So with the DDS

Elan eKTP8733N单片机开发程序，用于驱动I2C接口。在Elan 公司开发环境中使用。-Elan eKTP8733N single-chip development process, used to drive I2C interface. Elan has developed in the environment.

AT8091 C51 4*4键盘 程序例子，配电路图-AT8091 C51 4*4 Keyboard example

单片机linbus通讯-Single-chip communication linbus

５１单片机综合设计开发事例-51 Single-chip integrated design and development examples

AT90S8515控制4线两相步进电机。想做AVR控制步进电机的网友可以看看。-AT90C8515 control 4 wire 2 phase stepping motor. AVR control stepping motor .

51单片机收发短信的程序，W77e58单片机外括16kram就行-51 SCM SMS procedures, including W77e58 SCM 16kram on foreign firms

著名的CS5463抄表模块，带无功计算。-CS5463 well-known meter reading module, with the calculation of reactive power.

单片机智能抢答器设计论文，以及设计硬件图和附录-Single-chip intelligent design thesis Answer，And design the hardware chart and Appendix

基于80C51单片机源码公开的操作系统1.20.2 版RTOSsmall_rtos1.20.2-80C51 microcontroller based on the open-source operating system version 1.20.2 RTOSsmall_rtos1.20.2

有关AVR单片机的bootloader，外国人写的，很实用，内容详细-the AVR MCU Bootloader, foreigners write, and very practical, detailed