设计高效抢答器：AT89C51单片机实现的八路抢答系统-学位论文

本论文主要讨论了一种基于AT89C51单片机的八路抢答器设计。抢答器作为一种工具，在各种智力和知识竞赛场合得到广泛应用。然而，现有的抢答器使用频率较低，有的制作复杂，有的可靠性低。因此，本设计旨在解决这些问题，以满足单位、学校等需要经常举办抢答活动的场合。设计的抢答器具有八路抢答的功能，并且能够根据需要设定限时回答的功能。本设计利用AT89C51单片机及外围接口实现抢答系统，通过单片机的定时器/计数器功能，使得系统能够正确地进行计时，并且可以显示时间。同时，系统能够实现抢答的有效性判断、倒计时显示、按键锁定等功能。本设计的关键词包括AT89C51、LED、数码管、抢答器、计时。 Overall, this thesis mainly discusses a design of an eight-channel buzzer based on the AT89C51 single-chip microcomputer. As a tool, the buzzer has been widely used in various intellectual and knowledge competitions. However, the existing buzzers have low frequency of use, and some are either complex to make or unreliable. Therefore, this design aims to solve these problems, in order to meet the needs of units, schools, and other venues that need to hold buzzer activities frequently. The designed buzzer has the function of eight-channel buzzer and can set the time-limited answer function according to the needs. This design uses the AT89C51 single-chip microcomputer and peripheral interfaces to implement the buzzer system. By using the timer/counter function of the single-chip microcomputer, the system can correctly time and display the time on the digital tube. At the same time, the system can determine the validity of the buzzer, display the countdown, and lock the keys. The keywords of this design include AT89C51, LED, digital tube, buzzer, and timing.