Why can an AND Gate not become and EX-NAND Gate.
T TonyCollins Sep 12, 2011 3 Joined Sep 12, 2011 Messages 3 Mar 27, 2012 #1 Why can an AND Gate not become and EX-NAND Gate.
(*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator Jan 21, 2010 25,510 Joined Jan 21, 2010 Messages 25,510 Mar 28, 2012 #2 Firstly, how do you convert a OR gate into a AND gate? Now do the same thing to an XOR gate and see what happens (It should logically become EX-AND, right?) See what happens.
Firstly, how do you convert a OR gate into a AND gate? Now do the same thing to an XOR gate and see what happens (It should logically become EX-AND, right?) See what happens.
GonzoEngineer Dec 2, 2011 321 Joined Dec 2, 2011 Messages 321 Mar 28, 2012 #3 (*steve*) said: Firstly, how do you convert a OR gate into a AND gate? Now do the same thing to an XOR gate and see what happens (It should logically become EX-AND, right?) See what happens. Click to expand... LMAO
(*steve*) said: Firstly, how do you convert a OR gate into a AND gate? Now do the same thing to an XOR gate and see what happens (It should logically become EX-AND, right?) See what happens. Click to expand... LMAO
GreenGiant Feb 9, 2012 842 Joined Feb 9, 2012 Messages 842 Mar 28, 2012 #4 I may be exposing some obvious logic here but wouldn't an EX-NAND act exactly the same as a NAND? only off when all inputs are high? or would it only be on when no inputs are high?
I may be exposing some obvious logic here but wouldn't an EX-NAND act exactly the same as a NAND? only off when all inputs are high? or would it only be on when no inputs are high?
(*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator Jan 21, 2010 25,510 Joined Jan 21, 2010 Messages 25,510 Mar 28, 2012 #5 It depends on your definition of exclusive NAND. If one assumed that XOR could be turned into XAND by inverting the inputs and outputs (a la De Morgan), an XNAND would be that with the output inverted. Did you try writing down the truth tables for it. I promise you that you'll be surprised.
It depends on your definition of exclusive NAND. If one assumed that XOR could be turned into XAND by inverting the inputs and outputs (a la De Morgan), an XNAND would be that with the output inverted. Did you try writing down the truth tables for it. I promise you that you'll be surprised.
W War_Spigot Feb 20, 2012 43 Joined Feb 20, 2012 Messages 43 Mar 29, 2012 #6 XAND is always false, and XNAND is always true. I think turning an AND gate into a XNAND would involve connecting both inputs to +V. To be honest, I exclusively use XAND and XNAND gates in my logic designs...
XAND is always false, and XNAND is always true. I think turning an AND gate into a XNAND would involve connecting both inputs to +V. To be honest, I exclusively use XAND and XNAND gates in my logic designs...