51_ustart

无差拍PFC仿真代码，在PSIM下的电路仿真(Deadbeat PFC simulation code, circuit simulation in PSIM)

例子\Proteus经典例子和中文资料 8051(Examples of classic examples of Proteus and Chinese information 8051)

万年历开发 时间Calendar Development - Time(Calendar Development- Time)

感应电动机的启动小程序，可以模拟启动过程，自动计算启动的参数，帮助初学者理解感应电动机的结构(Induction motor start-up small program that can simulate the boot process, automatically calculates the start parameters and Help beginners understand the structure of induction motor.)

全自动可遥控旗帜升降系统以AVR单片机为核心，由PWM对电机进行变频调速，高精度光电编码器测速，闭环式电路控制。能够利用按键输入相应的指令控制旗帜的升降，还可以实现在特定位置停留的功能。利用LCD可以显示旗帜的实时高度和相应的控制命令，用LED指示旗帜是否处于半旗状态，具有语音提示报警功能，并可利用无线模块实现遥控功能，准确均匀地实现旗帜的升降(Automatic landing system can be remote-controlled flag to AVR microcontroller core of the PWM VVVF motor, high-precision optical encoder gun, closed-loop control circuit. Enter the appropriate button to take advantage of the command control of the rise and fall of the flag, but also can stay in the function of a specific location. LCD can display the banner of the use of real-time high and the corresponding control command, the LED is directed at the flag half-mast, and alarm functions with voice prompts, and the use of wireless remote control function module, to achieve uniform and accurate take-off and landing flag)

通过WM_DEVICECHANGE来检测u盘的传播者源代码(through WM_DEVICECHANGE to detect u site promoters source code)

单片机内刻录程序，包含C语言和汇编语言两个版本。实现7455C5与单片机的串口通信，信息传输。(Microcontroller burning program, contains two versions of the C and assembly language. 7455C5 microcontroller serial communication, information transfer.)

这是关于电路板的设计图，方便大家下载。呵呵 (This is about the second Five-Year Plan, said a key project for the future development of a box of reference )

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)

时钟程序的编写 这是基于89系列 适用于初学者(clock based on 89C51 you can make a clock by yourself if you want )