Eli5: How are logic gates made?

Question

Logic gates such as NAND can create other logic gates, but how are the very basic ones made and mass produced?

In: 4

Answer 1

NAND and other logic gates are made out of transistors. They’re almost always made on a silicon wafer as part of a ‘chip’ (multiple transistors on a single piece of silicon), but they don’t have to be.

In fact, you can make your own NAND gate from two discrete transistors and a few resistors:

https://www.101computing.net/creating-logic-gates-using-transistors/