." Between 1847 and 1849, he made an improved version of his first model, which he called Difference Engine No. 2. However, the machine was not transformed into a full-scale functional device due to lack of funding.Full Answer >
The Z3, designed in Germany by Konrad Zuse and completed in 1941, is widely considered to be the first programmable computer. While later computers were significantly faster, the Z3 laid the groundwork for further development.Full Answer >
The fifth-generation computer was a project spearheaded by Japan in order to move ahead of Western computer technology. The plan was to overhaul computer technology and create their own.Full Answer >
According to a 1986 contest held by Boston's Computer Museum, the first true computer was the Kenbak-1, designed by John Blankenbaker in 1971. The Kenbak-1 is considered the first personal computer, although it had no microprocessor and used small- and medium-scale integrated circuits.Full Answer >