Not sure if you received this email I sent on Sunday.

RC

----- Original Message -----
From: Yu, Ren Chung
To: ADLD@listserv.it.northwestern.edu
Sent: Sunday, December 07, 2008 6:49 PM
Subject: questions

Hi,

CLA
In the slides for Carry Lookahead Adder, the equations are

cin1 = Go + Po cout0
cin2 = G1 + P1 cout1 = G1 + P1G0 + P1P0 cout0
etc

Shouldn't it be this:
cin1 = Go + Po cin0
cin2 = G1 + P1 cin1 = G1 + P1G0 + P1P0 cin0
------------------------------------------------------------------------------------------

Multipliers
In the Cascaded Carry Lookahead diagram, are the four 4-bit adders CLAs as well? If not, they can be right?

There is an example of a 2x2 sequential multiplier. If we were to build a 3x3 sequential multiplier, all we'd have to do is add one of each component right? For instance, add a D-flip flop for each operand and for the sum-storage, add an AND gate, and add a FA.

Ren Chung (RC) Yu
Northwestern University 2010
Electrical Engineering
rc@u.northwestern.edu
(847) 757-4925
Received on Wed Dec 10 12:09:02 2008