4 ms·
There were no transistors during WWII. (The first one was demonstrated in late 1947 apparently.) A valve is a vacuum tube (https://en.wikipedia.org/wiki/Vacuum_
by qiqitori 5y ago
There were no transistors during WWII. (The first one was demonstrated in late 1947 apparently.) A valve is a vacuum tube (https://en.wikipedia.org/wiki/Vacuum_tube https://en.wikipedia.org/wiki/Vacuum_tube).