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Volume 4 The Dragon Heads Up Chapter 48 Data Bus

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    The Soviet delegation followed Fu Xin to the Huaxing Industrial Development Company in Xunyang City, Xijiang Province.  After seeing the modern and advanced assembly line production of the factory under the name of Huaxing, the five Soviet country bumpkins couldn't help but marvel. This is a very internationally competitive large enterprise. The Chinese are on the road to rejuvenation!  However, the biggest gain in their profession comes from Fu Xin, because Fu Xin proposed a new concept for them, and this concept inspired them very deeply!  Especially Andrei, the Soviet expert who was traveling with him, was even more impressed and gained a lot. However, just when he was about to ask further questions, Fu Xin fell silent. At this time, he also realized that what was coming next  It¡¯s about people¡¯s core secrets.  The concept Fu Xin proposed to these five Soviet bumpkins was the data bus.  Data bus, abbreviated as db in English and full name as databus, is used to transmit data information.  The data bus is a bidirectional three-state bus, that is, it can transmit data from the CPU to other components such as memory or input and output interfaces, and can also transmit data from other components to the CPU.  The number of bits on the data bus is an important indicator of a microcomputer and is usually consistent with the word length of the microprocessor.  For example, the word length of the Intel8086 microprocessor is 16 bits, and its data bus width is also 16 bits.  Oh, by the way, it needs to be pointed out that the meaning of data is broad. It can be real data, an instruction code or status information, and sometimes even a control information.  So in actual work.  What is transmitted on the data bus is not necessarily just data in the true sense.  "Mr. Fu, we probably understand the concept of the data bus you proposed, but how do you realize the exchange of business entity data between systems?" Andre asked sharply.  Fu Xin replied, "It is not difficult to achieve this, because each subsystem has a business entity layer in the architecture layer, and the data exchange mechanism establishes a layer in the business entity layer that is transparent to all application systems. Between subsystems  , no matter what the specific technical solution is, it can be shared and interacted through the business entity layer, which also establishes a structure that can be continuously integrated and business expanded between subsystems, thereby achieving a scalable and complete integration.  "Andre thought carefully for a while, and then said: "I think I understand, but how do you implement data exchange between systems?" "I think there are two types of data exchange between systems,  One is data exchange at the business entity layer, and the other is formatted file data exchange. " "Can you tell me more about it?" Andre was very convinced by Xin at this time. He was still a little arrogant before.  , even though Fu Xin is a Nobel Prize winner in physics.  But in his opinion, Fu Xin received this award in vain, but now.  He no longer thought that way at all, and before he knew it, he had already changed his approach to the new title.  changed to you.  It is conceivable that an old man in his fifties respectfully addresses a young man in his twenties as you.  You can imagine how Fu Xin's talent impressed him.  Fu Xin thought for a while and recalled the information in his mind.  Explained: "In my opinion, data exchange at the business entity layer is the most direct and efficient exchange solution between isomorphic subsystems. It should behave like this. By defining the data object interface layer between isomorphic subsystems,  Transmission through dto, or direct connection or access to data tables in the database, to achieve data sharing and exchange between isomorphic subsystems, such as data sharing and exchange between subsystems in the collection and management system, business systems and data mining.  Data sharing is a typical data exchange at the business entity level. "What about formatted file data exchange?" Andre was very excited at this time. He immediately asked Fu Xinlai as if he had found a treasure, for fear that Fu Xinlai would not tell him.  he.  Fu Xin smiled slightly. He could understand Andre's urgency. When he was doing research in his previous life, once he discovered a new field, he would feel like he had found a treasure, and then he would study it desperately. At this time  I really want to know the final result!  Fuxi, you did not embarrass Andre, and then explained: "Formatted file data exchange is file transfer with external systems. Business requirements for internal systems and external information exchange require the provision of corresponding data sharing and exchange technology mechanisms. This  Such problems are usually solved using file system-based technical solutions, such as file submission, file exchange, etc. For example: there is real-time and non-real-time data exchange between tax, treasury, and bank. This exchange optimization solution.  It is to use files to exchange through sockets. " "The implementation of this exchange method should be.Use underlying technology, right?  "Andre asked tentatively. He just has some ideas now, but he has not gone to the laboratory to verify it. He doesn't know whether it is correct. The current idea is at most a conjecture. "Fu Xin can't say no.  Nodding, there was no denying that the implementation of this type of technology did generally rely on underlying technology. Andre fell into deep thought again. After a while, Andre suddenly looked at Fu Xin in confusion and asked: "Mr. Fu, this system is broken.  You didn't say much about the data exchange method, right?  Why do I feel like something is always missing?  It's really weird" Fu Xin immediately shook his head and denied it, clearly no, but in fact, Fu Xin did miss one thing. There should be three ways of exchanging data between systems. Fu Xin said two, and there are also  There is a method called webserver data exchange. But this data exchange method is related to the web, so Fu Xin is naturally unwilling to say more about the web. Many people in the 21st century may not know its original meaning.  The meaning of spider web and web, but when it comes to web pages, everyone may understand that, yes, in web design, we call it web page. The origin of the so-called web page can be traced back to 1980, but for web pages.  The definition of web was relatively late. The development of web was actually started in 1989 by a British person in a large scientific research institution under the name of the European Community.  web. This is advanced content. After all, it is only 1986. Fu Xin will naturally not say anything about such important content. What¡¯s more, the other party is a Soviet, not a Chinese. Good thing, he should come first.  Keep it secret and study it yourself! No one has selfish motives, so Fu Xin will never reveal it to Andre. But Andre was still a little reluctant and asked: "  Mr. Fu, you must have forgotten to take into account data sharing and exchange between heterogeneous subsystems, right?  " Fu Xin frowned and sighed in his heart. This Soviet expert named Andre really has two brushes. Indeed, there is a lack of data concentration between heterogeneous subsystems. Effective technology must be used.  Means to ensure heterogeneous data sharing and exchange. Web server is a standard service based on the web. It is not restricted by the transmission protocol or hardware, nor is it restricted by the specific implementation technology of the subsystem. And if there are more advanced and complete applications.  The system or product provides an integrated interface based on web server, which solves the problem of data sharing and exchange between heterogeneous subsystems. Web server can also solve the data exchange across networks and industry systems, which requires the other interface unit to also have web.  Ervice service. Fu Xin thought of this, but it was impossible for Fu Xin to say it. He quickly shook his head in denial and concealed it calmly: "Professor Andre.  Sorry, the concept of data bus.  At present, I am still in the process of exploring and have not been able to perfect his concept. Therefore, I am not so sure whether I have considered data sharing and exchange between heterogeneous subsystems.  After all, when I studied this data bus, it was also because our company was studying program-controlled telephone systems. It was an extension of the project that came out of my sudden inspiration. We did not spend too much energy on studying it, that is, a few people proposed it to me.  This concept has been thought through, verified and supplemented!  "    "oh.  "Andre was a little disappointed. He didn't know if Fu Xin really didn't study so much, or if he wanted to hide it. I heard that Chinese people like to hide it the most, so Andre instinctively thought that Fu Xin was  I'm hiding it! Seeing Andre's disappointed look, Fu Xina decided to give this old guy a little sweetness, otherwise how could he be fooled? The Soviet Union was almost over, and Fu Xin had to start attacking the Soviet Union.  Some necessary arrangements have been made. It seems that Fu Xin can use Andre as a chess piece. Huaxing Group can use Andre as a chess piece to enter the Soviet Union in advance. This will be good for future operations.  But it¡¯s very beneficial! Fu Xin said: ¡°By the way, Mr. Andre, we have made some definitions and specifications for the data bus. Please see if our definitions and specifications are reasonable.  " "Please tell me.  "Andre still placed his position relatively low. This guy seemed to be a pure scientific researcher, and his spirit of not being ashamed to ask questions was perfectly reflected in him, so he also successfully entered Fu Xin's sight.  It will soon become a chess piece of Fu Xin. Fu Xin said: "A bus is a collection of signal lines and a common channel for transmitting information between modules. Through it, various data and commands can be transmitted between various computer components.  In order to make products from different suppliers interchangeable and give users more choices, the technical specifications of the bus must be standardized. ??????????????????????????????????? Mechanical structure specifications, which include module size, bus plug, bus connector and installation dimensions; functional specifications, which include each signal line (name of pin), function and working process of the bus; and electrical specifications, that is  The effective level, dynamic conversion time, load capacity, etc. of each signal line of the bus" After Fu Xin gave examples, he began to talk about some data stored in his mind. Of course, these data are very rough data.  That's too accurate. Andre, who loves the world, is not a fool. "Mr. Fu, I can't give you an answer to what you said. These need to be verified in the laboratory. How about" At this point.  , Andrei still listened and looked at Chartlov. After all, Chartlov was the leader of the delegation, and the decision-making power rested with Chartlov and An.  Andre looked at each other and understood what Andre was thinking, so he said goodbye to Fu Xin: "Mr. Fu, I'm glad you allowed us to visit your factory, thank you!  I think we¡¯ve almost seen it. We also have some things to discuss here. Look, let¡¯s leave it at that for today, okay?  ¡± Fu Xin nodded, and then politely asked the five members of the Soviet inspection team to stay. PS: Students who read this chapter should understand that they are beginning to pave the way for participation in the event of the disintegration of the Soviet Union! Spoiler alert  , yes, it has indeed begun to pave the way for participation in the event of the disintegration of the Soviet Union (to be continued, please search Piaotian Literature, the novel will be better and updated faster!
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