这取决于电机转速的PWM，PWM有T和T，T有…

本文为应用于嵌入式电子线路硬件pcb布线方面的书籍，讲解高速66M-200M主频cup的设计方法--A book describes high speed 66M-220M CPU design method. It could be applied in laying out pcb in embedded circuit hardware.

用C语言模拟I2C时序功能，已经调试通过，可以直接使用-C language simulation with I2C timing functions, has been through the debugging, you can directly use

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步进电机细分程序，是我们竞赛的时候写的程序，大家可以参考一下-Stepper motor subdivision process, the time to write our race program, we can reference

属简易型在线编程器，适合单片机初学者及低成本开发者，采用并行口方式对ATMEL89S51/89S52单片机进行编程，方便简捷。-Simple is an online programming, and suitable for beginners and low-cost single-chip developers, on the use of parallel port single-chip programmable ATMEL89S51/89S52 to facilitate simple and convenient.

at91sam7s63,ads1.2编译器 本程序为为一个简单的跑马灯演示： 1，完成基本的初始化 2，驱动板上的四个发光二极管(DS1,DS2,DS3,DS4) 3，驱动板上的四个按键(PB1,PB2,PB3,PB4) 4，现象为四个发光二极管不停的依次闪亮 当有PB1按下,闪亮的速度加快 当有PB3按下,闪亮的速度减慢 -at91sam7s63. ads1.2 compiler for the procedure for a simple demonstration of 5,250 : a complete two basic initialization, the four-panel light-emitting diode (DS1 and DS2, DS3, LST), 3 the four-panel buttons (PB1, PB2, PB3, PB4) 4. phenomenon of four LEDs flashing constantly followed the PB1 When pressed, shiny speed when PB3? shiny slower pace

应用背景试验模拟到数字转换器ATmega8  ； ；关键技术使用USART  ；在ATmega8单片机引脚

pencil嵌入式系统开发包--A development package for pencil embedded system.

开放源码串口通讯的程序（C）-OSS serial communication procedure (C)

应用背景QT5版本以上的版本，用于对指定的视频进行播放，但是没有对所有的视频格式都支持，可以移植到相应的嵌入式系统进行跑程序关键技术用QT5版本以上的QMovie类对指定的视频进行采集和播放，大家可以去参考qt5版本的使用文档，里面详细介绍了这个类可以播放的视频格式类型和使用方法