Ok I'm designing a simply system for a three input game show buzzer. I'm thinking about using a demux chip that simply handles analog voltages like the 74hct4051. However I need to only allow the light for the first person that clicks their switch to be displayed. A microcontroller could be used for this, however I was wondering what are some simple solutions for this? Edit: Maybe I'm looking at this wrong, maybe I just need to disable the other two switches after the first output on the chip is high.