经过一段时间的使用，上次的硬盘MP3播放器增加了USB下载文件功能； 汉字LCD显示功能；子文件夹功能等。并对软件做了一些修改。并将 硬件电路图画出来了。由于做得仓促，难免有不妥之处，请大家谅解， 欢迎指出错误。谢谢。-After a period of use, the last of the hard disk MP3 player, an increase of USB download files function characters LCD display Subfolders functions. And the software to do some modifications. Hardware circuit and the pictures came out. As a result of doing a rush, inevitably something wrong with the U.S. understanding, please welcome to point out the error.谢谢.

关于单片机的一些东西，对初学者有一定的帮助-About SCM something for beginners have some help

单片机8051点对点通信程序，是个例程，大家可以参照做修改！-8051 single-chip point-to-point communication program is a routine, we can modify the light to do!

为8个数码管有五种模式的闪烁方式 可以通过按键控制的，-to eight digital possession of five patterns of flashing mode can be controlled by buttons,

P89CXX编程器控制CPU接收和控制程序-P89CXX programming control CPU to receive and control procedures

一个基于单片机的充电器程序，能冲各种电池，可以设定模式。-A procedure based on single chip charger can be washed all kinds of batteries, you can set the mode.

keilC51编写的，配合单片机AT89C51的液晶模块PG12864的驱动显示程序！-keilC51 prepared with AT89C51 single-chip LCD driver module PG12864 display program!

AT29C040在单片机中的应用不仅能使用户快速地实现所需功能，而且电擦除的方式为程序和数据的存储和更新提供了方便，随着闪速存储器器件朝着容量越来越大、工作电压越来越低、支持共同的接口标准的方向发展，闪速存储器硬件接口和软件设计将越来越容易。 -AT29C040 in MCU that the application enables users to quickly achieve the required functions, but also-- in the form of erasure and data storage and update provides a convenient, as Flash memory devices towards increasing capacity, low voltage increasingly support a common interface standard direction, Flash memory interface hardware and software design will become increasingly vulnerable.

LCD 显示屏由三片控 制，每个内部带有6 （512字节） 的RAM 对应关系如右图所示 片选对应表：

此为单片机的一个电子钟程序，希望对大家有帮助-This is an electronic bell SCM procedures, in the hope that everyone has to help