Early calculating devices

1. Early calculating device
By :- Heli Nileshkumar Parmar

2. 1.Abacus

3. • Abacus, the first calculating
machine, was developed in
China.
• It was used to count numbers
and perform simple
calculations such as addition
and subtraction.

4. 2.Napier’s Bone

5. • Napier’s Bone was developed by
Sir John Napier.
• The device was used to perform
calculations involves addition,
subtraction, multiplication and
division.
• It was named so because the
numbers was carved on bones or
strips of wood.

6. 3. Pascaline

7. • Pascaline , one of the first
mechanical calculators, was
invented by Blaise Pascal in the
year 1642.
• Though it could perform only
addition and subtraction, yet it
is very popular.

8. 4.Difference Engine

9. • Difference Engine was designed by
Charles Babbage in the year 1822.
• Difference engine is an digital device
which could perform mathematical
and astronomical calculations.
• It was also capable of storing data
temporarily and print the output by
punching the results.

10. 5.Analytical Engine

11. • Analytical engine was designed by
Charles Babbage in the year 1822.
• It was first mechanical general
purpose computer which followed
typical IPO cycle used in modern
days computer.
• It was made up of mill, the
calculating unit called CPU in modern
computer.

12. Thank You