num

可以产生幅度、频率可调的方波，频率50hz到1M(Can produce the amplitude, frequency adjustable Fang Bo, frequency of 50Hz to 1M)

PWM调光 1、学习目的：利用定时器产生PWM，了解原理和使用方法 2、硬件要求：LED灯 定时器 3、试验现象：LED灯由亮到灭，由灭到亮逐步变化，也就是调光现象(PWM dimming, learning objectives: the use of the timer to generate PWM understand the principles and use hardware requirements: LED lamp timer test phenomenon: LED lights from bright to off, gradually changes from off to bright, that is, adjusted optical phenomena)

关于51单片机和dac7811芯片之间通信的程序，可以正确模拟SPI串口通信，写入数据(On communication between 51 single chip microcomputer and dac7811 chip procedures, can correctly simulate the SPI serial communication, write data )

循环冗余校验16位的，c语言编程环境，能够正常运行，程序详细注释(16 bit cyclic redundancy check, C language programming environment, normal operation, procedures detailed notes)

用C语言编写的温度采集程序，可以用于C51单片机的开发(Temperature using C language acquisition program, can be used for C51 MCU development)

很好的一个永磁同步电机的控制仿真模型，自己的参考。(Good control of a permanent magnet synchronous motor simulation model of their own reference.)

zigbee无线定位系统的相关程序代码。很有用 都有相关解释(zigbee location code)

在51单片机上实现RS485通讯，能够实现与上位机的通信(RS485 mode on 51 single, able to communicate with the host computer)

STM32 4路AD+5110显示 ( )

stm32F410X PCA例程，Stm32F410x很好的学习资料(Stm32F410X PCA routines, stm32F410X very good learning material )