Use 8051 connect to the DS1302 timer ic and get the date, time.

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vc++图像功能非常有用的说明和例子

本标准是根据《国家发展和改革委员会办公厅关于印发2006年行业标准项目计划的通知》（发改办工业［2006］1093号）的安排，对DL/T 645-1997《多功能电能表通信规约》的修订。 制定本标准是为统一和规范电能表的多功能电能表与数据终端设备进行数据交换时的物理连接和协议。信息量的确定以DL/T 614-2007《多功能电能表》为依据。 本标准与DL/T 645 请点击左侧文件开始预览 ！预览只提供20%的代码片段，完整代码需下载后查看 加载中 侵权举报

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一个QT的PPT教程，简单易学，是QT入门非常好的资料。-A QT-PPT tutorials, easy to learn, is a very good entry-QT data.

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本文主要介绍了ADI 公司最新推出的三相高精度多功能电能计量芯片ADE7878， 以及其在谐波计量中的应用，重点阐述了ADE7878 的功能特点，典型电路以及电能计量 方法，尤其对ADE7878 校表流程及其算法做了详细介绍。-This paper describes the ADI" s latest high-precision multi-function three-phase energy metering chip ADE7878, as well as its application in harmonic measurement, focusing on the features of the ADE7878, the typical circuit, as well as power measurement methods, especially for the ADE7878 School tables process and its algorithm has done a detailed introduction.

C++ Primer Plus（第五版）习题解答和例题代码-C++ Primer Plus (Fifth Edition) Problem explanation and Example Code

Java编码规范 CHM版 初级程序员 必学-Java coding standard CHM version junior programmers must learn

外语地名汉字译写导则英语,在翻译时，不免会遇到许多外语地名不知道译成什么字，这里给出了导则-Chinese translation of foreign language place names written guidelines in English, in translation, will inevitably encounter many English names do not know what the word translated here is the Guideline