Question

In tabular form draw up the list of people that invented the different types of computers to date

Answer 1

Al Khwarizimi = the grandfather of Computer Science.

Charles Babbage= the maker of the first computer.

Alan Turing= the father of Modern Computer.

make a table and write more if u want to.

Answer 2

Computer is derived from the word compute which means to calculate.

• Before computers were developed people used more simpler devices were used for performing less complex mathematical calculations.
• Here are some popular computing devices from oldest to newest -

1. ABACUS -
   → Believed to be the first computer used for simple calculations.
   → The birth of abacus marks the history of computers.
2. NAPIER'S BONES -
   → The inventor of Napier Bones was John Napier.
   → Decimal point system was used for the first time for calculations.
3. PASCALINE -
   → Blaise Pascal a French mathematician philosopher invented it.
   → First mechanical and automatic calculator also called Arithmetic or
     Adding machine.
4. STEPPED RECKONER -
   → Invented by German mathematician philosopher Gottfried
     Wilhelm.
   → A digital mechanical calculator also called as Leibniz Wheel.
5. DIFFERENCE ENGINE -
   → Charles Babbage ' The father of Computer ' designed it.
   → Mechanical computer capable for performing simple calculations.
6. ANALYTICAL ENGINE -
   → Charles Babbage developed another machine for calculations.
   → The concept of storage was introduced for the first time.
7. TABULATING MACHINE -
   → Herman Hollerith, an American statistician invented this.
   → Worked as a mechanical tabulator.
8. DIFFERENTIAL ANALYZER -
   → Vannevar Bush was the inventor of this machine.
   → First electronic computer.
9. MARK 1 -
   → Howard Aiken was the developer of this.
   → It was the first programmable digital computer.
10. FIRST GENERATION OF COMPUTERS (1940-1956) -
    → Slow, huge, expensive machines use vacuum tubes as major
      component.
    → ENIAC , UNIAC-1 , EDVAC are few computers of this generation.
11. SECOND GENERATION OF COMPUTERS (1957-1963) -
    → Magnetic cores and Transistors were used in this generation.
    → IBM 1620, IBM 7094, CDC 1604, CDC 3600 are few computers of
      this generation.
12. THIRD GENERATION OF COMPUTERS (1958-1971) -
    → Integrated Circuits (IC) were used.
    → IBM 360 series, Honeywell-6000 series, IBM-370/168 are a few
      computers of this generation.
13. FOURTH GENERATION OF COMPUTERS (1972-1980) -
    → VLIC (very large integrated circuits) were used.
    → STAR 1000, PDP 11, CRAY-1, CRAY-X-MP were a few computers of
      this generation.
14. FIFTH GENERATION OF COMPUTERS (1981-Present) -
    → ULIC (ultra large integrated circuits) were used.
    → Desktop, Laptop, NoteBook, UltraBook were the computers in this
      generation.

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