EASA Part-66 · Module 5 — 5.3 Logic Circuits · B1/B2
Objective: state the truth table and behaviour of the AND, OR, NOT, NAND, NOR and XOR gates and predict the output for any input combination.
Each logic gate turns one or two binary inputs into a single output. AND needs both inputs high; OR needs at least one; XOR needs exactly one; NOT inverts. NAND and NOR are the inverted forms — and either one alone can build every other gate, which is why they're called universal.