1 Create a truth table for the following functional descript

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.

Solution

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