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The Pascaline.
Created by Blaise Pascal. -
Leibniz Machine.
Several decades later, in 1671, German mathematician and philosopher Gottfried Wilhelm Leibniz (1646–1716) came up with a similar but more advanced machine. Instead of using cogs, it had a "stepped drum" (a cylinder with teeth of increasing length around its edge), an innovation that survived in mechanical calculators for 300 hundred years. -
Programmable Engines.
The first person to attempt this was a rather obsessive, notoriously grumpy English mathematician named Charles Babbage (1791–1871). -
Analytical Engine.
Augusta Ada Byron (1815–1852), Countess of Lovelace, daughter of the poet Lord Byron. An enthusiastic mathematician, she helped to refine Babbage's ideas for making his machine programmable—and this is why she is still, sometimes, referred to as the world's first computer programmer. -
Boolean Algebra.
In 1854, a little over a century after Leibniz had died, Englishman George Boole (1815–1864) used the idea to invent a new branch of mathematics called Boolean algebra. In modern computers, binary code and Boolean algebra allow computers to make simple decisions by comparing long strings of zeros and ones. -
Punched Cards.
Invented by Herman Hollerith. -
Z1 Computer.
Konrad Zuse. First freely programmable computer. -
Period: to
Primera Generacion de Computadoras
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ABC Computer.
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The Colossus.
Alan Turing (1912–1954) was a brilliant Cambridge mathematician whose major contributions were to the theory of how computers processed information. In 1936, at the age of just 23, Turing wrote a groundbreaking mathematical paper called "On computable numbers, with an application to the Entscheidungsproblem," in which he described a theoretical computer now known as a Turing machine. -
Harvard Mark I Computer
The first large-scale digital computer of this kind appeared in 1944 at Harvard University, built by mathematician Howard Aiken (1900–1973). -
ENIAC 1 Computer
John Presper Eckert & John W. Mauchly -
Manchester Baby Computer & The Williams Tube
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The Transistor
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UNIVAC Computer
First commercial computer & able to pick presidential winners. -
IBM 701 EDPM Computer
IBM enters into 'The History of Computers'.