基于AT89C51的八路抢答器技术总结.docVIP

电子综合设计实验报告 题 目 综合电子技术 8路抢答器 学生姓名 学 号 系 部 计算机与工程 指导教师 职 称 年 月 电子综合设计实验报告评审表 姓 名 专业 班级 学号 题 目： 8路抢答器 评 审 意 见 成 绩 签名： 评审时间： 年 月 日 内容摘要ABSTRACT With the development and popularization of science and technology , more and more kinds of competitions , including Responder role has become increasingly important . This paper designed to AT89C51 microcontroller as the core of eight Responder , using a direct digital display indicator, automatic latching display the results, and automatically resets design ideas that can answer depending on the input signal, after the MCU control processing and produce different with the input signal corresponding to the output signal , and finally through the LED digital tube display the corresponding ones , even if the difference in time between the two groups to answer in a few microseconds , which can distinguish the pressed key priority groups , taking advantage of SCM system structure is simple , powerful, good reliability, practical features . The design is based on Responder as a starting point . By taking into account the need to set the limit to answer function, using 89C51 microcontroller and peripheral interface Responder system, using single-chip timer / counter timing and counting principle, the software and hardware organically combined , making the system can correctly for a time, while enabling digital tube display time correctly . Keyboard to do with the switch output , speakers from tips. While the system can be achieved : In the answer , the only answer is only valid after the start , if before the start Responder Responder as invalid ; full, the system automatically resets and Master Chronograph forced reset ; keys locked in the active state , the button is not illegal , timing , scoring functions. KEY WORDS Responder ；chip ；LED digital display ；tube timer ；counter Speaker 目 录1 设计任务要求 1 1.1 设计任务 1 1.2 设计要求 1 2 方案论