As I recall the benefits were that tubes could be made smaller than pn junctions and the power requirement was much lower. The problem was that the anode being only a few atoms in size was quickly destroyed by the collision of electrons. Anybody have an update?
2006-08-25 18:34:45 · 2 answers · asked by Sleeping Troll 5 in Science & Mathematics ➔ Engineering
Economics is what drives electronics. PN is cheaper to make so that is what they will use it until there is something cheaper. The nature of engineering.
2006-08-25 18:40:41 · answer #1 · answered by DoctaB01 2 · 0⤊ 0⤋
Didn't they replace them with transistors? Transistors, being made of a material with special properties, work as gates. Depending on the signal being input it either allows the voltage to pass or not with varying resistance. This is where you get your 0 or 1, 0 being ground, 1 being around 5 volts depending on the circuit.
2006-08-26 01:47:20 · answer #2 · answered by Soscan 2 · 0⤊ 0⤋