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HISTORY OF THE COMPUTER

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ICT LESSON FOR PRIMARY TWO PUPILS

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HISTORY OF THE COMPUTER

  1. 1. HISTORY OF COMPUTER BY E . I I S R A E L
  2. 2. HISTORY OF COMPUTER •History of computer means how computer came into being. Long ago, people counted with stones, pebbles, fingers, sticks, or marks on the walls.
  3. 3. EARLY COUNTING DEVICE Fingers Stones
  4. 4. EARLY COUNTING DEVICE Pebbles foot Sticks Bones
  5. 5. HISTORY OF COMPUTER •These ways are not convenient for counting large numbers. Hence people looked for easier and quicker ways. This led to the discovery of a device called Abacus.
  6. 6. ABACUS Abacus was the first mathematical device used for calculations. It was invented 5,000 years ago by the Chinese.
  7. 7. HISTORY OF COMPUTER • It consist of strings, beads and wooden handle. It is used to add, subtract and multiply large numbers. • The second counting device is called Napier’s bone.it was invented by John Napier and it is better than Abacus.
  8. 8. NAPIERS BONE/ROD
  9. 9. HISTORY OF COMPUTER • Later in 1642, Pascal invented the first mechanical calculator called Pascal’s Adder. •
  10. 10. ANALYTICAL ENGINE Analytical engine: the Analytical engine was designed by Charles Babbage. It has the same element as the modern computer.
  11. 11. WHO IS CHARLES BABBAGE? •Charles babbage is the father of modern computer.

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