Active - Low/High

[ravenprp]

Hi,

if i have an active low IC, a 0 is needed to enable the chip.

lets say i have a 4 to 16 line demultiplexer... if the hex is 3, i will get an output of a 0 because A3A2A1A0 = 0011. now, the rest of the outputs will be "1". if I wanted to construct some more logic after that, a "1" is still considered a higih and a "0" is still considered a low right?

[berkeman]

Yes. High is still high, and low is still low. It's the True and False aspect of the logic that changes for active low versus active high.