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QPages 419-421: Q35: HC Verma: Concepts of Physics - Volume 2 Semiconductors and Semiconductor Devices Pages 419-421: Q35 Solution: Show that is always 1.
Show that is always 1.
Step-by-Step Verified Solution
**Answer:** AB + ___ = 1 always.
**Step-by-Step Explanation:**
Truth table:
- A=0, B=0: AB=0, ___=1, sum=1
- A=0, B=1: AB=0, ___=0, sum=0
- A=1, B=0: AB=0, ___=0, sum=0
- A=1, B=1: AB=1, ___=0, sum=1
This is actually the XNOR function, not always 1. The correct expression for always 1 is AB + _B + A __ + ___ = 1 .
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