Siheyuan: I eat melons while doing scientific research

Chapter 1091 This is the High Speed

While Gao Zhendong was working hard, the 1274th Ministry of Machine Building was also not idle. In addition to , they were also incubating other integrated circuit production plants, and had achieved initial results. Some of them were going to be incubated in Qianshan. It can be foreseen that the cost of integrated circuits will inevitably drop, so once this thing is successfully integrated, it will indeed be cheaper than full discrete components.

Moreover, this cheapness is not just about the device itself, but also includes the reduction in its own size and power consumption, and the marginal effects it brings to its parent device.

As for the word "industrial", there is no need to explain. Harsh environments such as high temperature, high humidity, and strong vibration appear more frequently in industry. Integrated circuits are easier to complete corresponding reinforcement than circuits with discrete components.

The chief engineer of the 12th Ministry of Machine Building said to Gao Zhendong: "Comrade Zhendong, although the name of your short-distance, low-cost, low-speed industrial communication equipment is a bit long, you have used every word. Of course, the issue of short distance and low speed is worth discussing."

The comrades at the scene all laughed. These two words were indeed used incorrectly.

Unexpectedly, Gao Zhendong laughed even harder: "As for the short distance, compared with the communication distance at the Postal and Communications Commission, 1 kilometer is indeed only a short distance. As for the low speed... hehe..."

What the hell are you saying? Your evaluation of technical level is not normal, and your requirements are obviously abnormally high. Don't drag everyone down with you.

The comrades from the 12th Ministry of Machine Building and the Defense Work Committee were furiously complaining about Gao Zhendong in their hearts, and then they heard Gao Zhendong say, "Next, comrades, please listen to the final report on another set of equipment for short-distance and high-speed computer communications."

Everyone was shocked when they heard this. This was different from the previous one. The previous one was the first stage, but this second one was already ready to be concluded.

Seeing the comrades from the Computer Equipment Research Institute of Factory 1201 walking to the reporting table, the leaders of the th Ministry of Machinery smiled and said, "That's right, that's what it's like! That's what it's like!"

It is said that good things are buried in the bottom of the jar. This later report is probably more important than the previous one, and it is directly concluded. It seems that Comrade Gao Zhendong still keeps good things for his own people. The leaders of the 12th Ministry of Machine Building are quite satisfied.

The person in charge of the report was Director Xiao Gao. This matter was of such a large scale that the young people in the institute were afraid that they would not be able to handle the situation.

"Let me first report to all leaders and comrades that this project of computer local area network communication equipment was designed by our director Gao Zhendong alone, including chip design and circuit design. The rest of us mainly completed the manufacturing and testing work."

Although everyone in the institute calls Gao Zhendong "General Gao" and Director Xiao Gao "Director Gao", that is actually to distinguish the two people. Gao Zhendong's real position in the 1201 Institute is director, and Director Xiao Gao is deputy director.

Several leaders of the Defense Work Committee and the 12th Ministry of Machine Building are now even more curious about this equipment, of course, including comrades from the Military Communications Institute and Beijing University of Technology's related majors.

Gao Zhendong made it himself? That would be incredible.

The thing that made the comrades feel that the reverse "unworthy of its name" was already shocking enough, but that was only because Gao Zhendong took the lead and provided guidance, and he did not do it himself.

Now how astonishing is this?

Amidst everyone's curiosity, Director Xiao Gao's first sentence made everyone go crazy.

"This device is used to combine computers into a computing network, allowing any computer in the network to communicate freely with each other..."

Any computer? This is a path that comrades have never imagined before.

The modem connects to the computer point-to-point, and only one machine can be connected to a single modem at the same time.

In theory, you can only connect to other machines after disconnecting, or if you want to connect to several machines at the same time, you need to add several modems on the server side, but this equipment does not require this?
In fact, they are still constrained by the existing client-server applications. In this level of network structure, there is no concept of server. The server is at the upper level.

No matter what the comrades think, the greater impact is yet to come.

"…This network can freely increase or decrease the number of computers in the network without exceeding the maximum node limit, and the operation is simple…"

Free to increase or decrease? Sounds like just plug and play?
Well, this is good, this is good, but some comrades who have studied computer network knowledge with Gao Zhendong have already called it out.

"This is the physical layer of the computer network!" In fact, it is not that simple. The network card spans several layers, but this is their simplest way of expression.

Director Xiao Gao dropped the final bombshell: "The current transmission rate achieved is 1Mbps, and the transmission distance..."

Before he could continue to explain the transmission distance, the scene was completely drowned out by the voices of his comrades.
"1Mbps? Are you kidding me?"

“Who needs such a large bandwidth?”

"At this speed, I don't even have enough time to write the received data to the disk!"

“难怪他说19200bps是低速……”19200bps大概是20kbps，和1Mbps相比，只有对方的1/50。

This bandwidth seems too large for today's comrades.

The first to recover from the shock was a very special unit - the Military Communications Institute. Their first reaction was - the command vehicle could be upgraded!

Currently, the data transmission rate between the various terminals in the command vehicle is limited, and many complex functions cannot be realized. However, with this network device with a speed of up to 1Mbps and the special function of free networking, they can do more things.

Chief Engineer Chi and his colleagues from the Computing Institute were the most excited ones, as they knew best what this thing could do.

Chief Engineer Chi stood up and said, "Boss Gao is awesome!"

The comrades all laughed, thinking that this comrade was very down-to-earth.

The leader of the 12th Ministry of Machinery looked at Gao Zhendong and said, "So your big move is here?"

Gao Zhendong nodded and said to everyone: "Yes, the industrial communication one, even if it connects multiple computers in the form of a bus, is not suitable for building a computer network, but it is simple and cheap. And this one is a real network networking device, the basis of a computer local area network."

"Local area network?" Some comrades have never studied computer networks.

"Yes, you can think of it as connecting computers in a small area together, which can do a lot of things." Gao Zhendong explained briefly, but today was not a computer network class, so he didn't say much.

Okay, I get it. This is the computer version of strength in numbers… Some comrades may have a very simple understanding of this, but it is not wrong to some extent.

Chief Engineer Chi of the Institute of Computing Technology was so eager to ask a question that everyone was very concerned about: "What is the transmission distance of this equipment?"

Gao Zhendong gave up the stage again, and had someone else to speak for him, so he didn't have to speak for himself: "Let Director Gao report on this issue."

The comrades felt strange listening to his words, and then they heard Director Gao say: "After testing, the transmission distance of this equipment is 180 meters. At the same time, Director Gao's design has a version with a maximum transmission distance of 500 meters."

When the system provides the network card, although the maximum rate is reduced to 1Mbps due to technical reasons, the transmission distance is firmly based on the specifications of Ethernet 10Base-2 and 10Base-5, 185 meters for thin cables and 500 meters for thick cables. Although the two are different, the system has made them compatible.

The comrades looked at each other in bewilderment, this thing wasn't that close at all.

It seems that the name given by Chief Engineer Gao is really not trustworthy.

500 meters? No need, 200 meters is more than enough, the comrades thought.

"So far, so fast? Then I can put a lot of files on a special large-capacity computer, and other computers can just go there to get them when they need them. This is convenient and easy to manage, and it can also reduce the cost of ordinary work computers."

For quite a few working computers, considering the need for speed, they still try to equip them with magnetic core memory as external memory, but this thing is expensive.

Now that we have this technology, we can put all the files together and access them on demand, and the magnetic core memory of ordinary working computers can be made smaller.

"Yes, yes, yes. Even ordinary work computers do not have removable storage devices. They only have fixed storage, which is also conducive to the management of important files."

Some comrades immediately extrapolated that this was extremely important for the factories and institutes under the Defense Work Committee.

"In this way, data such as large images will be much easier to use. They can be directly transferred from the Internet without cutting or transferring."

Large pictures, databases containing large amounts of data, documents with pictures, etc., have now become the most troublesome things for comrades when using them. They are even so large that they need to be cut into pieces before they can be transferred, otherwise the storage device has to be dismantled.

The split and other commands in Unix that Gao Zhendong learned in his previous life were used for this purpose, but no one used them later.

Hearing his comrades’ creative ideas, Gao Zhendong smiled but said nothing. There are many things that can be done, but there is still something missing. Just wait, it will be soon.

Next, the comrades watched with great interest the demonstrations given by comrades from the Institute of Water Resources Science and Technology and the Computer Equipment Research Institute of Factory 1201 on five computers, and were amazed.

"Is this the network card? Is this the hub?" The comrades looked at the not-so-big network card in the computer case with great interest and found it very magical.

This thing is bigger than the network card Gao Zhendong used in his previous life, but not as big as a dual-fan graphics card. In short, in the eyes of comrades, this magical device called a network card is simply small and exquisite.

"Yes, this little thing is the network card, and the tin box is the hub. In fact, you can also use a T-shaped three-way plug to connect without a hub, but the reliability will be worse that way."

If a bus connection is used without a ring network, the reliability is actually very poor. If the cable of a node in the middle is broken, the network will be cut into several sections.

(End of this chapter)