logan_dslasher Posted March 12, 2006 Author Report Share Posted March 12, 2006 here's what i did..i have a 4081 (quad 2-input AND).. pins 1,2,3 is AND1 456 is AND2 and so on.. pin7 is ground and pin14 is +9V.. I have a LED placed in pins 3&4 ('im really not sure if it should be placed there..) then I use two wires to connect pins 1 and 2 to pin14.. theoretically (my theory) is should have the LED lit. high input to pins 1&2 should produce a high, turning the LED ON, right? bu what happens is the opposite. the LED is OFF if both pins1&2 are connected to pin14' it is ON if only one is connected. what's wrong? please advise... Quote Link to comment Share on other sites More sharing options...
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