what is computer? history of computer''? who is invention of computer?SOME INVENTORS NAME GIVEN?

computer-

computer is an electronic device.
it can perform all types of mathematical and logical operation .
it can accept data,store data,process data, and print data.

HISTORY OF COMPUTER 

 before the invention of computer, calculator was introduced.main difference between calculator and 

computer is that computer can do logical operation and calculator can"t do logical operation.

1. ABACUS

INVENTION-      1602 

INVENTOR-        CHINA

FIRST MECHANICAL CALCULATOR DEVICE.

USED FOR  ADDITION AND SUBTRACTION OPERATIONS.

2.PASCALINE CALCULATOR.

INVENTION 1642

INVENTOR-JOHN PASCAL

-FIRST MECHANICAL ADDING MACHINE.-

-PERFORM ADDING AND SUBTRACTION OF TWO NUMBER.

3. FATHER OF COMPUTER .

- CHARLES BABBAGE WAS KNOWN AS FATHER OF COMPUTER , HE IS INVENTED TWO        MACHINE.

1. IN 1822 , INTRODUCED DIFFERENCE ENGINE.

2. IN 1837 INTRODUCED ANALYTICAL ENGINE.

IT WAS FIRST DEMONSTRATED IN PARIS MUSEUM.

4. ENIAC (ELECTRONIC NUMERICAL INTEGRATOR AND COMPUTER)

-INVENTION- 1946

-INVENTOR  - JP ECKERT AND JOHN MAUCHLY

-FIRST ELECTRONIC DIGITAL COMPUTER.

-USED FOR WEATHER PREDICTION,ATOMIC ENERGY CALCULATOR AND OTHER     SCIENTIFIC USES.

5. EDSAC (ELECTRONIC DELAY STORAGE AUTOMATIC CALCULATOR)

-INVENTION - 1949

-INVENTOR  -  JOHN VAN AND MAURICE WILKES 

- IT  WAS FIRST COMPUTER WHICH PROVIDED STORAGE CAPACITY.

- FIRST COMPUTER PROGRAM WAS RUN ON MACHINE 

       RAM -- RANDOM ACCESS MEMORY 

       ROM -- READ ONLY MEMORY 

6.UNIVAC (UNIVERSAL AUTOMATIC COMPUTER)

- INVENTION - 1951 

- INVENTION - JP ECKERT AND JOHN MAUCHLY  

- FIRST GENERAL PURPOSE  ELECTRONIC COMPUTER WITH LARGE AMOUNT OF INPUT AND OUTPUT.