摘要 文中提出用DDS芯片AB9852实现QAM数字调制的新方法，扩展AB9852在数字调制方面的应用。 。 ． 关键词 QAM调制 单片机 DD...

MSP430单片机FLASH系列的PCB和原理图库，很好用的啊！-MSP430 Flash series and the PCB Principle Gallery, the good ah!

PCB电路板。键盘控制，矩阵键盘的电路图。-PCB circuit boards. Keyboard control, matrix keyboard circuit.

atmega16 用pwm 产生正弦波 示波器观察ok-ATmega16 generate sine wave using pwm oscilloscope observation ok

精度为20位的数模转换芯片CS5503数据手册，有需要的朋友可以下来-Low-Cost, 16 & 20-Bit Measurement A/D Converter

用于手持时钟受时，时钟芯片的工作稳定性，以D18B20温度传感器的采集，微调时钟芯片的内置电容，改变震荡频率-For hand-held by the clock, the clock chip of job stability to temperature sensor D18B20 collection, fine-tuning of the built-in clock chip capacitors to change the vibration frequency

显示： “欢迎使用"， "单片机实验系统" lcd显示汉字-shows : "Welcome," "SCM experimental system" LCD display Chinese characters

基于AVR单片机mega8的电表C源程序（第一部分主函数与显示部分）-Based on the AVR Microcontroller mega8 meter C source code (the first part of the main function and display part)

51做的门禁系统代码，有4×4键盘扫描，9346的存储功能，掉电不丢失密码，3重密码防忘记功能-51 of the Access Control System code, a 4 4 keyboard scanning, the 9346 storage functionality, nonvolatile not lost password, three heavy-forget the password function

这个是SOC的芯片，是杭州万工的产品。可用于单相简单的电子式电度表的开发。资源比较丰富，可供参考-This is the SOC chip is the industry" s products, Hangzhou 10000. Can be used for a simple single-phase electronic power meter development. Resources are relatively abundant, available for reference

51的C语言教程，对各位初学51的新人来说，是一本很好的指导教材。-51 C language classes, beginner to you and the 51 newcomers, it is a very good guidance materials.