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红外解码数码管显示,用你一个外部中断和一个定时器中断来做的，虽然可以解码，但是效率不高，不建议在商用产品上使用。(IR decoding the digital tube display, you use an external interrupt and a timer interrupt to do, although it can be decoded, but efficiency is not high, not recommended for use in commercial products.)

通过51单片机设计一个电子时钟，精确到秒，可以通过按键调节时间(By 51 microcontroller design an electronic clock, accurate to seconds, you can adjust the time by pressing a button)

说明：  对STM32单片机内部的温度进行测量，主要靠的是内部传感器(Temperature measurement in STM32 single chip computer mainly depends on internal sensors.)

串口1串口2互相转发对方收到的数据，串口2转发串口1收到的数据，串口1转发串口2收到的数据，stm32(Serial port 1 serial port 2 forward each other to receive the data, the serial port 2 serial port 1 received data, serial 1 forwarding serial port 2 received data, stm32)

MSP430F5529开发板的蜂鸣器例程(MSP430F5529 development board routines buzzer)

EM78P153 程序可以调速调档智能风扇(EM78P153 smart fan ctrl)

当时间到时，蜂鸣器提醒，并有音乐提示。 时间可以自己设定，可以最小化到托盘。(time)

Datasheet of LCD chip

用于计算同步电机发生三相短路故障时，功角随时间的变化关系。(For the calculation of the three-phase short circuit fault occurs synchronous motors, power angle changes with time.)

使用51单片机实现的超声波测距模块，带有显示，语音报警功能，附有原理图和PCB板(A MCU program using Ultrasonic testing to measure the distant with display and voice alarm function, package with PCB and schematic)