AbacusAbacus

It was invented about It was invented about 3000 B.C.3000 B.C.

It consists of beads It consists of beads divided into 2 parts divided into 2 parts which are movable on which are movable on the 2 rods.the 2 rods.

It is mainly used to It is mainly used to calculate addition and calculate addition and multiplication by using multiplication by using the place value of the the place value of the digit.digit.

Napier’s Logs and BonesNapier’s Logs and Bones

Invented by John Napier Invented by John Napier who developed the idea who developed the idea of logarithms.of logarithms.

It is used to perform It is used to perform addition multiplication and addition multiplication and division.division.

Due to the idea of Due to the idea of logarithm developed in logarithm developed in 1614, the tedium of 1614, the tedium of repetitive calculations repetitive calculations reduced.reduced.

Pascal’s Adding MachinePascal’s Adding Machine

Invented by Blaise Invented by Blaise Pascal.Pascal.

Also known as Pascaline.Also known as Pascaline. It consists of numbers It consists of numbers

toothed wheels having toothed wheels having unique position values.unique position values.

It was capable of doing It was capable of doing additions and additions and subtractions.subtractions.

Leibnitz’s CalculatorLeibnitz’s Calculator Invented by Gottfried Invented by Gottfried

Leibnitz a German Leibnitz a German mathematician .mathematician .

It was able to perform It was able to perform multiplications and multiplications and divisions & multiplications divisions & multiplications through repeated through repeated addition.addition.

Leibnitz’s machine used Leibnitz’s machine used stepped cylinder each stepped cylinder each with 9 teeth of varying with 9 teeth of varying lengths instead of wheels lengths instead of wheels used by Pascal.used by Pascal.

Jacquard’s LoomJacquard’s Loom

Invented by Joseph Invented by Joseph Jacquard.Jacquard.

He manufactured He manufactured punched cards at the punched cards at the end of the American end of the American Revolution.Revolution.

It was completely It was completely automatic and automatic and controlled by the controlled by the process called process called weaving.weaving.

Babbage’s Difference EngineBabbage’s Difference Engine

Developed by Charles Developed by Charles Babbage.Babbage.

It was able to perform It was able to perform mathematical mathematical functions and functions and calculate logarithmic calculate logarithmic tables.tables.

Its operation was Its operation was automatic, multi stop automatic, multi stop operations.operations.

Babbage’s Analytical EngineBabbage’s Analytical Engine

Designed by Charles Designed by Charles Babbage.Babbage.

It was able to perform It was able to perform all four mathematical all four mathematical operation, along with operation, along with comparison.comparison.

It was included with the It was included with the concept of central concept of central processor, storage processor, storage area, memory, input area, memory, input and output devices.and output devices.

Hollerith’s MachineHollerith’s Machine

Invented by Herman Invented by Herman HollerithHollerith

It was the first electro It was the first electro mathematical punched-mathematical punched-card tabulator that used card tabulator that used punched cards for punched cards for input ,output and input ,output and instructions.instructions.

It was used by the It was used by the American Department of American Department of Census. Census.

Mark - IMark - I It was invented by It was invented by

Professor Howard Aiken.Professor Howard Aiken. It could multiply any two It could multiply any two

ten digit numbers in 5 ten digit numbers in 5 seconds which was a seconds which was a record at that time.record at that time.

It was the first machine It was the first machine which could perform which could perform according to pre according to pre programmed instructions programmed instructions automatically without any automatically without any manual interface. manual interface.

By :- BurhanuddinBy :- Burhanuddin Jitesh Jitesh Pravin Pravin Shivam Shivam Soubhik Soubhik