According to the Oxford English Dictionary, the first known use of computer was in a 1613 book called The Yong Mans Gleanings by the English writer Richard Brathwait: "I haue [sic] read the truest …

Computers can be classified in a number of different ways, including:
By architecture
• Analog computer
• Digital computer See more

The term hardware covers all of those parts of a computer that are tangible physical objects. Circuits, computer chips, graphic cards, sound cards, memory (RAM), motherboard, displays, power supplies, cables, keyboards, printers and "mice" input … See more

Software refers to parts of the computer which do not have a material form, such as programs, data, protocols, etc. Software is that part of a computer system that …

A computer does not need to be electronic, nor even have a processor, nor RAM, nor even a hard disk. While popular usage of the word "computer" is synonymous with a personal electronic computer, a typical modern definition of a computer is: "A device that … See more

Pre-20th century
Devices have been used to aid computation for thousands of years, mostly using See more

Computers have been used to coordinate information between multiple locations since the 1950s. The U.S. military's SAGE system was the first … See more