Before microchips and transistors took over, what fragile glass components controlled electrical current in computers?
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Early computers relied on vacuum tubes to control electricity, but they were bulky, consumed massive amounts of power, and burned out frequently like light bulbs. The transition to solid-state microchips made computers thousands of times smaller, faster, and far more reliable. Photo: Stefan Riepl (Quark48), Wikimedia Commons, CC BY-SA 2.0 de.
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Source: Wikipedia (CC BY-SA)
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