毕业设计（论文）-基于51系列单片机教学实验板硬件设计.docVIP

51系列单片机教学实验板硬件设计 摘要 51系列单片机教学实验板既是一块用户实验板，又是一种功能强大而实用的单片机开发调试工具。 它与传统的教学实验板相比有如下的优点：（1）价格低廉。（2）使用简单方便，只要有带RS232串口的PC机就能进行实验。（3）功能全，基本上具备单片机常用的接口，如数模转换、模数转换、存储器、LED数码管显示、键盘人机接口、并行接口、串行接口，等等。 采用本仿真开发实验板，可使初学者迅速掌握单片机原理及应用，熟悉汇编语言、甚至单片机C语言。用本仿真开发实验板，对用户源程序进行实时在线调试，可极大地缩短单片机应用系统的开发时间。 关键词:单片机;实验板；接口电路；汇编语言 The hardware designed of 51 serial single chip processor teaching experiment board ABSTRACT 51 serial single chip processor teaching experiment board is a user experiment board, and also a powerful and practical single chip processor develop and debug tools. Compared with traditional teaching experiment board it has following advantages :( 1) Cheap. (2) It is simple and convenient to use , so long as can carry on the experiment with a PC with RS232. ( 3) With complete function, possess the common user interface of the basic single chip processor, the ADC block, the DAC block, the memory , HID(Human Interface Device, such as the LED and the key board) , parallel interface, serial interface , and so on. With this experiment board, the beginners can easily to grasp the principle and application of the MCU,be familiar with assemble languages , even the C51 languages. The character of on system debug can shorten the time to study Develop experiment board with emulation this, carry on to user source program real-time to debug online, can shorten construction period of the application system of the single chip processor greatly. Key words: single chip processor; experiment board; interface; assemble languages 目 录 中文摘要 英文摘要 0前言．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．1 1硬件电路设计．．．．．．．．．．．．．．．．．．．．．．．．．．2 1.1 仿真实验板的概况．．．．．．．．．．．．．．．．．．．．．．．2 1.2 仿真实验板的资源．．．．．．．．．．．．．．．．．．．．．．．2 1.3 电路原理图说明 ．．．．．．．．．．．．．．．．．．．．．．．4 1.3.1单片机最小系统的电路说明 ．．．．．．．．．．．．．．．．．．4 1.3.2 模数转换器ADC0809的接口电路．．．．．．．．．．．．．．．．6 1.3.3 数模转换器DAC0832的接口电路．．．．．．．．．．．．．．．．7 1.3.4 并行接口芯片8255A的接口电路．．．．．．．．．．．．．．．．8 1.3.5 数据/程序存储器HM62256．．．．．．．．．．．．．．．．．．． 9 1.3.6 动态LED显示与键盘．．．．．．．．．．．．．．．．．．．．．10 1.3.7 蜂鸣器驱动电路．．．．．．．．．．．．．．．