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说明：  用于cc2530 的初学者参考，为cc2530的学习启蒙文件(used by cc2530 for those who want to learn cc)

485通讯程序大全485通讯程序大485通讯程序大全全485通讯程序大全(485 procedures for a large program Daquan 485 485 485 total communication program procedures Daquan Daquan)

基于STM8的DHT11温湿度计，单总线通讯(DHT11 Thermometer and Humidimeter Based on STM8, Single Bus Communication)

与图书馆管理系统不同，本系统网站是图书管理系统，其设计目标是，建立一个管理形式的网站，用于个人对所拥有的图书进行管理，具有管理员登录以及图书的增删改查功能。 由此，本系统做到以下几点： 1.  图书查看。 2.  图书信息的添加，详情，编辑，删除。 3.  用户登录，注册，注销

基于stm32f103zet6单片机的超声波测距(Ultrasonic ranging based on stm32f103zet6 single chip computer)

CodeWarrior仿真与调试要点，CodeWarrior仿真与调试要点，CodeWarrior仿真与调试要点(CodeWarrior simulation and debugging points, CodeWarrior simulation and debugging points, CodeWarrior point emulation and debugging)

STM32103RBt6，进行BLDC的电机控制，具有速度闭环。(STM32103RBt6, the BLDC motor control with speed closed loop.)

java项目酒店管理（含数据库脚本）

zigbee document upload 23/7/2019

脉冲宽度调制是一种模拟控制方式，根据相应载荷的变化来调制晶体管基极或MOS管栅极的偏置，来实现晶体管或MOS管导通时间的改变，从而实现开关稳压电源输出的改变。这种方式能使电源的输出电压在工作条件变化时保持恒定，是利用微处理器的数字信号对模拟电路进行控制的一种非常有效的技术。脉冲宽度调制是利用微处理器的数字输出来对模拟电路进行控制的一种非常有效的技术，广泛应用在从测量、通信到功率控制与变换的许多领域中。(Pulse width modulation (PWM) is an analog control method, which modulates the bias of transistor base or MOS gate according to the change of load, so as to change the turn-on time of transistor or MOS and realize the change of output of switching regulated power supply. This method can keep the output voltage of the power supply constant when the working conditions change. It is a very effective technology to control the analog circuit by using the digital signal of the microprocessor. Pulse width modulation (PWM) is a very effective technology to control analog circuits by using the digital output of microprocessors. It is widely used in many fields, from measurement, communication to power control and conversion.)