Page 11 - iPrime_V2.2_class5
P. 11
be programmed to perform a specific calculation. But even after working on this
project for 10 years, this machine never became a reality.
In 1833, he invented a machine called the Analytical Engine, the first-ever working
model of a mechanical computer, a fully program-controlled machine. It also
included integrated memory and programs flow control and also ALU into it. This
is why Charles Babbage is known as the ‘Father of computers’.
Difference Engine Analytical Engine
Lady Ada Lovelace’s Programs
The instructions given to Babbage’s Analytical Engine were
in the form of Binary Numbers 0’s and 1’s and the first person
to introduce this concept was Lady Ada Lovelace. Since she
was the first to introduce the concept of programming, she
is known as the First Computer Programmer.
Herman Hollerith’s Tabulating Machine Lady Ada Lovelace
Herman Hollerith, an army engineer, built an
electromechanical device called the Tabulating Machine
in 1890. The machine read and stored data from punched
cards.
After the success of this machine, Hollerith formed a
Computing Tabulating Recording Company to sell his
machine. Later in 1924, his company became a part of
International Business Machines Corporation, today
Herman Hollerith
popularly known as IBM.
Hollerith’s Tabulating Machine
Evolution of Computers 9

