ENIAC(electronic numerical integrator and calculator) was made during in 1946 for the U.S.Army. it was made by John William Mauchly & J.Presper Eckert.
ENIAC contained 17,468 vacuum tubes, 7,200 crystal diodes, 1,500 relays, 70,000 resistors, 10,000 capacitors and around 5 million hand-soldered joints.
ENIAC was designed to calculate artillery firing tables for the United States Army's Ballistic Research Laboratory.
Its main features are as follows:
It is the first electronic general-purpose computer.
consumed 150 kW of power.
photo credit: edn.com
It had no moving parts except the input and output.
ENIAC was developed for military needs and was used for many years to solve ballistics (fire weapons) achieved problems.
The addition of two numbers was achieved in 200 microseconds and multiplication in 2000 microseconds.
It weighed more than 30 short tons (27 t), was roughly 8 by 3 by 100 feet (2.4 m × 0.9 m × 30 m), took up 1800 square feet.
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