Nose Poke Circuit

Just finished my nose poke circuit.  It consists of a beam break that triggers an notification LED to come on and toggles output state.

UPDATE:

Turns out that the transistor for the Poke Notify LED sucked current away from the output, reducing the "high" signal voltage sometimes to below TTL levels.  Replacing the transistor with a mosfet (in this case an AND gate) solved the issue.  Here is the new circuit which uses the AND gate to drive both the TTL output and the Poke Notify LED.