Essay --

A reckoner is a general purpose device that can be programmed to carry out a set of arithmetical or logical operations. Since a sequence of operations can be readily changed, the computing device can solve more than one kind of problem.Conventionally, a computer consists of at least one processing element, typically a central processing unit and some form of memory. The processing element carries out arithmetic and logic operations, and a sequencing and control unit that can change the order of operations establish on stored information. Peripheral devices allow information to be retrieved from an outer source, and the result of operations saved and retrieved.In World War II, mechanical analog computers were used for specialized military applications. During this time the first electronic digital computers were developed. Originally they were the size of a large room, consuming as much power as several hundred modern personal computers .Modern computers based on integrated circu its are millions to billions of times more capable than the early machines, and occupy a fraction of the space. Simple computers are small enough to delay into mobile devices, and mobile computers can be powered by small batteries. Personal computers in their various forms are icons of the Information Age and are what well-nigh people think of as computers. However, the embedded computers found in many devices from MP3 players to fighter aircraft and from toys to industrial robots are the most numerous.History of computing Etymology The first put down use of the word computer was in 1613 in a book called The yong mans gleanings by English writer Richard Braithwait I haue read the truest computer of Times, and the best Arithmetician that euer breathed, and he... ...e functional at Bell Labs in November 1937, Stibitz invented and built a relay-based calculator he dubbed the Model K, which was the first to use binary circuits to perform an arithmetic operation. later on models added greater sophistication including complex arithmetic and programmability.The AtanasoffBerry Computer was the worlds first electronic digital computer, albeit not programmable. Atanasoff is considered to be one of the fathers of the computer. Conceived in 1937 by Iowa verbalise College physics professor John Atanasoff, and built with the assistance of graduate student Clifford Berry, the machine was not programmable, being designed only to solve systems of linear equations. The computer did employ parallel computation. A 1973 court ruling in a patent dispute found that the patent for the 1946 ENIAC computer derived from the AtanasoffBerry Computer.The fir