<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML DIR=ltr><HEAD><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"></HEAD><BODY><DIV><FONT face='Arial' color=#000000 size=2>Hi list--</FONT></DIV>
<DIV><FONT face=Arial size=2>I have an application I'm working on in which I
need to perform an exclusive OR on 4 inputs. Since I don't think anyone makes a
4-input XOR, I tried to rig something up using some CMOS chips. My first attempt
was a little too simplistic (i.e. wrong), which I didn't realize until I'd
already wired it into my application. I think my second attempt works (haven't
tried it yet, tho) but i think it might be overkill. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Go here: <A
href="http://people.msoe.edu/~schierld/temp/xor.html">http://people.msoe.edu/~schierld/temp/xor.html</A> to
see my two ideas.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>My question is: the second idea is pretty much a
literal definition of an XOR gate, but I wonder if there are any trick ways to
make one of these with fewer chips. Any thoughts you might have would be
appreciated. thanks!</FONT></DIV></BODY></HTML>