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en.wikipedia.org/wiki/Computer

A computer is a device that can be instructed to carry out an arbitrary set of arithmetic or logical operations automatically. The ability of computers to follow a sequence of operations, called a program .... Early digital computers were electromechanical; electric switches drove mechanical relays to perform the calculation.

www.computerhope.com/issues/ch000984.htm

The ENIAC was invented by J. Presper Eckert and John Mauchly at the ... About 44,000 Programma 101 computers were sold, each with a price tag of $3,200.

www.history.com/topics/inventions/invention-of-the-pc

Invention of the PC: The Computer Age. The earliest electronic computers were not “personal” in any way: They were enormous and hugely expensive, and they  ...

www.computerhistory.org/timeline/computers

The ABC was at the center of a patent dispute related to the invention of the .... While many early digital computers were based on similar designs, such as the ...

www.livescience.com/20718-computer-history.html

Sep 8, 2015 ... The history of computers starts with industrial and governmental ... John Bardeen and Walter Brattain of Bell Laboratories invent the transistor.

overtheair.org/blog/2012/04/when-was-the-first-computer-invented

Apr 27, 2012 ... In 1822, Charles Babbage purposed and began developing the Difference Engine, considered to be the first automatic computing engine that ...

www.engineersgarage.com/invention-stories/computer-history

These cost effective and small computers were energy efficient too. But the heat emission from computer made them prone to early damaged. The third ...

www.ptc.dcs.edu/Moody/comphistory/comphistory_print.html

First of all, the machine broke often and its inventor was the only person who could fix it. Second, it was slow. Third, clerks would not use it: They were afraid it  ...

www.softschools.com/timelines/computer_history_timeline/20

Computers are made up of many parts, and each one of them is a unique invention on its own. ... The first bank computers were invented. They used MICR' or ...