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STM32051系列单片机的源码程序，电子书(STM32051 MCU source program, the e-book)

51单片机数字钟程序，数码管显示时分秒，按键切换显示日期，包含闰年处理。(51 microcontroller digital clock program)

its about sampling.how to sample.mean getting an idea about sampling

PLL锁相环 输入三相电压电流 输出电角度 DQ轴电压电流(Phase Loop Lock Input: 3_phase voltage¤t output: angle & DQ-axis Voltage&Current)

一个多通道ADC转换DMA传输数据。程序是选择的通道0和通道1，各采集50次，然后滤波取其平均值，并发送到串口显示采样的电压值。(A multi-channel ADC conversion DMA transfer data. Program is selected channels 0 and 1, each collecting 50 times, then filtering the mean value, and sent to the serial display sampled voltage value.)

基于STM32的CCD 图像传感器S10420驱动源码 实际测试有效，能过产生驱动(STM32-based CCD image sensor S10420 drive source code is actually tested, can produce a drive)

51单片机AT89C52串行通信.上位机通过串口向单片机发数据，单片机接收后发回给上位机。(51 AT89C52 single-chip serial communication. PC send data through the serial port to the microcontroller, the microcontroller has sent back to the host computer.)

说明：  msp430芯片内部ad12模数转换程序源码。。(MSp430 chip internal Ad12 analog-to-digital conversion program source code.)

msp430f22x4系列的C语言编程，值得参考(msp430f22x4 series of C language programming, it is also useful)

基于STM32F103C8T6的AD7779采样程序，用于220VAC交流采样。(Based on STM32F103C8T6 AD7779 sampling program for 220 vac ac sampling.)