Personal profile Chang Yuan (Yon CHUNG, 1964.02~), male, director and professor of China Aerospace Social System Engineering Laboratory (CALSSE), researcher of Intellectual Property Research Center o...
Background With the rapid development of communication network technology, people’s requirements for broadband and services are also growing rapidly, in order to provide users with more flexible and...
Basic information Pricing: 18Number of pages: 117Publication date: 2005-11-1Edition: 1Format: 16 openPackaging: Paperback Introduction This book explains the soft Switched network architecture, stand...
History In modern society, people have higher and higher requirements for communication. In addition to the original voice, data, and fax services, they also require comprehensive transmission of hig...
Overview of B-ISDN network B-ISDN (Broadband Integrated Services Digital Network) is a broadband communication network, and broadband means high-speed information transmission. The information rate...
Source Usually it comes from popular expressions in film and television networks, and more often because of a certain social phenomenon, which has produced some opinions that are accepted by everyone...
Introduction Every year at the end of the year, various inventory and lists are released. At the beginning of December 2012, the freshest "Top 10 Most Classic Internet Buzzwords of 2012" became popul...
The process of connecting and assembling all the target modules obtained after compilation, and then connecting them with the function library as a whole is called program linking
Center functions The center conducts chemical composition and state analysis, physical testing, mechanical testing, non-destructive testing, instrument calibration, comprehensive evaluation of mater...
Device selection There are many factors to consider when selecting a leakage protection device. Among them, the first is to correctly select the leakage action current of the leakage protection devi...
The structure of the residual current circuit breaker for leakage protection is to add a sensing element (zero-sequence current transformer) that can detect leakage current in the original plastic cas...
Background "Modern Chinese Dictionary" was compiled in accordance with the instructions of the State Council. It is the first standardized language dictionary in New China. The main reference book fo...
Introduction In the past, "Modern Chinese Dictionary (5th Edition)" only indicated part of speech for some function words, common pronouns, and quantifiers. Chinese words have been fully marked with...
Overview The S7 project is composed of the main loop block OB1, its calling functions, function blocks, and various interrupt organization blocks (OB):· Organization block (OB)·Function (FC)·System...
Definition Record the data of one page full of memory on the tape, which is called a data block. A data block consists of a block header, data space and free space. When creating objects such as tabl...