Semiconductors are materials that sometimes conduct electricity, and sometimes don’t, and you can control when they do and when they don’t. So you can make a tiny patch of semiconductor material and attach 3 wires. When you “turn on” the control wire, it can allow or block electricity to flow between the other two wires, like turning on and off a light switch.
Do you want to know how that effect happens at the electon level, or how you can chain a bunch of those single “transistors” to make logic circuits?
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