智能电话系统的使用说明书

L298N是ST公司生产的一种高电压、大电流电机驱动芯片。该芯片采用15脚封装。主要特点是：工作电压高，最高工作电压可达46V；输出电流大，瞬间峰值电流可达3A，持续工作电流为2A；额定功率25W。内含两个H桥的高电压大电流全桥式驱动器，可以用来驱动直流电动机和步进电动机、继电器线圈等感性负载；采用标准逻辑电平信号控制；具有两个使能控制端，在不受输入信号影响的情况下允许或禁止器件工作有一个逻辑电源输入端，使内部逻辑电路部分在低电压下工作；可以外接检测电阻，将变化量反馈给控制电路。使用L298N芯片驱动电机，该芯片可以驱动一台两相步进电机或四相步进电机，也可以驱动两台直流电机。-L298N is produced by ST a high-voltage, high current motor driver chip. The chip uses 15-pin package. Main features are: high voltage, the maximum working voltage up to 46V output current, instantaneous peak current up to 3A, continuous operating current of 2A rated power of 25W. Contains two H-bridge high-voltage high-current full-bridge driver can be used to drive DC motors and stepper motors, relay coils and other inductive load using standard logic level signal control has two enable control terminal, input signal without affecting the case to permit or prohibit the device work a logic supply input, so that part of the internal logic circuits at low voltage work can be an external sense res

可移植网络图形格式(Portable Network Graphic Format，PNG)名称来源于非官方的“PNG"s Not GIF”，是一种位图文件(bitmap file)存储格式，读成“ping”。 uCGUI, UCGUI就是基于UCOS嵌入式操作系统写的可视化界面函数库。 uCGUI只支持jpg图片，给uCGUI添加了png文件格式的支持。PNG比jpg更加小巧，高质。

对LM285驱动进行详细的介绍。包括每个函数的用法。 是非常权威的教材。对LM285的编程有非常大的帮助。 可以有助于我们的学习. -LM285 Driver for a detailed introduction. Including the usage of each function. Is a very authoritative teaching materials. LM285 programming to have a very big help. Can help us to learn.

一个很不错的无线传感网络协议栈，特别适合初学者-A very nice wireless sensor network protocol stack, particularly suitable for beginners

嵌入式触摸屏实验-Embedded touch-screen test

国外高速设计经典书籍，对于PCB设计的朋友来说应该很有帮助-Foreign high-speed design of the classic books, for the PCB design should be very helpful for Friend

saving energy clamping program saving more than while sentence

yampp3 mp3 test code

wxWidgets中文版教程,一个很好的跨平台的GUI库-Chinese version of wxWidgets tutorial, a good cross-platform GUI library

本代码包括boch程序的安装包、linux0.11内核代码编译文件、模拟软盘。首先安装boch程序，然后加载linux0.11及软盘。boch是个非常优秀的系统调试工具。很多人都对linux望而生畏，但在查看源代码的基础上借助boch我们可以很更清楚了解linux最底层的运行过程。