computer were preceded by many devices developed by mankind for their computing requirements. However many centuries elapsed before technology was adequately advanced to develop computers.
The key developments that took place till the first computer was developed are as follows
Invention :- Abacus
Inventor :- china
Time:- 16th century
Characteristics :-First mechanical calculating
Applications:- Used for addition and subtraction operations
Invention:-Napier’s Bones
Inventor:-john Napier
Time:-1617
Characteristics :- Three dimensional structure .Holding number 0 to 9 only
Applications:-perform multiplication on number technology used for calculation called Rabdologia.
Invention:-Slide Rule
Inventor:-William Oughtred
Time:- 1622
Characteristics :- It is also known as slipstick.
Applications:-It was primarily used for multiplication and division it was also used for roots.
logarithms and trigonometry functions.
Invention:-Pascaline
Inventor:- Blaise Pascal
Time:- 1642
Characteristics :-First mechanical adding machine. The term carry was introduced in this period.
Applications:-perform addition and subtraction of two numbers
Invention:-Leibniz’s calculating machine
Inventor:- Gottfried Wilhelm von Leibniz
Time:- 1671
Characteristics :-It is also called Reckoning machine.
Applications:- This machine was capable of doing addition , subtraction multiplication and division. It is now being used in speedometers of cars and scooter.
Invention:-Jacquard’s Loom
Inventor:- joseph jacquard
Time:- 1804
Characteristics :-First mechanical weaving machine used punched
Applications:-Simplified the process of textiles cards.
Invention:-Difference Engine
Inventor:- Charles Babbage
Time:- 1822
Characteristics :- The name is derived from the method of divided differences.
Applications:- It was designed to tabulate polynomial functions. This machine is capable of calculating various algebraic functions accurately near 20th place after decimal.
Invention:-analytical engine
Inventor:- charles babbage
Time:- 1837
Characteristics :-First general purpose computer
Applications:- It was a decimal machine used sign and magnitude for representation of a number
Invention:-Tabulating Machine
Inventor:-Herman Hollerith
Time:-1880
Characteristics :- It used punched cards with round holes. Read one card at a time
Applications:- It was the first electromechanical machine which was designed to process the data for census in 1890
Invention:-MARK-I
Inventor:-Howard Aiken
Time:-1937
Characteristics :-Consists of interlocking panels of small glass. counters , switches and controls circuits.
Applications:-Mainly used in the war effort during world war-II
Invention:-ENIAC
Inventor:-JP Eckert and JW Mauchly
Time:-1946
Characteristics :-It is a combination of twenty accumulators. First electronics digital computer.
Applications:-Used for weather prediction, atomic energy calculation and other scientific uses.
Invention:-EDSAC
Inventor:-Maurice Wilkes
Time:-1949
Characteristics :-It was a first computer which provided storage capacity. First computer program was run on machine.
Applications:-Used mercury delay lines for memory and vacuum tubes for logic.
Invention:-EDVAC
Inventor:-John Von Neumann
Time:-1950
Characteristics :-This computer had almost 6000 vacuum tubes and 12000 diodes and consumed 56 KW of power
Applications:-It was a binary computer and capable of storing programs.
Invention:-UNIVAC
Inventor:-JP Eckert and JW Mauchly
Time:-1951
Characteristics :-First general purpose electronic computer with large amount of input and output
Applications:-
Generation of computers
A generation refers to the state of improvement in the development of system. Computers are made up of electromechanical, before generation. Each generation of computer is characterised by a major technological development that fundamentally changed the way.
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