Q) How do i design a Full adder module with data inputs X and Y, carry input Cin, Sum output S, and Carry output Cout using:

a) a 3-8 decoder and NAND gates
b) 4 to 1 multiplexer

 

Q) How do i design a Full adder module with data inputs X and Y, carry input Cin, Sum output S, and Carry output Cout using:

a) a 3-8 decoder and NAND gates
b) 4 to 1 multiplexer

This is a place to aid you when you can not go any further in your problem, not a place to have your homework done for you.

Please attempt the problem first, using the resources you already have and come back if you get stuck after that...

-blazed

 

Make up a truth table and see if that doesn't point you in a direction.

 

i constructed a truth table and finished part (a).
I now need help with the 4 to 1 multiplxer, if there are 3 inputs what do i put for the 4th input.

Thanks for looking at my question

 

i constructed a truth table and finished part (a).
I now need help with the 4 to 1 multiplxer, if there are 3 inputs what do i put for the 4th input.

Thanks for looking at my question