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Charles Babbage is known as the father of the computer. Because all these features
are found in today’s computers.
TABULATING MACHINE: In 1890, an American engineer named Herman Hollerith
Ø
invented a tabulating machine. It was used in the census of the USA. After the
success of this machine, his company later became well known as IBM.
MARK-1: In 1944, Prof. Howard Aiken invented the first
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electro-mechanical computer, known as the MARK-1.

ENIAC: ENIAC was the first successful Electronic
Ø Fig. 4.4
digital computer, built by John Mauchly and John
Presper Eckert in 1946.

Fig. 4.5
UNIVAC: UNIVAC, developed in 1951, was the first commercially available computer
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that could handle both numeric and textual data.

Fig. 4.6
Personal computer: In 1981, IBM introduced the first personal computer (PC). In
Ø
1984, Apple introduced the Macintosh.

Fig. 4.7

Fundamental of Computer 57