History of computer


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History of computer

  3. 3. HISTORY OF COMPUTER In information society the focus of commerce is on the generation and distribution of information. Computer is changing the ways we communicate, do business and learn about the different branches of Education.
  4. 4. WHAT IS COMPUTER? The “Computer” is derived from the word “Compute", which means to calculate. so Computer is normally considered to be a calculating device. ORINPUT PROCESSING OUTPUT
  5. 5. USES OF COMPUTER We can store data in a computer and retrieve stored data when we needed. We can send message to our friends, relative and family anywhere in the world by connecting computer with internet. Medical sciences and Biotechnology are using computer to diagnoses the diseases of patient in hospital. For Entertainment purposes.
  6. 6. HISTORY OF COMPUTERABACUS: PICTURE The earliest device that qualifies as a computer is the abacus. The abacus was invented 5,000 years ago in Asia Minor and still in use today .This device is allows users to calculate ,by sliding beads arranged a work.
  7. 7. HISTORY OF COMPUTERJOHN NAIPER(1550-1617) PICTURE John Napier was a Scottish mathematician .He made the first manual calculating device after Abacus .It was called John Napier bones or cardboard multiplication calculator. In addition to multiplication this machine was also used to calculate square roots and cube roots.
  8. 8. HISTORY OF COMPUTERBLAISE PASCAL(1623-1162) PICTURE In 1942 Blaise Pascal, The 18 year old son of French tax collector, invented a numerical wheel calculator to help his father in calculation. This device was known as “PASCALINE” and was only able to Add two numbers.
  9. 9. HISTORY OF COMPUTERBARRON GOTTFRIED(1646-1716) PICTURE In 1694,a German philosopher and mathematician Barron gottfried wilhelm von jeibniz made some improvement in Pascal machine. He added features of multiplication and division. The machine was able to perform these operation by using repeated addition and subtraction.
  10. 10. HISTORY OF COMPUTERCHARLES XAVIER (1785-1870) PICTURE Charles Xavier Thomas De Colmar, a Frenchman, invented a machine in 1820 that could perform the four basic Arithmetic function. This machine was Arithmometer.
  11. 11. HISTORY OF COMPUTERCHARLES BABBAGE(1791-1871) PICTURE An English mathematician ,Professor Charles Babbage made a “Difference Engine” in 1833,which was powered by steam to solve mathematical equations. After ten years, in 1842 he made a general purpose computer named “Analytical Engine". this Engine could Add,subtracted,multiply and divide in automatic sequence at a rate of 60 addition per second.
  12. 12. HISTORY OF COMPUTERGEORGE BOOLE(1815-1864) PICTURE George Boole clarified the binary system of Algebra, that any mathematical equation could be stated either true of false.
  13. 13. HISTORY OF COMPUTERHERMAN HOLLERITH(1862-1929) PICTURE In 1890, an American inventor Herman Hollerith applied the idea of punch boards in the form of for input and output. He a punched card tabulating machine.
  15. 15. GENERATION OF COMPUTER The steps of technological differences are called generations. In 1941 German engineers had developed a computer named Z3 to design airplanes and missiles. In 1943the British made a computer named Colossus to break secret codes during World War 2.
  16. 16. FIRST GENERATION OF COMPUTER First Generation of Computer were characterized by the fact that operating instructions were made-to-order for the specific task for which the computer was to be used. Each computer had a different binary coded program called machine language that told it how to operate.
  17. 17. THE DISTINCT FEATURES OF 1st G VACUUM TUBES: Vacuum tubes were the fragile glass devices that can control and amplify electronic signal. OPERATING INSTRUCTIONS: Operating instruction were used to operate computer for specific tasks. MACHINE LANGUAGE: Different Binary coded program for different comp
  18. 18. FIRST GENERATION OF COMPUTERADVANTAGES DISADVANTAGES Vacuum tubes were the only  First generation computer electronic component available were too large in size. during those days.  Air Conditioning required. Vacuum tubes technology  Non-portable made possible the advent of  Produce large amount of heat that time. They could perform and burn out frequently. computation in millisecond.
  19. 19. SECOND GENERATION OFCOMPUTER In 1948 with the invention of transistor, vacuum tubes replaced with transistors. As a result, the size of electronic machinery has been shrunk. 2nd generation computer replaced machine language to assembly language allowing abbreviated programming code to replace long difficult binary code
  20. 20. 2nd GENERATION OF COMPUTERADVANTAGES DISADVANTAGES Smaller in size as compared to  Air conditioning required. 1st Generation computer.  Frequently maintenance Less heat generated. required. Better portability.  Commercial production was difficult and costly.
  21. 21. THIRD GENERATION OF COMPUTER The invention of the silicon IC(Integrated circuit) by Robert Noyce in 1958 allowed dozens of transistor to be put on a single chip. This packaging made it possible to build computer that were smaller,faster,and cheaper than their transistorized predecessors. Another third generation development included the use of an operating system that allowed machines to run many different program at once with a central program that monitored and coordinated the computer memory.
  22. 22. 3rd GENERATION OF COMPUTERADVANTAGES DISADVANTAGES Smaller in size as compared to  Air conditioning required in previous generation many cases. computers.  Highly difficult technology Working speed of these required for the manufacture computer is faster as compared of IC chips. to previous computers. Easily movable.