help me for homework!(electronics) - GoFuckYourself.com

HEAT · 04-26-2005, 10:48 AM

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 · 04-26-2005, 10:50 AM

What is it suppose to do ?

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

Basic_man · 04-26-2005, 10:51 AM

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

rickholio · 04-26-2005, 11:04 AM

Quote:

Originally Posted by 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.

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 · 04-26-2005, 11:06 AM

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

HEAT · 04-26-2005, 11:08 AM

Quote:

Originally Posted by rickholio

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 · 04-26-2005, 11:14 AM

Quote:

Originally Posted by rickholio

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 · 04-26-2005, 11:14 AM

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 · 04-26-2005, 11:19 AM

Quote:

Originally Posted by 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

great tip! thanks

rickholio · 04-26-2005, 11:23 AM

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.

04-26-2005, 10:48 AM	#1
HEAT Confirmed User Join Date: Sep 2003 Posts: 2,255	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. __________________ 254-282-542

04-26-2005, 10:50 AM	#2
Basic_man Programming King Pin Industry Role: Join Date: Oct 2003 Location: Montreal Posts: 27,360	What is it suppose to do ? By the way, I think you are late in your homework :P __________________ UUGallery Builder - automated photo/video gallery plugin for Wordpress! Stop looking! Checkout Naked Hosting, online since 1999 !

04-26-2005, 10:51 AM	#3
Basic_man Programming King Pin Industry Role: Join Date: Oct 2003 Location: Montreal Posts: 27,360	This is a working schema .. but what do you want to do ? __________________ UUGallery Builder - automated photo/video gallery plugin for Wordpress! Stop looking! Checkout Naked Hosting, online since 1999 !

04-26-2005, 11:06 AM	#5
HEAT Confirmed User Join Date: Sep 2003 Posts: 2,255	I can't make a distinction between 1-bit full adder and 2-bit full adder. __________________ 254-282-542

04-26-2005, 11:23 AM	#10
rickholio Confirmed User Industry Role: Join Date: Jan 2004 Location: Nor'easterland Posts: 1,914	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. Last edited by rickholio; 04-26-2005 at 11:26 AM..

04-26-2005, 11:14 AM	#8
rickholio Confirmed User Industry Role: Join Date: Jan 2004 Location: Nor'easterland Posts: 1,914	This won't give you schema, but perhaps it'll help with the concepts: http://www.cs.trinity.edu/About/The_....comp.cir.html