History Of Computer

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History of Computer Computer is not the creation of one day, rather it took a long period for the development of modern computer.

History of computer is described in this table:-

Inventions	Inventors	Characteristics	Applications
Abacus 1602	China	First mechanical calculating device. A horizontal rod represents the one, tens, hundred, etc.	Used for addition and subtraction operations. Calculation of square roots can also be performed.
Napier’s Bones 1617	John Napier (Scotland)	Three dimensional structure. Holding numbers from 0 to 9 only.Represent graphical structure of calculating result. Technology used for calculation called Rabdologia	Perform multiplication of numbers.
Pascaline 1642	Blaise Pascal (France)	First mechanical adding machine. This machine worked on the principle of odometer and watch. Mainly designed with regard to the pressure of liquid.	Perform addition and subtraction of two numbers..
Jacquard’s Loom 1801	Joseph Marie Jacquard (France)	It was first mechanical loom TUsed punched card for the sequence of operation	Simplified the process of textiles.
Analytical Engine 1837	Charles Babbage(London)	First general-purpose computer Stored program in the form of ‘pegs’ also called barrels.	It was a decimal machine used sign and magnitude for representation of a number.
Tabulating Machine 1890	Herman Hollerith (America)	It used punched cards for reading numbers It was the first electromechanical machine.@himexam.com	It was used in the 1890 census.
MARK-1 1944	Howard Aiken(America)	Consists of interlocking panels of small glass, counters, switches and control circuits. Data can be entered manually.	Mainly used in the war effort during World War-II. Magnetic drums are used for storage.
ENIAC 1946	JP Eckert and JW Mauchly (America)	It is a combination of twenty accumulators. First electronic digital computer.	Used for weather prediction, atomic energy calculation and other scientific uses. Used in IBM and other.
EDVAC 1947	John Von Neumann (America)	Electronic digital computer	Logical design of a computer with a stored program
EDSAC 1949	Maurice Wilkes(America)	It was the first computer which provided storage capacity First computer program was run on machine.	Capable of storing instructions and data in memory. Used mercury delay lines for memory, vacuum tubes for logic.
UNIVAC 1951	J. Presper Eckert and John Mauchly (America)	First general-purpose electronic computer with large amount of input and output.	Used magnetic tapes as input and output Use for account work.
IBM-650 Computer 1953	IBM Company	Provided input/output units converting alphabetical and special characters to two-digit decimal code.	Payroll processing Oil refinery design/li> Market research analysis