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Computer & Technology Mahidol Wittayanusorn School 1
History of Computers
ง40101 เทคโนโลยีสารสนเทศพื้��นฐาน
Computer & Technology Mahidol Wittayanusorn School 2
Wilhelm Schickhard (1623)
the machine for calculating astronomical tables.
The machine could add and subtract six-digit numbers, and indicated an overflow of this capacity by ringing a bell.
not programmable
Astronomer & mathematician
Computer & Technology Mahidol Wittayanusorn School 3
Blaise Pascal (1642)
The second mechanical calculator “Pascaline”
A decimal machine
Mathematician & Physicist
Pascaline
Computer & Technology Mahidol Wittayanusorn School 4
Charles Babbage (1822)
Father of modern computer who originated the idea of a programmable computer
Punch cards wanted more accuracy in calculations
Mathematician, philosopher, mechanical engineer, computer scientist
Computer & Technology Mahidol Wittayanusorn School 5
Charles Babbage (1822)Mathematician, philosopher, mechanical engineer, computer scientist
The London Science Museum's replica difference engine, built from Babbage's design.
The design has the same precision on all columns, but when calculating converging polynomials, the precision on the higher-order columns could be lower.
Computer & Technology Mahidol Wittayanusorn School 6
Herman Hollerith (1889)Statistician
developed a mechanical tabulator based on punched cards to rapidly tabulate statistics from millions of pieces of data.
Computer & Technology Mahidol Wittayanusorn School 7
Konrad Zuse (1938)
Built first working mechanical computer, the Z1
Engineer & Computer pioneer
Konrad Zuse in 1992
Built first working mechanical computer, the Z1
Binary machine German government
decided not to pursue development -- W.W.II already started
Computer & Technology Mahidol Wittayanusorn School 8
ENIAC (1943)Electronic Numerical Integrator And Computer
Designed by Mauchly and Echert of the University of Pennsylvania
The first electronic computer BIG!
18,000 tubes 70,000 resistors 10,000 capacitors 6,000 switches 30 x 50 feet 30 tons 140 kW of power Decimal number system used Programmed by manually setting swit
ches 5,000 additions per second
Computer & Technology Mahidol Wittayanusorn School 9
ENIAC (1943)Electronic Numerical Integrator And Computer
Detail of the back of a section of ENIAC, showing vacuum tubes.
Computer & Technology Mahidol Wittayanusorn School 10
Took idea of ENIAC and developed concept of storing a program in the memory
This architecture came to be known as the “Von Neumann” architecture
Von Neumann & Goldstine
John Von Neumann(1903-1957)
Computer & Technology Mahidol Wittayanusorn School 11
Generations of Electronic Devices
Vacuum tube - 1946-1957 Transistor - 1958-1964 Small scale integration - 1965 on
Up to 100 devices on a chip Medium scale integration - to 1971
100-3,000 devices on a chip Large scale integration - 1971-1977
3,000 - 100,000 devices on a chip Very large scale integration - 1978 to date
100,000 - 100,000,000 devices on a chip Ultra large scale integration
Over 100,000,000 devices on a chip