When and why was the eniac unplugged?

Answer 1

ENIAC was unplugged as it runs on technology that makes the average 10-year-old Linux box seem like a Concorde compared to a turtle. It did calculations at a rate of under 5000 additions a second. Nowadays new computers (running the Intel Core i7 Extreme Edition i980EE processor) can do well over 100,000 MILLION calculations per second, even that 10-year old Linux box can do about 3,561 MILLION calculations per second (running AMD Athlon processor).

BTW: for comparison; the average person working with pen and paper can do about 0.0119 calculations per second

Sourced from http://en.wikipedia.org/wiki/Instructions_per_second