There are three ages of computer

1)Dark age

2)Middle age

3)Modern age

*History of Computer

* Dark age * ABACUS is a manual computing device consisting of

a frame holding parallel rods strung with movable counters. The ABACUS , which was invented about 5000 year ago in Asia Minor and is still in use today and is considered the first computer this device allows user to make communications using a system of sliding beads arranged an a rack. Easily merchants used. The Abacus lost to importance it took nearly 12 countries, for the next significant advance in computing devices to emerge.Design By :

M.Masood

Design By : M.Masood

Middle age (Analytical Engine)Charles Babbage, a British professor mathematics is the man who invented the first computer in 1837. It was basically an mechanical type of calculator that also had a memory. The computer was powered by steam engine and used punched cards for programming.

Design By : M.Masood

Computer HistoryYear/Enter

Computer HistoryInventors/Inventions

Computer HistoryDescription of Event

1936 Konrad Zuse - Z1 ComputerFirst freely programmable computer.

1942 John Atanasoff & Clifford BerryABC Computer

Who was first in the computing biz is not always as easy as ABC.

1944 Howard Aiken & Grace HopperHarvard Mark I Computer

The Harvard Mark 1 computer.

1946 John Presper Eckert & John W. MauchlyENIAC 1 Computer

20,000 vacuum tubes later...

*Modern Age (1940 to till now)

* The First computer of modern age Mark-I in 1944 by Howard Aiken , here start modern ages of computer generation . Each generation of computer is characterized by a major technological development that functionally changed the way of computer further.

Design By : M.Masood

MARK-I

ENAIC

Design By : M.Masood

* First Generation (1941 to 1959) Major invention vacuum tube replace by relay system.1.ENIAC (Electronic numerical integrator and calculator)2.Magnetic tape for external devices3.Machine language use .

* Second Generation (1959 to 1965)

Major invention transistor replace by vacuum tube.1.Magnetic Disk Introduce.2.Assembly Language.

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* Fourth Generation (1970 to 1990)

Major invention : Introduce Microprocessor.1.Micro Computer .2. Increase internal RAM and External RAM.

* Fifth Generation (1990 to Till now)

1. Increase and change Microprocessor Architecture .2.Artificial Intelligence system.

Design By : M.Masood