ericgibbs Well-Known Member Most Helpful Member Jun 24, 2010 #2 beakie said: Any idea why this won't work? I would expect it to do something?? View attachment 43907 Click to expand... hi, An open input on pins A,B,C,D will assume a logic high, the decode for all high is BLANK led. Connect A,B,C,D to 0V and the LED should display '0' Attachments AAesp05.gif 91.6 KB · Views: 177 Last edited: Jun 24, 2010
beakie said: Any idea why this won't work? I would expect it to do something?? View attachment 43907 Click to expand... hi, An open input on pins A,B,C,D will assume a logic high, the decode for all high is BLANK led. Connect A,B,C,D to 0V and the LED should display '0'
beakie New Member Jun 24, 2010 #4 OK. Next I am trying to connect the above to 4051. I don't know what connect Pin 3 to. I presume high? I tried high (and low).... and then connected A, B and C to high in an attempt to get something to happen but nothing did. Any ideas? (cheers for ya time btw. it is much appreciated)
OK. Next I am trying to connect the above to 4051. I don't know what connect Pin 3 to. I presume high? I tried high (and low).... and then connected A, B and C to high in an attempt to get something to happen but nothing did. Any ideas? (cheers for ya time btw. it is much appreciated)