Multiple choice

A half adder is an arithmetic circuit that generates the sum of ______.

  1. 3 binary digits

  2. 2 binary digits

  3. 4 binary digits

  4. none of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A half adder is a digital circuit that adds two binary digits (bits) and produces a sum and carry output. It operates on only 2 bits at a time, unlike a full adder which handles three inputs including carry-in.