Q3/ A- the four inputs to a circuit ABCD represent Excess-3 code design the circuit so that the output Z is 1 if the decimal number represented by the inputs is exactly divisible by 3. Assume the only...

Extracted text: Q3/ A- the four inputs to a circuit ABCD represent Excess-3 code design the circuit so that the output Z is 1 if the decimal number represented by the inputs is exactly divisible by 3. Assume the only valid digits occur as input. Design circuit used: s occur 1- Logic gates 2- NAND only 3- Multiplexer 4- DeMultiplexer В- 1- show a way of building four bit binary (ABCD) to Gray (XYZW) converter 2- Form 32:1 multiplexer used 4:1 multiplexer and logic gate