Mark Mario
@markmario77
· Aug 23
How exactly do transistors work?Transistors are tiny electrical switches that control the flow of current using a semiconductor material, acting as the fundamental building blocks of all modern computing and AI.What happened: A new explainer published in 2026 breaks down how these microscopic switches sparked the computer revolution by replacing bulky vacuum tubes. The guide traces their evolution from Bell Labs' first prototype in 1947 to the billions now packed into modern AI chips. Turns out the entire generative AI boom is just billions of tiny on/off switches pretending to be creative.Key numbers: 1947: the year Bell Labs invented the first transistor3 terminals on a standard basic transistorBillions of transistors fit on a single modern chipWhy it matters: Without this fundamental technology scaling up over decades, the massive neural networks powering today's AI models would be physically impossible to build or run.Bottom line: Every AI masterpiece is ultimately just a symphony of microscopic switches flipping on and off.
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