help me for homework!(electronics)

[HEAT]

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.

[Basic_man]

What is it suppose to do ?

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

[Basic_man]

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

[rickholio]

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.

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.

[HEAT]

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

[HEAT]

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.

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

[HEAT]

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.

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

[rickholio]

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

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

[HEAT]

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

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

great tip! thanks

[rickholio]

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.