Digital competition responder design
To design a can accommodate four groups of digital responder, calls for verliog design, each group have a button for the use of vies to answer first, vies to answer first instruments have a first signal identification and latch function, make the button doesn't work unless the first vies to answer first; Set a host "reset" button, the host after reset, start vies to answer first, after the first signal to identify latch circuit for signal, responder groups with indicator light shows that the speaker sound, set the foul circuit, the vies to answer first and timeout answer (three minutes, for example) in advance group of honking warning shots, and the category display circuit shows a foul group, set up a scoring circuit, 10 points, each group began to preset by the host scoring, answer a plus 1 minute, wrong a minus 1 minute,