help me for homework!(electronics)
 

do you think this is correct 2-bit full adder???
(it's a Full Adder logic that I found from google but not sure it's '2-bit' full adder)

I have to design it with MAX+pluse II and demonstrate it to prof tomorrow.
:helpme

http://www.lovelyjenna.net/logic.gif

What is it suppose to do ?

By the way, I think you are late in your homework :P

This is a working schema .. but what do you want to do ?

No, it's not. All you have to do is follow the logic. If it were an adder, S1 would have to be affected by inputs on A2/B2, and it quite clearly is not.

I don't know what that is but it sure as hell isn't an adder.

Run through the states (plug in 0000 through 1111 on the A1/2 B1/2 inputs) and you'll see what I mean.

I can't make a distinction between 1-bit full adder and 2-bit full adder. :(

thanks for your answer.
I'm reading my textbook again..

hm...
this page says it's a full adder.
http://www.vuw.ac.nz/scps-students/t...week4/fadd.htm

This won't give you schema, but perhaps it'll help with the concepts:

http://www.cs.trinity.edu/About/The_....comp.cir.html

http://www.cs.trinity.edu/About/The_...comp.cir10.gif
great tip! thanks :thumbsup

Wait, nm. My bad. I wasn't paying attention to the labels on the left... A inputs and B inputs are mixed... the low bits of both a and b are at that top XOR... this is indeed a 2 bit adder, with S3 representing the carry bit.