// todo need optimize like in event.jsp. Add indexing or not indexing this page. desktop calculators (1 ene 1930 año – 1 ene 1960 año) (Cinta de tiempo)
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desktop calculators (1 ene 1930 año – 1 ene 1960 año)

Descripción:

From the 1930’s to the 1960’s “desktop calculators” were
developed, making the transition from mechanical to electronic.

Añadido al timeline:

computer hidtory

ByCytuser Jayfu003
29 ene 2020

fecha:

1 ene 1930 año
1 ene 1960 año
~ 30 years
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