USART

说明：  2015年电赛国测题，频率测量。基于stm32的频率测量。优点：精密度高，代码简单(In 2015, the National Test of Electricity Competition, Frequency Measurement. Frequency measurement based on stm32. Advantages: High precision, simple code)

BCB 的数控实验的子程序，是我毕设的一部分，会对BCB工程新手有帮助(BCB NC Subroutine experiment, I completed the set up part of BCB project will have to help novice)

J1939 protocol description

说明：  stm32例程 用于学习目的 例程为stm32g系列 若其他系列需修改gpio引脚(STM32 routine is used for learning. The purpose routine is stm32g series. If other series need to modify GPIO pin)

说明：  一个关于mega8的AD转换和串口发送接收程序，转换结果用数码管显示···(One of the AD converter and serial mega8 receiving program to send the conversion result with digital display···)

说明：  基于stm32f403gz的pwm移相程序，可以调用函数来实现自己pwm波形优化(The PWM phase-shifting program based on stm32f403gz can call functions to optimize its PWM waveform)

这是一个成功的VB上位机与18b20下位机的程序及电路图(This is a successful VB host computer 18b20 procedures and schematics of the lower machine)

一个很好的STM32F103驱动液晶屏12864进行波形显示程序，波形2KHZ测试正常(A good LCD screen 12864 STM32F103 drive waveform display program, the tests are normal waveform 2KHZ)

16位10进制除法程序，KEIL51编写，适合单片机运算(16 10 M division procedures, KEIL51 prepared for single-chip computing)

按键是单片机系统最常用的输入设备之一；几乎是只要需要交互输入，就必须有键盘。本程序提供最常用的4*4矩阵键盘的程序，和4个按键的程序。 (The key is one of the most commonly used input devices MCU system it is nearly as long as the need for interactive input, it must have the keyboard. This program provides the most commonly used 4*4 matrix keyboard program, and 4 key procedures.)