1、 声光显示智力竞赛抢答器声光显示智力竞赛抢答器 摘要摘要：随着电子技术的飞速发展，基于单片机的控制系统已广泛应用于工业、农业、电力、电子、智能楼 宇等行业，微型计算机作为嵌入式控制系统的主体与核心，代替了传统的控制系统的常规电子线路。同时 楼宇智能化的发展与成熟，也为基于单片机的照明控制系统的普及与应用奠定了坚实的基础。 电子智能抢答计分器在抢答过程中，为了知道哪一组或哪一位选手先答题，必须要设计一个系统来 完成这个任务。如果在抢答中，靠视觉是很难判断出哪组先答题。利用单片机系统来设计抢答器，使以上 问题得以解决，即使两组的抢答时间相差几微秒，也可分辨出哪组优先答题。抢答组数可以在八组以内任
2、意使用， 本系统设计为模块形式采用九针插头进行连接， 系统工作原理本系统采用 AT89S51 单片机作为核 心。控制系统的五个模块分别为：单片机最小系统（六位并行数码显示、4*4 矩阵式键盘）、显示模块、 显示驱动模块、抢答开关模块、音乐音频输出模块。 关键词：关键词：单片机；矩阵式键盘；显示；驱动；抢答 Abstract：With the rapid development of electronic technology, the control system based on SCM has been widely used in industry, agriculture, elect
3、ricity, electronics, intelligent buildings, industry, micro-computers embedded control system as the main and core, instead of the traditional control System of conventional electronic circuits. At the same time the development of intelligent buildings and maturity, but also based on the lighting co
4、ntrol system MCU and popularity of application laid a solid foundation. Points for electronic smart Qiangda Qiangda in the process, in order to know which group or which one player to answer, we must design a system to complete this task. If the Qiangda, rely on the visual is very difficult to determine which group to answer. SCM system used to design Qiangda, bringing the above problems are resolved, even if the two groups Qiangda the difference in time a few microseconds, which can also b
