abstract
Along with modern entertainment program and other game link's need, also for more perfect program's tense atmosphere and audience's interaction, therefore presented the multi-channel intelligences to vie to answer first, this vied to answer first basic function: It may simultaneously supply 8 contestants or 8 teams attends the competition, their serial number respectively is I0~I7, vies to answer the first button respectively with one, button's serial number corresponds separately with contestant's serial number, respectively is S0~S7.
key words:74LS48 RS trigger 74LS192 555 timers