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P1口扩展实验 P1口既做输入口又做输出口，KEY1做为左转弯开关，KEY2做为右转弯开关。LED5、LED6做为左转弯灯，LED7、LED8做为右转弯灯（如图2-2）。 编程实现汽车转向灯功能，即：KEY1接高电平KEY2接低电平时，右转弯灯灭，左转弯灯以一定频率闪烁（注意：KEY拨向上方为0）；KEY2接高电平KEY1接低电平时，左转弯灯灭，右转弯灯以一定频率闪烁；KEY1、KEY2同时接低电平时，发光二极管全灭；KEY1、KEY2同时接高电平时，发光二极管全亮。(P1 I extended not only to do experiments P1 I also do input output, KEY1 switch as a left turn, KEY2 as switches and turn right. LED5, LED6 as a left turn lights, LED7, LED8 as lights and turn right (Figure 2-2). Programming car turn signal function, namely: KEY1 high key2 access low-level access, the right turn lights out, left turn to a certain frequency of flashing lights (Note: KEY allocated to the top to 0) KEY2 access high Key1 low-level access, the left turn lights out, turn right to a certain frequency of flashing lights KEY1, KEY2 low at the same time, the light-emitting diode body KEY1, KEY2 high at the same time, the light-emitting diode light-wide.)

使用51单片机，用其内部定时中断，和外部中断只找一个可控脉宽调制信号PWM(Using 51, with its internal timer interrupt, and external interrupt only to find a controllable pulse width modulation signal PWM)

一个指示灯闪烁的小程序，给大家做参考，个人认为还是有参考价值的。(A simple Led indicator program for glitter.)

数据采集程序，采集波形图数据，并实现数据的存取(data acquisition)

stm32103RB资料(参考代码)标准例程，包括源代码和pdf解析，有灯，按键，终端，PWM，显示屏，adc，iic，spi，flash，usb等等56个实验例程(Stm32103RB data (reference code) standard routines, including source code and PDF parsing, with lights, keys, terminals, PWM, display, ADC, IIC, SPI, flash, USB and so on 56 experimental routines)

计步器，基于单片机与ADXL三轴加速度传感器的计步器，实现计步、1602显示步数及平均速度功能。 ( Pedometer, pedometer-based SCM and ADXL triaxial accelerometer achieve pedometer, 1602 show the number of steps and the average speed function.)

该文件是1024点的快速FFT，它是用C语言编程，在CCS环境下运行的(fast fourier transform)

PIC18系列单片机范例，包括各部分的调试(PIC18 MCU examples, including the part of the debugging)

AD9851驱动程序，采用串行写入方式，STM32写入频率控制字。(AD9851 driver, using serial write mode, STM32 write frequency control word.)

89c52的串口通信的演示 (89c52 serial communication demonstration)