Which two digital logic gates are considered universal gates because any combinational circuit can be constructed solely using either of them?
Answer and explanation
Correct answer: D. NAND and NOR gates
- Step 1: NAND and NOR gates can reproduce NOT, AND, and OR Boolean functions by specific interconnection. Step 2. This allows complete digital logic processors to be fabricated using a single standard gate type. Answer: NAND and NOR gates. Why not the others: AND and OR gates cannot invert signals without separate NOT gates; XOR cannot generate standard AND without auxiliaries.
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