isp_w78e516_mcu.zip：

介绍了用RS-232串口进行开发的过程，对于刚涉及串口编程的开发人员有一定帮助-Introduction by RS-232 serial port to carry out development process, for serial programming just related to the development of staff has a certain extent, help

本系统利用凌阳SPCE061A单片机原理，设计了一种双向超声测距系统，与一般的超声测距系统相比，除具备一般测距系统具有的功能外，该系统还具有低功耗、高精度、工作可靠、人机交互界面友好等优点。由于超声传播速度与环境温度相关而采用声速温度自动补偿技术，根据测量不同距离和不同的反射材料，回波信号强度从几毫伏到几百毫伏变动，因而采用两片AD603组成AGC自动增益控制电路与低噪放大器 NE5532 级联使用的方式组成超声检测信号放大电路，提高超声检测系统的检测范围和系统的适应性，使的系统获的较好的整机性能。由于超声波的传播距离与它的振幅成正比，为了使测距范围足够远，可对单片机输出方波信号进行功率放大后再加在超声波换能器上，因而先由三极管8050进行功率放大，再通过由六非门CD4049接成推挽方式的驱动电路将振荡信号的幅度放大一倍，再接到超声波换能器，从而增加了超声波的传播距离，扩大了测距范围。-err

用 AT89C51、LED 数码管、按键、二极管等部分构成，能实现时钟日历的功能：能进行时、分的显示。也具有时钟，定时时间的设定，实现三路开关定时输出等功能。-With AT89C51, LED digital tubes, buttons, diodes and other components, to achieve clock calendar function: to carry out, the sub-display. Also has a clock, timer time setting, the realization of three-way开关定时output functions.

Buses are a powerful and efficient modeling construct. Using them to produce optimal code is dependent on following a basic set of best practices. This document provides a set of patterns that can be followed the best results

profibus通信协议，基于ATmega64，需要协议芯片SPC3的支持-PROFIBUS communication protocol, based on the ATmega64, need the support of SPC3 chip agreement

Proteus中89c52串口通信原理图和源程序。-Proteus which 89C52 Serial Communications schematic and source code.

在达盛实验箱下的lcd单片机显示，两行国标汉字，爱好者可以好好学习一下-Tat Shing lcd under experimental single-chip boxes show two lines of Chinese characters GB, fans can learn about

x25045的读写源程序，可以读x5045和写x5045，软件模拟spi总线协议。-x25045x5045x5045spi

非接触式IC卡设计编程的样例-non-contact IC card design Programming Example

网上down的一个电机控制的，据说很吧u错啊，有兴趣可以看下啊。-Down a line of motor control, it is said very错啊it u interested ah can facie.