本设计主要利用单片机AT89C51作为核心元件，利用3组4位共阳极的数码管作为显示器件，以C语言作为编程语言，在Protues和Keil搭建的软件仿真平台下进行仿真，本设计包含了AT89C51系列单片机的最小系统的构成，同时在此基础上扩展了一些实用性强的外围接口，可以进一步了解译码器74LS247的应用，LED七段数码管的结构和工作原理，主要实现了计时和显示A/B队的分数，并能及时进行加分，减分，鸣笛警示等功能。
系统设计完成后应有成本低廉、性能稳定、高准确度显示、操作方便且易携带等特点
This design mainly uses the MCU AT89C51 as the core component, uses 3 sets of 4 bit common anode digital tube as the display piece, C language as the programming language, and simulates under the software simulation platform built by Protues and Keil. This design contains the smallest system structure of the AT89C51 series single chip microcomputer. At the same time, some useful peripheral interfaces are extended on this basis. One step to understand the application of the decoder 74LS247, the structure and working principle of the LED seven segment digital tube, mainly realizes the timing and display of the score of the A/B team, and can carry out the functions of adding points, subtraction, whistle warning and so on in time.
After the completion of the system design, it should be characterized by low cost, stable performance, high accuracy display, convenient operation and easy portability. (2018-03-31, Proteus, 359KB, 下载2次)