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说明：  PID控制pwm风扇，可吹小球，附带激光测距，可通过LCD显示(PID control PWM fan, can blow small ball, with laser ranging, can be displayed by LCD)

运用PTOTEUS仿真74595对6个LED数码管的驱动显示，了解串口的数据传送模式。(PTOTEUS simulation using 74,595 pairs of six digital tube LED display drivers to understand the serial data transfer mode.)

说明：  HELO MI NAME IS PANCHO NICE

codelock with IR key (receiver and transmitter)

国家电网智能表源程序，使用C写的可移植性非常强，是做智能电表开发者有很大的帮助，甚至可以直接用，是很成熟的程序。(National Grid smart meter source, written in C portability is very strong, smart meter developers are doing a great help, and even can be directly used, is very mature program.)

oled屏幕上面显示时分秒，可自行控制暂停(Time and seconds are displayed on the OLED screen, and the pause can be controlled by itself.)

说明：  STM8 开发环境、最小项目工程、最小系统 二、STM8S的最小硬件系统 STM8的最小硬件系统包含下列部分： 1、电源 2、时钟管理 3、复位管理 4、调试接口(SWIM) (Development EnvironmentSmallestProjectSystem)

CH374_USB转串口设计，以MCS51为例，其它单片机需修改HAL*硬件抽象层的几个文件。(CH374_USB-serial design to MCS51, for example, other devices need to modify the hardware abstraction layer HAL* several files.)

实现RC522射频芯片的读写，扣费，注册，和充值等功能，51单片机绝得可以用(RC522 RF chip to read and write, chargeback, registration, and recharge function, 51 MCU must have to be able to use)

ad9850的单片机程序，适用于51系列，有用的可下载参考(ad9850 microcontroller program, suitable for 51 series, useful can be downloaded for reference)