miércoles, 6 de junio de 2007

Historia de la informatica...

  • Origenes

3500 a.c.

Se inventa el ábaco (en Babilonia), primera "máquina" para realizar cáculos.
Ábaco chino
1617..

John Napier inventa sus varillas de numeración (o huesos de Napier).
1621..

Invención de la regla de cáculo.
Regla de cáculo
1624..

Wilhelm Schickard construye la primera calculadora mecánica.
1639..

Blaise Pascal inventa y fabrica una sumadora mecánica llamada la Pascalina.
1673..

Gottfried Wilhelm Leibniz diseña y construye una máquina mecánica para realizar cálculos aritméticos. El sistema diseñado por Leibniz se usó en años posteriores para fabricar calculadoras mecánicas.
1800..

Tarjetas perforadas de Jacquard.
Tarjeta perforada
1822..

Charles Babbage presenta su proyecto de la máquina en diferencias, para evaluar polinomios.
1830..

Babbage presenta las bases de la informática en su proyecto de la máquina analítica, que nunca se llegó a construir.
1854..

George Boole desarrolla el álgebra que lleva su nombre: álgebra booleana.
1885..

Herman Hollerith construye la máquina censadora o tabuladora, que por medio de tarjetas perforadas reducía el tiempo al realizar el censo.
Máquina censadora
1894..

Leonardo Torres Quevedo presenta su máquina algebraica.
1924..

T. J. Watson renombra el empresa CTR, por International Business Machines (IBM)
Logo de IBM en 1924
1930..

Vannevar Bush diseña una máquina analógica que resolvía ecuaciones diferenciales: el Analizador Diferencial.
1937..

Inicio de la teoría de la computabilidad con la descripción de la máquina de Turing.

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