Computer’s history
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Transcript of Computer’s history
In this presentation we will study how these machines work
In this presentation we will study how these machines work
Abacus
Napier’s bones
Abacus
Napier’s bones
AbacusAbacus
• It works with beads free to move around on wires which are used for addition and subtraction
• It works with beads free to move around on wires which are used for addition and subtraction
Napier’s bones or rodsNapier’s bones or rods
• In 1614 john Napier invented a device called Napier's bone or rods. These rods helped to multiply and divide. they were fast and accurate.
• In 1614 john Napier invented a device called Napier's bone or rods. These rods helped to multiply and divide. they were fast and accurate.