ORIGIN OF COMPUTERS

Origin  of  computer  could  be  rigorous  efforts  of  men  to  count  large  numbers.  This  process of  counting  of  large  numbers  generated  various  systems  of  numeration  like  Babylonian system  of  numeration,  Greek  system  of  numeration,  Roman  system  of  numeration  and Indian  system  of  numeration.  Out  of  these  the  Indian  system  of  numeration  has  been accepted  universally.  It  is  the  basis  of  modern  decimal  system  of  numeration  0-9.

Here the list of some types of computers

1. Abacus

2. Napie's Bones 

Invented by John Napier in 1617

3. Slide Rule 

Invented by William oughtred in 1622

4. Pascal's Calculator

Invented by French Mathematician-philosopher Blaise Pascal between 1642 and 1644

5. Leibniz‟s Multiplication and Dividing Machine

Invented by Gottfried Wilhelm von Leibniz in 1673

6. Difference  Engine

Invented by Charles Babbage in 1820 and 1830.

7. The Analytical Engine

Invented by Charles Babbage in 1837. (Next version of Difference Engine)

8. Mechanical and Electronic Calculator

Invented by Wilhelm Schickard in 1642.