Multiple choice

The simplest half-adder design incorporates which of the following gates for the sum operation?

  1. AND

  2. OR

  3. XOR

  4. NOR

  5. NAND
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The simplest half-adder design, pictured on the right, incorporates an XOR gate for S and an AND gate for C. With the addition of an OR gate to combine their carry outputs, two half adders can be combined to make a full adder.

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