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5 gen 1904 anni - Vacuum tube

Descrizione:

Flemming
diode
electron tube/valve
thermionic tube/valve

Aggiunto al nastro di tempo:

History of Computing

ByJanna Hawkins

2 nov 2018

0

0

1220

Data:

5 gen 1904 anni

Adesso

~ 121 years ago

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