7.3.5. CMOS XNOR Gate Design

Try these first

1. 1.

   What is the output of an XNOR gate when both inputs are 1?

   Hint

   Think about when the inputs are the same.

2. 2.

   How many inputs does a basic XNOR gate have?

   Hint

   Consider the basic function of binary operations.

3. 3.

   What does an XNOR gate output when both inputs are 0?

   • 0
   • 1
   • Undefined

   Hint

   Remember what you learned about the output when inputs match.

4. 4.

   True or False: The XNOR gate will output high if one input is high and the other is low.

   • True
   • False

   Hint

   Recall the truth table for the XNOR gate.

5. 5.

   If two binary numbers are compared using XNOR gates and the output is 0, what does it imply about the numbers?

   Hint

   Think about what it means when both inputs for an XNOR gate are not matching.

6. 6.

   Design a combination circuit using XNOR gates to check if three inputs A, B, and C are equal, detailing your circuit schematic.

   Hint

   Visualize how you can break down the comparison into smaller chunks with XNOR gates.