EX10-PLL

利用Keil C51 和LabVIEW编写程序实现PC与单片机串口通信。 设计任务 PC通过串行口将数字（00 ，01 ，02，03... ，FF，十六进制）发送给单片机，单片机收到 后回传这个数字，PC接收到回传数据后显示出来，若发送的数据和接收到的数据相等，则串 行通信正确，否则有错误。启始符是数字00，结束符是数字 FF。(Use Keil C51 and LabVIEW programming to achieve PC serial communication with microcontroller. Displayed after the PC via the serial port design task digital (00, 01, 02,03 ..., FF, hex) is sent to the microcontroller, the microcontroller receives return this figure, PC receives the return data , if the data sent and received data are equal, the serial communication is correct, otherwise an error. Startup character is a number 00, the end of the character is a number FF.)

ht1621驱动C语言版本,基本是一个通用的版本(ht1621 driver C language version of the basic version is a generic)

单片机用作通用红外遥控接收器的设计 PWM调制开关电源的研究 以电子电力学为核心 以整流技术为主(generic microcontroller for infrared remote control receiver design PWM switching power supply of electronic learning for power to the core technology-based rectifier)

实验班上电时，数码管不显示，顺序按下矩阵键盘后，数码管上依次显示0~F，六个数码管同时静态显示即可。(Experimental class power, the digital tube does not show the order of matrix keyboard is pressed, the digital tube followed by 0 to F, six digital tube and static display can.)

基于LM3S9B92的液晶显示图片的程序设计与实现，代码详细(Based on with LM3S9B92 the LCD display pictures Program Design and implementation of a detailed code)

说明：  单片机驱动3310 lcd显示屏的c程序，单片机与屏的线路连接可以参见程序中的宏定义。程序写得很精简，但是很好用。(Microprocessor 3310 LCD display c procedures, SCM and the screen can see the line connecting the procedures macro definition. Very streamlined procedures, but is useful.)

(msp430g2553)正弦信号，一方面被adc采集获取其幅度信息，另一方面经比较器变成方波，经Timer捕获获取其频率，然后控制SPWM信号的频率与幅度，使输入与输出同幅同频变化。((Msp430g2553) sinusoidal signal, on the one hand is to get its amplitude information collected adc, on the other hand by the comparator into a square wave, captured by Timer obtain its frequency, and then control the frequency and amplitude SPWM signal input and output with the same amplitude frequency variations.)

说明：  R5F56218程序，ADC采集电压传输(R5f56218 program, ADC acquisition voltage transmission)

usb3.0开发板原理图,有参考价值，能跑到200M(usb3.0 development board schematics)

按键控制PWM占空比，利用按键控制PWM的占空比调节直流电机转速，LED显示(Key control PWM duty ratio)