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i + COMPUTER GENERATIONS
After these early calculating machines, the present computer took its shape in five
generations.
First Generation (1940s)
There were many computers that were a part of the first generation computers.
MARK-I (The First Electro-Mechanical Powered Computer)
In 1944, Prof. Howard Aiken built the first electro-mechanical computer named Mark-I.
It used punched cards and a typewriter for input and output. Mark-I was much more
reliable than early electronic computers.
Mark-I
ENIAC—The First Electronic Computer
Electronic Numerical Integrator And Computer, was the first electronic general purpose
digital computer built in 1946 by John Mauchly and Presper Eckert. It contained over 18,000
vacuum tubes and was 1000 times faster than Mark-I. ENIAC consumed almost 200 kw of
power.
ENIAC
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