Decoder logic using a NAND gate

Thread Starter

sealpuncher

Joined Oct 17, 2011
2
Hi there. I'm so lost right now. For my prelab I'm supposed to draw a schematic using a 3-8 decoder and an 8 input NAND gate to implement the minterm list (0,1,3,5,7) If I was given the decoder and an OR gate I could do this pretty easily but the NAND gate completely throws me off. I really have no idea what I'm supposed to do. I know that each output on the decoder corresponds to each minterm number and that a normal OR gate would check to see if one of the minterms is high or not.

Help would be appreciated..
 

Georacer

Joined Nov 25, 2009
5,182
Could it be that your decoder has an active LOW output? That would allow you to use the NAND gate in the same manner as an OR gate with an active HIGH decoder.
 

Thread Starter

sealpuncher

Joined Oct 17, 2011
2
Yeah I just figured out from carefully reading a note in my textbook haha. Thanks though. PROBLEM SOLVED Now I can play starcraft. College...
 
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