I have a project w/ a smaller AVR and I need to conserve I/O pins. There are four outputs that will be used to control analog switches. Also there will be an LED corresponding to each output to show if the analog switches are activated. Instead of using eight outputs for the control (4) and LED's (4), is it common practice to tag the LED onto the control outputs on the 'hardware' side using a transistor to drive them right off of the control lines like in the pic attached?
Joined: Thu. Feb 28, 2013
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