单片机实验教学系统的设计.doc

单片机实验教学系统的设计 摘 要 实验教学作为单片机教学的重要组成部分，是培养学生实践能力和创新能力、提高学生综合素质的重要环节。目前该环节整体教学效果并不理想，其根本原因是由于缺乏合适的实验器材：仿真器与实验箱的价格昂贵、操作复杂，难以普及给每个学生；而基于监控程序的实验板功能单一，大多不具备在线编程功能，不能适应现代单片机教学实验的要求。针对以上问题，本文引入了“宏晶科技公司”具有ISP/IAP功能的STC89单片机，设计开发了一套新型的单片机实验教学系统，以低廉的成本实现了高档仿真器的大多数功能。该教学系统可使初学者迅速掌握单片机原理及应用，熟悉汇编语言和C语言；用户不仅可以对源程序进行实时在线调试，而且可以将调试好的程序在线下载到单片机中，极大地缩短了单片机应用系统的开发时间。 论文主要完成了以下工作： 在分析单片机实验教学器材现状的基础上，提出一种结合单片机ISP技术和监控程序调试的方案。新方案集ISP下载、编程器、仿真器、开发板功能四合一，是一种廉价而有效的单片机实验平台。 在完成单片机实验板设计和调试的同时，开发了一种基于Keil和Proteus的软件仿真方法。通过实际硬件操作前的软件模拟过程，可解决初学者上手困难、容易损坏硬件电路等问题。 开发了一些综合性、创新性较强的实验等。新实验贴近实际项目开发，可有效拓宽学生的学习视野，提高其单片机应用的综合能力。 课题目前完成了实验教学系统的全部软件、硬件的设计和调试工作，实验板已经批量生产制作，经过小规模试用，反映良好。 关键词：单片机 实验教学 仿真器 编程器 ABSTRACT As an important section of MCU teaching, Experimentation can improve the practical and innovative student’s ability, enhance their quality of comprehensive abilities. But the training effect isn’t satisfying presently due to lacking of appropriate experiment equipment; the emulator can’t prevail for its high price and the low-cost board based on monitor program only has simplex function. So a new experiment and training system based on STC89 MCU is designed, which can realize the main function of emulator with low-cost. Students can expediently master assemble language and C language with help of the teaching system. Main completed tasks in the paper: We primarily analyze the actuality of the teaching experiment equipment; then introduced a project based on ISP and monitor program technique. The new system integrated ISP function, programmer, emulator and experimental broad with a low price. Not only we achieved all hardware and software tasks, but also introduced a virtual MCU emulate platform which is based on Proteus and Keil. The emulate platform can help students enhance their thought before the hardware operation, and then the difficulty for fresher is reduced and learning efficiency is improved. Some integrative and innovative experiments were designed, including automobile supervising ala