74HC595在数码管上的详细应用和编程方法

本软件是单片机通讯的主程序，通过串口传送数据。-This software is the main single-chip communications, through the serial transmission of data.

T9中文输入法，可嵌入自己的系统，增加系统的价值-Chinese T9 input method can be embedded in the system, increasing the value system

单片机在循环显示数字列的同时，采用查询方式控制数字的显示时间和音乐播放的开关。音乐低频信号由定时器采用中断方式产生。-SCM in circulation figures out show at the same time, using figures for the control of time- and the music player switching. Music low-frequency signals used by the timer interrupt way.

实时时钟芯片DS1302采用串行接口，只需3根引脚便可以完成操作，其使用非常方便。这里采用AT89S52单片机作为外部微处理器，来对DS1302进行控制-Real-time clock chip DS1302 serial interface, only three pins will be able to complete the operation, its use very convenient. AT89S52 microcontroller used here as an external microprocessor to control of the DS1302

HT44780 液晶显示驱动 里面有简单 程序和说明-HT44780 driver inside the liquid crystal display has a simple procedure and description

基于Keil C平台的C程序源码，适用于AT89ls52，此程序用于检查7279键盘led专用控制芯片好坏的检测程序，具体内容可参见源码注释-Keil C platform based on C program source code, apply to AT89ls52, this procedure used to check the 7279 keyboard controller chip dedicated led mixed detection procedures, the specific content of the Notes can be found in source

华为的印刷电路板（PCB）设计规范，程序编写规范等-Huawei’s printed circuit board (PCB) design specifications, programming specifications, etc.

TLC2543实时时钟芯片的读取程序，采用AVR单片机读取，并附上芯片的Datasheet。-TLC2543 real-time clock chip reader, using AVR read, accompanied Chip Datasheet.

ICCAVR用户指南,ICCAVR编程手册-ICCAVR user guide ICCAVR Programming Manual

编写一个延时1MS子程序根据题目选择是定时还是记数状态，本题选择记数状态。然后根据延时1MS计算出计时器的初值是E0H（高8位）18H（低5位）。最后编写算法，对T0初始化，利用T0的中断TF0调用中断处理程序。-prepared a delay rungs subroutine under the topic chosen is not a time to memorize numbers or state of mind of the few options that state. According to delay timer rungs calculate the initial value is E0H (high 8) 18H (Low 5). Preparation of the final algorithm, the T0 initialization, interrupt the use of T0 TF0 call interrupt handling procedures.