Introduction - If you have any usage issues, please Google them yourself
Needs to be done to help a friend curriculum design, the function of design is: Moderator press the Start button, and within 10 seconds if no one Answer, horn items, and to stop the answer, the Answer scrapped, if someone in Answer 4, first Answer success of lights, other people and then null and void (except for host by reset), also showed groups, Answer time was 10 seconds of overtime to answer invalid.