Rebirth 79: I opened a bank in the United States

Chapter 602 Point-by-Point Transfer Network

"Is it because of the loss in the transmission process, or the escape of electrical signals during long-distance transmission?"

"Well, not at all. In the process of primary transmission of electricity, there will indeed be losses, even amazing losses, but that usually only exists in the field of energy transportation. In terms of electrical signals, child, have you tried calling from us? How about California? Think about it, if there is the exaggerated loss you mentioned during the transmission of electrical signals, how can we guarantee the quality of our calls?"

"Then why is that? Even if New York University is closer, it won't waste so much time compared to the same period."

Carter walked around the cabinet of the S370 mainframe, looking here and there
Carter is really not very interested in the minicomputers and personal PCs of this year.For minicomputers, it is better to say that it is an exploration of new equipment and new technologies than archaeology.
Go back and change to a big house, clean up a room in your own house, and just collect these old antiques.As for use, you can pull it down
Carter, who had obtained a national first-class computer certificate, asked him to type codes. It was impossible in this life!
"Because we pass a file out, every node along the way will receive, save, and forward it to the next node until the file reaches our destination."

"Transfer point by point?"

Carter was stunned, it seems reasonable to say so.
The so-called point-by-point delivery network is probably that the process of A sending a file to D is that A first sends it to B for acceptance, B accepts it and then sends it to C until D receives the file
No matter in terms of timeliness or confidentiality, this point-by-point delivery network is extremely low!
"That's right, the current mainstream network communication is point-by-point delivery."

"Isn't there a way to do point-to-point delivery? For example, I want to send a file to the University of California now. In the output location, directly write down the IP address of the receiving terminal, and then..."

"You still know the IP?"

Um? ?

Carter was taken aback by Professor Freeman's slightly surprised and surprised words.
"Since you know IP, you should also know the TCP protocol, right? Don't you know that our communication protocols based on Arpanet are all NCP? Under the NCP protocol, computer communication is very rigid. Now it is Many computers have started to update the NCP protocol to TCP/IP, but it will take a few days before we completely replace it."

Freeman walked to the computer and sat down, patted the stool, and motioned for Carter to sit down and chat.Seeing the enlightened look on Carter's face, Freeman became more and more curious:

What did this kid understand? !

"Can I see how you usually use the BIT network? I mean, except for file transfer."

"Of course, I'm about to show you!"

After lighting up the monitor of the mainframe, Professor Freeman moved the chair aside to make room for Carter.

"On BIT, we have grouped various academic issues. Professors who have relevant questions and need to communicate and communicate can directly enter the user group of each group to ask questions, or answer other people's questions!"

"Compared with transferring documents, this kind of communication is the most common use of BIT, and it is also the place that helps us the most. Because there are many literature materials in their local libraries, it is not unavailable, and we need to input and transmit them through the network. Not many. Moreover, there are often some problems with the documents delivered on the Internet. For example, we are still unable to effectively enter graphic files. In other words, the transmission efficiency is not as good as fax.”

Looking at the screen, the extremely simple UI interface, black background, and white English letters form user groups one by one.There will be groups of different disciplines or technical nouns as labels. Before Carter could think about it, Professor Freeman opened one of the user groups
It is different from future QQ group chats or MSN chat rooms.How to talk about the communication on the BIT platform, it has the taste of an online chat room, but it is very different.
For one thing, the slow transmission speed makes the behavior of swiping the screen, which can be seen everywhere in later generations, completely non-existent here.And the result of a small number of professional users is that these people talk, and there is really no nonsense.

Before reading two sentences, Carter realized that he could no longer understand what these professors were talking about
However, this discovery also made Carter realize a problem: It seems that after Windows is developed, the MSN project can be launched
In terms of technical conditions, it is relatively mature!
The only thing that is not so good is that this speed does not, it should be said, the infrastructure of this information channel
"It would be better if this speed can be faster!"

Carter sighed, and signaled to Professor Freeman with a sigh that he had finished his visit.

"Who said it wasn't? Haha, don't worry, this speed will definitely accelerate in the future. I heard that Chicago already has a transmission line using optical signals, and the speed is more than a hundred times that of ours, but"

"optical fiber?!"

"It seems to be the name, hey you."

Professor Freeman couldn't bear it anymore, and patted Carter on the shoulder:

"What's going on in your mind right now? And your unspoken source of information. Obviously you act like a computer, a layman in the field of communication, but what you know, kid, doesn't look like a layman. Fiber optics Noun, not many people know it!"

"Ah, I. I was just thinking, what can I do! Just like you said, the speed of information transmission will increase significantly in the future, I think, when the efficiency of information transmission increases, this will be a big battle. Unprecedented changes!"

Carter scratched his forehead, consciously ignoring questions of interpretation.

Your own sources of information. Can we say that we have seen or even used it?Learn about gigabit broadband?
"And I'm a businessman and an American. Well, so, you should understand, professor? If I can contribute to this, on the one hand, I can make money. On the other hand, the construction of information channels can make We in the United States exchange information faster and are more productive! Isn’t that exactly what President Reagan was talking about, the way to make America great again?”

"As a patriot, when I knew this information, I wondered what I and the Yale Doers Club I founded could do something in this wave of history. I believe that this incident will make us When I am old, I can recall the past with a proud expression on my face!"

"Hahaha, young man"

Staring deeply at Carter, Professor Freeman suddenly smiled:

"Your idea is very good, whether it's making money or building the country. I don't care what your real purpose is. After all, objectively speaking, if you can do something for it, the two The goals should all be accomplished simultaneously.”

"It's just that it's not a small project to build an information transmission network covering a large area. You can't do this by yourself, including your community, with all due respect!"

(End of this chapter)