设计一个可容纳四组参赛者同时抢答的数字抢答器，可判断第一抢答者并报警指示抢答成功，其他组抢答均无效。若提前抢答则对相应的抢答组发出警报。同时还具有计分功能，若抢答成功并回答正确增加1分，答错不扣分。-

Designed to accommodate a four contestants answer in the same time the number of Responder, First Responder who can determine the answer in the success and warning instructions, answer in the other groups are invalid. If the answer in advance the answer in the corresponding group is alert. It also has a scoring function, the correct answer if the answer in his success and increased by 1 point, got the wrong answer is not points.