History of Computers


 
 
Concept Explanation
 

History of Computers

Computer is not the creation of one day, rather it took a long period for the development of modern computer. History of computer is described below:

Abacus 1602

Inventor : China

Characteristics:

  • First mechanical calculating device.
  • A horizontal rod represents the one, tens, hundred, etc.
  • Applications:

  • Used for addition and subtraction operations.
  • Calculation of square roots can also be performed.
  • Napier's Bones 1617

    Inventor : John Napier (Scotland)

    Characteristics:

  • Three dimensional structure.
  • Holding numbers from 0 to 9 only.
  • Represent graphical structure of calculating result.
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    Sample Questions
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    Question : 1

    Who is the father of Computer?

    Right Option : B
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    Question : 2

    When was Pascaline invented?

    Right Option : C
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    Question : 3

    John Napier invented Logarithm in __________________

    Right Option : A
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