Computer
A computer is a machine that is designed to perform mathematical calculations. Most computers manipulate data in the form of binary code, which consists of 1s and 0s.
The world's first computer was built by Charles Babbage in 1833, which he called the Analytical Engine. It was powered by steam and could perform basic arithmetic calculations with accuracy up to six decimal places. It also featured a 'bit bucket' in the back that collected discarded and malformed bits resulting from the calculations; this bucket had to be emptied on a weekly basis. Charles Babbage's wife Ada Augusta, whom operated the Analytical Engine, is considered to be the world's first computer programmer.
Prior to the advent of computing machines, the definition for computer was a human being who performed complex mathematical calculations.
References
http://www.msu.edu/course/lbs/126/lectures/history.html I also have a reason to believe that computers are not for nanotech ninnys and that they were invented by Com Pooter in 1294. Furthermore, computers can go on the Internet so you can watch videos and TV shows on your computer instead of TV. What a great invention!