Overview Of The History Of Computers Flashcards
The first device known to carry out calculations
Abacus
What year was the abacus created
Late Middle Ages
A calculating device invented by Blaise Pascal in 1642
Pascaline
Who invented the Pascaline
Blaise Pascal (1642)
Invented a device that was able to add, substract, multiply, and divide
Gottfried von Leibniz (17th Century)
Discovered that the weaving instructions for his looms could be stored on needles passed through holes and pick up threads of the correct color and texture
Joseph Jacquard (1819)
Designed two calculating machines- the difference engine and the analytical engine
Charles Babbage (early and mid 1800s)
Could automatically perform complex operations, such as squaring numbers
The Difference engine
The first computer programmer
Ada Augusta, Countess of Lovelace
Invented a calculating machine that ran on electricity and used punched cards to to store data. Founded the Tabulating Machine Company which is now known as IBM ( International Business Machines Corp.)
Herman Hollerith (end of the 19th century)
The first computer like machine
Mark I
IBM and University Of Pennsylvania built Mark I under the leadership of
Howard Aiken(1944)
Mark I was:
52 feet long, 50 tons, 750,000 parts
Built at the University of Pennsylvania, contained 18,000 vacuum tubes and weighed some 30 tons
The ENIAC (Electronic Numerical Integrator and Calculator) 1946
His design included components such as arithmetic logic unit, memory, control unit, and input/output devices
Jon von Neumann (late 1940s)
