ENIAC- FORE FATHER OF COMPUTERS
Electrical Numerical Integrator And Calculator (ENIAC) is made up 70,000 resistors, 17,648 vacuum tubes, 1,500 relays, 10,000 capacitors, 50,00,000 soldered joints and 6,000 manual switches for performing simple calculations like 5000 additions, 357 multiplications or 38 divisions . . It covers 1,800 sq.ft (167 m2) times faster than the modern electronic calculators and consuming a power of 160 KW.
ENIAC is mainly developed for American military for exact calculations. The estimated cost (U.S $ 3,120,606) was borne by them and patent had been filed on June 26,1947. The team work of John Mauchy and John Presper Eckert made this invention for the American military. It is the best calculator ever and it’s make came to an end by 1955. ) of floor space with a weight of 30 tons . It is 10,000
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