Early calculating device.pptx

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.

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