用单片机产生Pwm来控制电机的硬件和软件设计，欢迎下载！

北京大学的单片机教程，ppT文件，要学的可以自学，-Peking University microcontroller tutorials, ppT documents, to learn to self-learning,

44键盘多模块演示程序，使用双向双次键扫描技术LCALL INKEY 双向双次键扫描-keyboard module demonstration, the use of the bi-directional bonding time scanning technology LCALL INKEY meeting of the bi-directional scanning Bond

HID sample code for HOLTEK

手把手教你学单片机（第2版）实验程序，原书代码，内有部分是我练习时的代码，可以参考。-Taught you how to learn SCM (version 2) protocol, the original letter code, in some code when I practice, you can refer.

HT1621中文资料，文档为翻译内容，不保证资料的完全正确性-HT1621 Chinese information, the contents of the document for translation, does not guarantee the complete accuracy of information

用于分析各种点阵字库结构和程序，对嵌入式或单片机开发很有帮助。-Font used to analyze the various lattice structures and procedures to develop single-chip embedded or helpful.

S3C2440 arm9芯片上RTC的测试程序，可以测试RTC是否正确运行，以及能对RTC进行时间设置。-RTC chip S3C2440 arm9 test procedures to test whether the RTC correctly, and be able to set the RTC time.

ST7920液晶驱动芯片初始化程序以及字符工作模式操作，图片模式操作-ST7920 LCD driver chip initialization procedures, as well as character mode of operation, picture mode operation

关于嵌入式PS2键盘的原理图，基于51单片机的工控键盘。很实用，包括程序，基于Keil的软件程序-On the embedded PS2 keyboard schematics, single-chip microcomputer-based industrial control keyboard 51. Very practical, including the procedures, the software program based on the Keil

usb转串口单片机固件程序，能实现usb-232的双向转换-usb to serial single-chip firmware, usb-232 to achieve the two-way conversion