现代电子技术Issue(18)：124-126,3.
单片机控制的八路抢答器的设计与制作
Design and manufacture of eight-way responder controlled by single chip microcomputer
吕红娟1
作者信息
- 1. 西安科技大学 通信与信息工程学院，陕西 西安 710054; 西安铁路职业技术学院，陕西 西安 710014
- 折叠
摘要
Abstract
Responder is a priority decision circuit commonly used in quiz game of schools. An eight-way responder with time limit answer,answer in time and alarm display functions was designed on the basis of STC89C52 microcontroller. A relay is adopted in the hardware circuit to isolate the key signal and SCM signal,and improve noise immunity of the circuit. The data latches and digital driver chip are combined to improve load capacity of the circuit. According to the actual size of components, the single-sided PCB was designed with software PROTEL. The actual production and verification result show the PCB’s design is reasonable,the element insert is convenient,its operation is simple,its cost is low,and the responder can timely and accu-rately determine who is the first vier.关键词
抢答器/硬件系统/软件系统/印制板Key words
responder/hardware system/software system/PCB分类
信息技术与安全科学引用本文复制引用
吕红娟..单片机控制的八路抢答器的设计与制作[J].现代电子技术,2014,(18):124-126,3.
