Abstract
Present paper's thesis is 6 groups vie to answer the first design. Lives day by day richly along with the people, vied to answer first has walked into people's life, had been known very well gradually by the people. Has the widespread application in some association's knowledge competition, can it rapid, which contestant distinguish to press down first objectively vies to answer the first key, strengthened competition's fairness greatly, more comprehensive has manifested contestants' strength, increased the contestant and audience's interest, has brought very big convenient to the people. But along with science's and technology's unceasing development, takes the master-control unit by the monolithic integrated circuit to vie to answer first, occupied the main status. In function aspect, comparatively speaking, also increased many; In the circuit design aspect, has achieved the electric circuit simply convenient. This 6 groups digit vie to answer the first design concept is the software and hardware union, take the monolithic integrated circuit as the foundation, the assembly program is the core. Vies to answer first has vies to answer the first function, demonstrates the function, vies to answer the first time limit, the answer time limit, the time setting, the buzzing warning. Key word: Vies to answer first; Display circuit; Alarm circuit;
