Integrated Circuit (IC) Chips
An integrated circuit, or microchip, is a set of electronic circuits on one small flat piece of semiconductor material, usually silicon.
Components: Transistors, Resistors, Capacitors, Diodes. Process: Ingot -> Wafer -> Lithography -> Etching -> Doping -> Packaging.
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🧒 Explain Like I'm 5
Imagine a city with millions of tiny light switches and wires. Instead of building this city across hundreds of miles, an [integrated circuit](/en/terms/integrated-circuit) is like shrinking that entire city down so it can fit on a single postage stamp. It's 'integrating' everything into one tiny piece.
🤓 Expert Deep Dive
Technically, IC fabrication involves 'Photolithography', where light is used to etch complex patterns onto a silicon wafer. The industry is currently in the 'Angstrom Era', moving beyond 'Nanometer' scaling. A major challenge is 'Quantum Tunneling', where transistors become so small that electrons simply jump across them even when they are turned 'off'. To solve this, manufacturers are moving to 'GAAFET' (Gate-All-Around Field-Effect Transistor) designs. The supply chain for ICs is the most complex in human history, involving machines from the Netherlands (ASML), software from the USA (Cadence), and fabrication in Taiwan (TSMC).