2. * In the past when there was no computer or calculator people
used to count with fingers or stones.
Counting in the Past
3. Then in China invented the first calculating machine call
Abacus.
The Abacus
4. *In 1617 John Napier, a mathematician from Scotland,
invented calculating rods call Napier’s Bones.
Napier’s Bones
5. Some years later, in 1642 a young mathematician named
Blaise Pascal invented a calculating machine called Pascal’s
Arithmetician Machine.
Pascal’s Arithmetician
Machine
6. *Then the first calculating machine that can be truly
called a computer was invented in England by Charles
Babbage in 1835.
The Analytical Engine
7. *Then in 1888 Herman Hollerith made The Tabulating
Machine.
The Tabulating Machine