History of Computers

Early Ideas Abacus Logs by John Napier Wilhelm Shickard William Oughtred Pascaline Leibniz Calculator Jacquard Loom

Blaise Pascal (1623-1662)Gottfried Wilhelm von Leibniz

(1646 – 1716)

Joseph-Marie Jacquard (1752-1834)

Early Computers Difference

Engine Analytical

Engine

Charles Babbage (1791-1871)

Ada Augusta Lovelace

ADA – Programming Language

Early Computers Hollerith’s Punch

Card Machine ABC – Atanasoff-

Berry ComputerSpecial Purpose Electronic Digital Computer Herman Hollerith

(1860-1929)

John Vincent Atanasoff

GENERATIONS of Computers

1. First Generation (1945-1956)

Technology: Vacuum Tubes ENIAC - Electronic Numerical

Integrator and Computer EDVAC - Electronic Discrete

Variable Automatic Computer UNIVAC - Universal Automatic

computer

GENERATIONS of Computers

2. Second Generation (1957-1963)

Technology: Transistor Invented by William

Shockley, John Bardeen, and William Brattain

GENERATIONS of Computers

3. Third Generation (1964-1971)

Technology: Integrated Circuits

Robert Noyce(1927-1990)Jack Kilby

GENERATIONS of Computers

4. Fourth Generation (1971-present)

The Microprocessor The Microcomputer The Personal Computer The Apple II

GENERATIONS of Computers

5. Fifth Generation (present-beyond)

Artificial Intelligence games playing expert systems natural language robotics