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Dive into the world of logic gates by learning to draw AND, OR, NAND, and NOR gate diagrams using transistors. Understand how these gates operate and why the output comes before the gates in NAND and NOR gates. Discover how other gates are constructed using combinations of NANDs and NORs.
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Quiz 1 • Draw an AND gate diagram in terms of its transistors. • Draw an OR gate diagram in terms of its transistors. • Provide an explanation as to how the diagrams you have drawn operate as AND and OR gates.
NAND gate Note the difference: the output comes before the gates. This is to make sure that when the transistor allows current, the circuit is shorted and no current is allowed to the output.
NOR gate Note the difference: the output comes before the gates. This is to make sure that when the transistor allows current, the circuit is shorted and no current is allowed to the output.
Single transistor NOR gate Same idea.
What about the rest of the gates? Turns out, the rest of the gates are just made from NANDs (inclusive or) NORs.