historia informatica By franxu Period: 1202 to 2018 Ábaco Period: 1440 to 2018 Imprenta Period: 1623 to 2018 Calculadora Philipp Matthäus Hahn Period: 1712 to 2018 Máquina de vapor Thomas Newcomen Period: 1871 to 2018 Teléfono Johann Philipp Reis Period: 1873 to 2018 Válvulas Period: 1899 to 2018 Bateria Alessandro Volta Period: 1936 to 2018 Computadora Konrad Zuse Period: 1947 to 2018 Transitores Period: 1956 to 2018 Transistor William B. Shockley, John Bardeen y Walter Brattain Period: 1958 to 2018 Circuitos integrados Jack Kilby Period: 1958 to 2018 Circuitos integrados Period: 1981 to 2018 "Laptop" Period: 1991 to 2018 Microprocesadores