maskingthreshold1213

三相脉宽调制电流型整流器，可以用来实现单位因数功率运行。(Three phase PWM current source rectifier ，Can be used to achieve unity factor power operation. )

stm32 下载器 可以利用串口烧录！方便快捷(stm32 downer this is a good app.)

a software tool for ios devices like iphone. this tool can jailbreak and install Cydia on your phone. Upgrade and resrore to your favorite os

在郭天祥单片机开发板上做的一个精确度非常高的时钟，用的是c语言(MCU development board in 郭天祥 an accuracy very high clock c language)

本科做的课设 密码锁 觉着还可以 分享一下 与大家共同学习 (Undergraduate classes set combination lock Feel can also share Study with everybody together)

十字路口车辆穿梭，行人熙攘，车行车道，人行人道，有条不紊。那么靠什么来实现这井然秩序呢？靠的是交通信号灯的自动指挥系统。交通信号灯控制方式很多。本设计主要分为五大模块输入控制电路、时钟控制电路、片内外程序切换控制、显示电路。以MSC-51系列单片机IntelAT89C51为中心器件来设计交通灯控制器，实现了AT89C51芯片的P0口设置红、绿灯、黄灯燃亮时间的功能；为了系统稳定可靠采用了74LS14施密特触发器芯片的消抖电路，避免了系统因输入信号抖动产生误操作；显示时间直接通过AT89C51的P2口输出，由CD4511驱动LED数码管显示红灯燃亮时间。(Crossroads shuttle vehicles, pedestrians bustling, car lanes, walkways, everything in good order and well arranged. So what can we do to achieve this orderly order? It depends on the automatic command system of traffic lights. There are many ways to control traffic lights. This design is mainly divided into five modules, input control circuit, clock control circuit, chip internal and external program switching control, display circuit. MSC-51 series microcontroller IntelAT89C51 centric devices to design the traffic light controller, the AT89C51 chip P0 port set of red, green, yellow light to kindle the function of time; the system is stable and reliable with shake eliminating circuit 74LS14 Schmidt trigger chip, avoids the system for input signal jitter generation misoperation; direct display time AT89C51 through the P2 port output, driven by CD4511 LED digital tube display lights burning time.)

基于stm32f407的超声波模块测距，用串口显示，使用keil5编写，语言为C(Stm32f407 based ultrasonic module distance measurement, using serial port display, written in keil5, the language is C)

光伏逆变器的双闭环控制仿真原理图 dc-dc采用mppt跟中(The double closed loop control simulation diagram of photovoltaic inverter)

IAR 工程，使用标准库，减少建立工程实践，IAR版本8.xxx(IAR Project use std periph)

Default prop of MTK 6589 device modded in tweaks and display resolution