通过单片机对HT9200进行控制访问，实现电话的DTMF拨号功能

RS485通信的深层细节，逐步深入分解讲解。-RS485 communication

高速DDS芯片AD9851的应用程序，基于AVR128单片机最快可产生180MHZ正弦波（对PCB的要求很高！）

RJ45接头的Protel PCB封装库-RJ45 connectors package Protel PCB Library

热敏电阻，+adc0804测量温度，精确度到0.3摄氏度，本人第一个作品-Thermistor,+ adc0804 temperature measurement accuracy to 0.3 degrees Celsius, I was the first work

MP3基于AVR的源程序，包含文件系统以及SD卡的驱动程序，并且有音频解码程序-AVR based MP3 source code, including file system, as well as SD card driver, and there are audio decoding process

TS-1620原理图和程序 TS-1620原理图和程序-TS-1620 schematic diagram and procedures for TS-1620 schematic diagram and procedures

该设备是一款基于AVR mega16L单片机的电子书阅读器，它除具有传统的阅读电子资源功能外，还能通过PS2接口与PC键盘连接，使用普通PC键盘输入信息，进行文本录入；使用LCD12864液晶作为显示器，它还可以用VB专门为之编写的下载软件通过串口下载TXT格式的文本资源。电子书资源存储在AVR公司生产的AT45DB021B闪速存储器，它有2M存储空间，可满足一般用户需要，当然也可升级为大容量存储器。 该设备功能强大，将电子书阅读器发挥到了极致，能满足用户特殊需要。 -The device is a single chip based on the AVR mega16L e-book reader, which in addition to the traditional functions of reading electronic resources, but also through the PS2 interface to connect with the PC keyboard, use an ordinary PC keyboard input information, the text input use LCD12864 LCD as a display, it can be prepared by specialized VB download software through the serial port to download TXT format text resources. E-book resources are stored in the AVR produced AT45DB021B flash memory, it has 2M storage space to meet the needs of general users, of course, can also be upgraded to a large-capacity memory. The device is powerful and will play an eBook reader to the extreme, and to meet the special needs of users.

这是一本单片机的初学者教程，简单易学。是单片机初学者的首选-This is a tutorial for beginners SCM, easy to learn. Is the first choice for beginners Singlechip

压缩包里包括的５１的Ｃ与汇编的混合编程，并附有详细的稳当说明，想要深入了解混合编程责不要错过-Compression bag included in the compilation of 51 C with a mixture of programming, together with a detailed description of the sound, you want a deeper understanding of mixed programming Select Do not miss