范文编号:DZXX245 范文字数:8323,页数:31 摘 要 本文介绍了用单片机AT89S51及外围接口电路实现的抢答系统,当电路处于正常工作状态下,抢答操作完成后,能通过数码管直观地显示抢答成功的选手号码。本系统采用单片机AT89S51作为核心器件,按键作为抢答信号的输入,同时扬声器进行发声提示。为了确保抢答的有效性,还实现了防止抢答违规抢先操作的功能,并能实现按键锁定的关闭操作。 ABSTRACT This article describes Single-chip AT89S51 and peripheral interface circuits answer system. when the circuit is in normal working condition, after the successful operation through an intuitive digital tube display answer number of successful players. The system uses a single-chip AT89S51 as a core device, the use of buttons as the input signal, and speakers for voice prompts.In order to ensure the effectiveness of answer, answer device also has to prevent violations of the functions of the first operation and the achievement of key lock closure operation. 目 录 摘 要 I
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