八路数字抢答器毕业设计

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1、I 摘 要 在智力竞赛等场合，常需要一种反应灵敏、显示方便的抢答装置。在对数字集成电路研究的基础上，设计了一种八路数字抢答器，该抢答器包括抢答、编码、优先、锁存、数显、复位及报警电路。本设计采用 CD4511 芯片来实现译码锁存和 led 驱动功能，通过蜂鸣器实现报警功能，并采用 220V 转 +5V 转换电路为系统供电。软件仿真和硬件实验的结果表明了该系统能实现八路抢答器的功能，且具有反应灵敏、操作简便、实用性强等特点，具有一定的实用价值。 关键词： 抢答器；编码；译码；锁存 II Abstract In the quiz and other occasions, often require

2、 a responsive, easy to display and answer device. Based on the study of digital integrated circuits Designed an eight-way digital Responder, the Responder include Responder, coding, priority, latches, digital display, reset and alarm circuits. The design adopts CD4511 chip to achieve decoding latch

3、and led driver functions, achieve alarm function by the buzzer and uses 220V switch +5 V conversion circuit to power the system. Software simulation and hardware experimental results show that the system can achieve eight Responder functionality, and has a responsive, easy operation, practical features, has some practical value. Key words : Responder； coding； decoding； latch