In an SR latch built from NOR gates, which condition is not allowed

by

Electrical Engineering XYZ MCQs

In an SR latch built from NOR gates, which condition is not allowed:

  1. S=1, R=0
  2. S=0, R=0
  3. S=1, R=1
  4. S=0, R=1

Correct answer: 3. S=1, R=1

Explanation: This condition is not allowed in a properly functioning SR latch because it creates a situation called a “race condition” or “invalid state.” When both S and R are 1, both outputs of the latch become 0, leading to an indeterminate state. In practical terms, this creates instability and unpredictable behavior

Leave a Reply