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1. Create a truth table for the following functional description. You are buildi

ID: 3928781 • Letter: 1

Question

1. Create a truth table for the following functional description. You are building a circuit which will output a 1 when the three of the four circuit inputs are equal. 2. Create the Karnaugh Map for this circuit. 3. Create a OrCad project with a schematic, page and simulation for this circuit. This means you will
have to build a stimulus file in order to test the circuit.
4. Create the truth table and k-map for a circuit which outputs a parity bit based on the values of the 4 inputs.
5. Add a new schematic folder to your project. Add a new page and using part 7486, build the circuit and simulate it. You may need to build a stimulus file with which to test your circuit.
NOTE: You may encounter an error that says something along the lines too many parts. If you see this error you need to consider how you can simplify the circuit.

Explanation / Answer

Truth Table
3-input exclusive-OR gate
3-input Ex-OR Gate
C   B   A   Q
0   0   0   0
0   0   1   1
0   1   0   1
0   1   1   0
1   0   0   1
1   0   1   0
1   1   0   0
1   1   1   1