Number systems: bits, hex, two's complement
How digital circuits represent numbers, why hex exists, and how negatives are encoded.
Binary, boolean algebra, and logic gates — the mental model you need before VHDL.
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How digital circuits represent numbers, why hex exists, and how negatives are encoded.
Commutative, distributive, De Morgan — the identities you'll lean on when simplifying logic.
AND, OR, NOT, NAND, NOR, XOR, XNOR — and how each shows up in VHDL.
Open a tiny VHDL design, drive its two inputs, and watch the outputs in the waveform viewer.