>I am trying to sketch a circuit that has four select push buttons for
>inputs, and four seperate digital outputs.
>I want to push a button and latch that output, and unlatch any other
>selected output which was previously selected.

It is possible to extend the R-S latch circuit to do this. I have seen =
this done for three inputs, and it would not be too hard to extend it =
further to 4 inputs. You end up with a gate for each output, and only =
one is on at a time.

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