智能巡线绕障小车的设计，采用51单片机，超声波测距。

实时时钟芯片DS1302采用串行接口，只需3根引脚便可以完成操作，其使用非常方便。这里采用AT89S52单片机作为外部微处理器，来对DS1302进行控制-Real-time clock chip DS1302 serial interface, only three pins will be able to complete the operation, its use very convenient. AT89S52 microcontroller used here as an external microprocessor to control of the DS1302

利用52单片机通过8254定时器实现控制电机的PWM调速程序，可实现开始，停止，加速，减速。-8254 through the use of 52 single-chip motor control timer PWM speed control process, can realize the start, stop, acceleration, deceleration.

dds中文资料，从原理入手，交你如何去设计dds。-dds Chinese information, starting from the principle of paying you how to design dds.

RF905 200米无线数据收发模块C语言程序-RF905 200 meter wireless data transceiver

本程序实现了MSP430读写SD卡，MSP430对fat文件系统的操作-This program implements MSP430 to read and write SD card, MSP430 to the fat file system operations

通用串口通讯,C51程序源代码 通用串口通讯,C51程序源代码 -Universal Serial communications, C51 source code generic serial communications, C51 source code

灭火控制盘（XMP4-2） -Fire control panel (XMP4-2)

单片机复位电路的可靠性设计,介绍了在单片机应用中需要用到的一些比较安全的复位方式-The reliability of single-chip reset circuit design, introduced in the single-chip applications need to resort to some relatively safe ways reset

硬盘接口线的定义，作单片机的-line drive interface definition, look for SCM

ST52单片机控制液晶显示的程序，含1602液晶的数据手册及字符手册，对初学者很有帮助。-Single-chip LCD ST52 control procedures, including data from 1602 LCD manual manuals and characters, very helpful for beginners.