摘要
早期的抢答器主要通过模拟电路、数字电路或者两者相结的方式来制作,其成本较高、布局繁琐,功能单一。本文采用AT89C51单片机作为主控芯片设计一个带数码显示的16路抢答器,电路主要包括主体部分和扩展部分。主体部分由优先编码电路,锁存器和译码电路三部分组成,扩展部分由定时电路和译码电路两部分组成。该抢答器集计数,报警,抢答等功能于一身,并且成本也较低,结构简单,适用于很多中小型场所。
In early time, the responder mainly knots through the analog circuit, digital circuit and analog circuit and digital circuit method to make the responder. This approach has a high cost, and the layout is more complicated. This time it adopts AT89C51 to design a digital vies to answer first with a 16 path display. It has counting function, shows contestant number and adjusts the answering time function.
出处
《科技视界》
2014年第10期95-95,135,共2页
Science & Technology Vision
关键词
单片机
16路
抢答器
计时
调整
Single chip microcomputer
16 Road
Responder
Timing
Adjust
