基于LED模组多功能智能抢答器设计与制作

Design and fabrication of multifunctional intelligence answering buzzer based on LED module

采用STC89C52单片机制作多功能智能抢答器,能够实现倒计时时间和限时抢答时间设置、抢答显示、预抢记录、预抢报警、一键清零等多种功能。系统由主机和LED模组数显模块组成,主机以STC89C52单片机为主控核心,LED模组各段使用高亮度LED串、并联连接而成。同时还具有干电池与220 V市电两种供电方式。系统设计具有节能、环保、便携、实用等优点。

Multifunctional Intelligence answering buzzer made by STC89C52 singlechip can achieve multifunetions： time setting of countdown and time-limited answering, answering display, pre-answering alarm and record, clearing by pressing one key. The system consists of host and LED module. The master control core of the host is STC89C52 singlechip, and the seg- ments of LED module is composed of LEDs based on series and parallel connection. At the same time, the system uses two power supplies, battery and 220 V power supply. The system has many advantages such as energy saving and pro-environment, and is portable and practical.