Chapter 45 Governance of the Reclaimed Places Computers and video cameras

After the Joseon king signed the "Armistice Treaty," Wei Xiang rushed to the Taedong River and, in the presence of the North Korean envoy, personally issued an order: The Korean officers and soldiers in Pyongyang could cross the Taedong River and return to the Korean side as long as they laid down their weapons. But if there are those who are willing to stay on the west bank of the Datong River to be the subjects of the Ming Dynasty, we welcome to stay.

What the North Korean envoy did not expect was that one-third of the North Korean officers and soldiers were willing to stay on the west bank of the Datong River and be a member of the Ming Dynasty.

The North Korean envoy stopped doing it again and protested to Wei Xiang: "General Wei, I protest!" You must send all the North Korean officers and soldiers across the Taedong River! The treaty says that you agreed to the evacuation of all the North Korean officers and soldiers besieged in Pyongyang. ”

Wei Xiang, who was sitting on the deck of the warship, was not angry at this time, and said in a gentle tone: "Your Excellency, don't be impatient!" Aren't we abiding by the treaty? I have ordered that all the officers and men of the DPRK lay down their arms and cross the Taedong River and return to your DPRK! We also have the convenience for you to cross the river by boat! Isn't that our kindness? ”

"But you still took in a lot of North Korean officers and soldiers, and you didn't put them back." The North Korean envoy emphasized those who did not cross the river.

"This is not a violation of the treaty," Wei Xiang said tepidly, "We will help send those who are willing to leave, and we will welcome those who are willing to stay." Your Excellency, if you are willing to stay in our Ming Dynasty, we welcome it! ”

The North Korean envoy was angry, but what surprised him was how the general in front of him could suddenly change like a person, with a kind attitude and peaceful speech, and it was completely two people who had seen it the first two times. The North Korean envoy suddenly figured out that this Wei general was deliberately making a mistake and making it impossible for him to give full play to his tongue. This is also because he has a strong military backing in his hands, and he doesn't want to bother to talk more. Now it's different, he's appreciating his masterpiece, and it's tepid.

The North Korean envoy understands even more that there is no way for this general to be willing to make a mistake, and he has to accompany him if he makes a mistake, which is determined by strength. So he stopped talking.

In the last count, there were more than 15,000 Korean officers and soldiers left. Wei Xiang was overjoyed and said, "We need these strong laborers so much!" One of the things that was done right away was to cut down the wood, nail the stakes to the border line and pull the barbed wire. Then on both sides of the barbed wire, a five-hundred-meter isolation strip was left. The trees in the barrier are to be cut down. Only a few passing passes are left at the border. DPRK officers and men must be paid for their participation in labor, and their meals are carried out in accordance with the standards of our officers and men. The Korean prisoners were willing to participate in the reorganization of labor, and the road repair work was arranged separately. Food is guaranteed, but there is no pay. Good performance can be released early. ”

On the North Korean side, many cadres could not be dispatched to Yaogang for the time being, so military management was implemented. Some of the troops brought by Wei Xiang were left to guard the border, and the others were assigned to various places for military control.

According to Wei Xiang's request, Yaogang agreed to open irregular routes from Zhenjiang (Dandong) from the mouth of the Yellow River to the Yalu River, Pyongyang from the mouth of the Datong River, and Xin'anzhou on the Qingchuan River. In this way, the place where Korea was redrawn was more closely linked to the Ming Dynasty.

Wei Xiang also suggested that a new administrative capital should be established in this newly zoned area, which will be called the Yalu River Capital Division. Yaogang also thinks this suggestion is very good and completely agrees.

However, Mr. Lu Bingyi, who returned to Yaogang from Taohe, suggested that an expedition team be sent to Liaodong, Nuergan and this Yalu River capital to conduct a unified investigation. Then make a unified construction plan. Because of the new Yalu River Metropolitan Division, it faces the Sea of Whales (Sea of Japan) to the east, and many ports can be built there. According to the information of the Ming Dynasty, Yuanshan was suitable for the construction of a deep-water port. There is also a major problem, that is, the Songliao Grand Canal needs to be designed as soon as possible, and construction should start immediately. This is the backbone project of Liaodong and Nuergan, and many constructions can be started around the canal.

In fact, Zhang Zhimu knows that there are iron mines in Anshan and Qinghe (Benxi), which are suitable for the construction of large-scale steel plants. However, it is not yet possible to say, just wait for Lu Bingyi to send an expedition team, remind them to bring the prospecting team, and at the same time suggest that they go to Anshan and Qinghe to conduct careful exploration.

Due to this period of time, there were more military actions in Yaogang, Zhang Zhimu told Yang Yulin that there were no too important things to block, and he had to spend some time on military affairs. In fact, there are not many things that Zhang Zhimu needs to do, but Zhang Zhimu just feels that his heart is not very calm and he doesn't want to worry about other things.

However, Zhang Zhimu picked up the internal reference and saw a message, and his eyes suddenly lit up. It turned out that Yang Chang and his team had finally made two kinds of pressure sensors and pressure instruments made with this pressure sensor after several years of hard work. Zhang Zhimu knows too well what this means? Asked Yang Yulin: "Hey! Has Yang Chang been looking for me recently? ”

"Looked!" Yang Yulin said, "Didn't you say that there is no big thing that will not bother you?" ”

"Hey! Yang Chang's affairs are not small. Zhang Zhimu said, "Hurry up and connect Yang Chang's phone to me!" "Zhang Zhimu knew such a big thing, it was impossible for Yang Chang not to inform himself.

As soon as Yang Chang's phone was connected, Zhang Zhimu asked Yang Chang: "I looked at the internal reference, can your pressure sensor be used?" ”

"Hey! Mr. Zhang, I reported this to you as soon as possible, but I was blocked by Miss Yang. This kind of sensor is simply so good that it can directly output an electrical signal. Now there are two kinds, one is made of quartz crystals, and the other is sapphire and silicon wafers welded together. Each has its own merits. In addition, we also worked with Master Qingfengzi to study the new crystals to see if there were any new crystals, and if the new crystals had any new characteristics that could be used by us! The piezoelectric ceramics you mentioned are also being developed, but there is no breakthrough yet! ”

"Technological progress must be accumulated slowly before there can be a breakthrough." Zhang Zhimu comforted.

"That's right! It's all old news, you have time to come and look at our computers, and now you can count! Yang Chang threw Zhang Zhimu a surprise.

"Ahh That's great! I'll go right over. Hearing that Yang Chang's computer could count, Zhang Zhimu really couldn't sit still.

In front of Yang Chang's office building, Yang Chang was waiting for Zhang Zhimu, "Mr. Zhang, this is a major progress. Computers can do the math, and they will be able to do more things in the future! ”

"Let's go! Show me how this guy counts! Zhang Zhimu didn't care about being polite to Yang Chang.

followed Yang Chang to their computer room, which was actually a large hall. Zhang Zhimu saw that there were many cabinets against the wall in the computer room, and Zhang Zhimu knew that it was the circuit part of the computer. Seeing Zhang Zhimu and Yang Chang coming in, the group of people gathered in front of a table all stood up. Zhang Zhimu saw that they were looking around at a digital monitor and a keyboard.

Walking over, Zhang Zhimu hurriedly said, "Count me a number, three thousand five hundred and fifty-six plus two hundred and thirty-six!" ”

A person pressed a button, cleared the digital display to zero, and then pressed the key to enter 3556 and pressed a plus key, the digital display was cleared again, and then used the keyboard to enter 236, after pressing the equals sign, the digital display cleared again and waited for a while, and immediately displayed 3792.

Zhang Zhimu suddenly sounded, and he couldn't verify it, and at this time, a man in a white coat in front of the table handed an abacus to Zhang Zhimu. Zhang Zhimu tugged, and the data was 3792. They were given a few more subtraction, multiplication, and division operations, and the computer could quickly calculate them. Zhang Zhimu gave them another prescribing calculation, and as a result, the people around them all laughed.

Zhang Zhimu asked, "What's wrong?" What are you laughing at? ”

The person who just pressed the keyboard said, "Mr. Zhang, we haven't finished debugging that subprogram yet." When you come in, we're debugging this presquare operation. There is still a bit of a problem, it is not adjusted! ”

"It's okay! Never mind! Zhang Zhimu said, "The basic calculations above show that your computer is already a real computer!" With this foundation, complex calculations can be solved by taking time to program them. This is a revolution and you are off to a good start. This also shows that our efforts over the years have not been in vain? You've been working on computers for a few years, right? ”

Yang Chang said for them: "Yes, Mr. Zhang! These people have been developing computers for four or five years. Seeing that others have achieved a lot of results in other things, they are very anxious. It's not like it's finally boiling out and nodding! ”

Zhang Zhimu said to these people: "The truth that God rewards diligence is always like this. Your work will soon show its value, and I tell you, this computer is definitely more than just doing the math of data. He will have a very far-reaching impact on the life of our entire society in the future. Let me give you a simple example! For example, in our Hutuo River Reservoir, the water flow control of the turbine is controlled by a computer. We can turn the speed of the turbine into a data, input it into the computer, compare it with a data we set, the speed is greater than this predetermined value, our computer outputs a control data, close the control gate to reduce the water flow, if the input data is less than this data, we also output a control data, increase the water flow, so that the input data is always controlled and we set the data consistently. Is it possible to achieve automatic computer control? Of course, we need to make sure that the reliability of the computer is high enough. But these are the paths we have to take in the future. This kind of thing will play a role in all aspects of our life and production. You're just getting started! ”

Zhang Zhimu's words made it clear that these people who don't know how much effort they have spent on building computers all feel that it is worth it, and they all feel that the prospects are broader.

Zhang Zhimu saw that everyone's mood was good, and said, "You continue to debug your program, and I'll see your operation." ”

These computer workers began to take out a stack of paper to write out the hexadecimal data translated by the program, press an address code, and then enter the data, just like the TP801 single-board computer used by Zhang Zhimu in his previous life. Although the method is very stupid, it has made a lot of progress, which shows that the underlying monitoring program in this computer has been fully debugged. That's a lot of progress.

After seeing them using this computer, Zhang Zhimu suggested: "You should connect the CRT monitor to this computer as soon as possible, and edit the program through the screen, and the program can be printed out through the printer, so that the program is very intuitive, and it is much easier to debug complex programs." ”

Yang Chang said: "We still have two people who are solving this problem, in fact, the screen display and the printer connection are realized with serial communication, and we are using telegraphs all over the country, so the problem will not be very big." ”

"Good!" Zhang Zhimu said, "Your memory capacity will be expanded, and the two Ks are really smaller." "In fact, the current two-K memory is already composed of circuit boards in several cabinets.

Yang Chang said: "Recently, they have made a lot of progress in semiconductors, the integration has been greatly improved, and the memory problem is easy to solve." ”

Zhang Zhimu said to the people around him who are engaged in computers: "In the future, the subprograms you commonly use must be standardized." It can even be cured into a standard procedure by means of a mask, like a monitoring program. That way they don't take up memory. ”

A technician engaged in computing asked, "Mr. Zhang, is the next step for us to continue to develop new programs?" ”

"You've got a lot to do!" Zhang Zhimu said, "First, your computing speed is not high, so you must increase the main frequency." After the main frequency is increased, you will encounter problems that are not encountered at low speeds, such as whether synchronization is affected, how interference is, and whether reliability is affected. Also, your current program is to use the method of looking up the table, find out the machine code, and write the program directly. It's just too inefficient. In the future, you will also have to develop a compilation system, for example, this assignment instruction, the purpose of which is to pay the data from this address to another address, can you use a command that is easy to understand. I look at the English text, we use the keyboard to deal with simple. You use a MOV instead. Isn't it very simple to transfer the program address pointer with a go, you can write a program with such common instructions, no matter who reads it, it is clear at a glance, and knows what each instruction is for. Now you can program and manually translate the data into your direct use. In the future, you can also make a special program to directly translate these words into machine code, which is called a compilation system program. After these things are done, you people who specialize in programming can not care about which data is put to which address, and these things can be managed by a complete compilation system and system programs. So what you have to work on is the system program and the compilation system. The system program is perfect, and you can even train some people who specialize in programming with these instructions to do specific programs, they don't need to know what data works in the computer, they just know what kind of instructions can be entered to get what kind of results. ”

Then, Zhang Zhimu introduced to them the common instructions of assembly language, which can be combined to complete complex tasks as needed. Then there's the simpler, high-level language. Zhang Zhimu introduced them to the basic sixteen instructions of the BASIC language. Tell them that with these sixteen instructions, it is theoretically possible to complete all the problems that the computer program needs to solve. At the same time, tell them that if your computer can use high-level computer language, it means that you have reached a new level, and computers can enter our lives.

After listening to Zhang Zhimu's introduction, these computer people can see the direction of the future, but they know that the future is still a long way to go, and it will take a long time to realize what Zhang Zhimu said.

Yang Chang said: "There is still a lot of work to achieve this. A lot of our graduates this year were assigned to the computer side, but the new students didn't know much about the role of computing, and it was very unstable, so I forced them to stay here. If only they understood what a computer does! We also need to strengthen the computer side. The work on the computer's side can also be broken down in the next step, so that the progress may be faster. ”

Zhang Zhimu is very satisfied with Yang Chang's work, this is a very smart person, and now he is no longer trapped in any specific work, and has completely entered the state of organization and coordination!

Although the development of computers has been very fast, Zhang Zhimu knows that there is still a long way to go before it reaches practical application, but in this direction, it is necessary to strengthen the force, and he knows too well what a big impact the computer will bring if it breaks through. It is likely that many links in the industrialization process can be omitted, and even reduce the damage and impact of many industrialization processes on the environment.

Zhang Zhimu is full of expectations for computers, but Zhang Zhimu knows that patience is needed!

After a full discussion with these computer people, Yang Chang led Zhang Zhimu to the laboratory that engaged in video cameras, this project was very important to Zhang Zhimu, and he had been engaged in it for a long time.

Zhang Zhimu came to their laboratory and saw that these people here were listless, sitting at their desks, they couldn't lift their spirits, and there were a lot of experimental devices piled up on the workbench in the middle of the laboratory, but no one was using them.

As soon as he came in, Yang Chang's face was a little unbearable, and he shouted at the leader of the experimental group: "Hey, hey! Liu Jifa, what's the matter with you? What are you doing here? ”

The team leader named Liu Jifa quickly stood up and said, "Oops! Mr. Zhang, Mr. Yang is here! Me, we're resting! ”

"Rest!" Yang Chang'er was even more angry, "What time is it for you to rest?" You can say it! Look at how busy everyone else in this building is, and you just rest in the daytime? ”

That Liu Jifa lowered his head when Yang Chang said and didn't dare to speak. Zhang Zhimu felt that something must be wrong, so he stopped Yang Chang and said, "Yang Chang, don't worry, let everyone talk slowly." You're in such a hurry that people can't speak! ”

Liu Jifa asked people to bring the stool, and after Zhang Zhimu and Yang Chang sat down, Liu Jifa said, "Hey! Mr. Zhang, my project leader is unqualified! Our cameras haven't come out for so long! So that everyone can't look up! ”

"You've been working on this thing for as long as you have on the computer." Zhang Zhimu said, "It's been a few years, and they have only seen some results this time!" Tell me what problems you're experiencing? ”

"I can't get an image out of it until now!" Liu Jifa lowered his head and said very depressedly.

"Does your output signal respond to the light?" Zhang Zhimu asked.

"That's a bit of a reaction! But on the monitor, there is no image. Liu Jifa said.

"I'll see, do you add your camera to electricity, let's see together." Zhang Zhimu said.

"Good!" Liu Jifa heard that Zhang Zhimu wanted to see it for himself, so he hurriedly said yes.

They powered the camera on the bench and the monitor that followed.

After heating for a while, Zhang Zhimu saw that the monitor was still a white noise, and there was no signal to transmit it. I took off the video signal connector and reconnected it, and the monitor seemed to have a little signal, but the signal was also white noise.

Zhang Zhimu asked people to light up a large light bulb and shine in front of the camera lens, and the monitor began to produce distorted patterns, Zhang Zhimu adjusted the focus of the lens in the past, and there seemed to be a black signal on the monitor, but it was constantly distorted.

Liu Jifa and they looked at it and let out an exclamatory voice, "Huh! We haven't signaled like this before! ”

Zhang Zhimu went over to adjust the frame synchronization and field synchronization, and there was a distorted image on the monitor, although it was very blurry, but it could be seen that there was an image. Liu Jifa and the people around them were very excited.

Zhang Zhimu said to them: "In fact, you have reached the peak of success, and you are one step away from reaching the top!" But in the next step, no matter how Zhang Zhimu adjusts it, the image is also distorted up and down, and it can't be stable at all.

Zhang Zhimu said to Liu Jifa: "Now there are several possibilities, one is that our monitor has low sensitivity, and the synchronization signal of the field synchronization frame cannot be recognized, and then the synchronization signal of the camera is not good." You work hard in both directions! I see success at hand, don't be discouraged! ”

"Good!" Liu Jifa said excitedly, "Mr. Zhang! We're really working on cameras day and night. But there has never been an image of Fang Cai, and I really tried all the ways. It's made everyone lose confidence! ”

Zhang Zhimu smiled and said: "Engaging in science and research requires rigorous efforts, and sometimes, it also needs a little luck!" I had good luck today. Hehe! "Actually, Zhang Zhimu can't say that this is what I practiced by repairing TV sets for others in my previous life. In fact, Zhang Zhimu also saw that the image was stable, and the signal-to-noise ratio was too small. It is likely that the signal is drowned in the noise, and then the problem of the snowflake noise needs to be solved. However, Zhang Zhimu knows that he can't say too much now, and things have to come step by step.

Seeing Liu Jifa and a group of them gathered in front of the camera again, ignoring Zhang Zhimu and Yang Chang at all, Zhang Zhimu waved his hand to Yang Chang, and they retreated.

Out of the door, Zhang Zhimu said: "Yang Chang! You are also engaged in this background, and when you encounter such a thing, don't be too impulsive. Our brethren are not lazy and slippery. When we are engaged in scientific research, sometimes we can't do it anymore, so we have to let it go. ”

"Yes, yes! I'm a little impulsive," Yang Chang said, "I watched them do experiments yesterday, and today suddenly no one is doing anything, and I'm a little angry!" ”

The two came to Yang Chang's office, and Yang Chang reported on the work of the previous period.

Hydroacoustic detectors and radio detectors have been taken to the ship by Shi Tao for testing.

Radio navigation instruments, which are used in airfield towers, are also very useful for testing aircraft navigation. Now the delta-wing aircraft is equipped with radio navigation equipment, and it can fly back to the airport as far as it can fly according to the direction indicated by the radio navigator. Higher-power radio navigation transmitters are being produced and are ready to be tested on the coast next year.

The experiment of multi-modulated communication relay communication over coaxial cable is ongoing, and if this experiment is successful, the number of long-distance telephone communication telephone lines can be greatly increased. The call quality will also be greatly improved. With an auto-dialer exchange, the use of the phone will be more convenient.

Regarding the power supply of the telephone repeater, Zhang Zhimu gave several suggestions, one is to use power cables and communication lines to wiring together to supply power to the repeater. In addition, it is used in places where power cannot be supplied in the field, and wind power generation or even diesel power generation can be built nearby to supply power to the battery to ensure the supply of power to the repeater. Especially in unattended places, the power supply of repeaters is really a big problem. These will have to be considered on a case-by-case basis.

Zhang Zhimu is very satisfied with Yang Chang's work, it is really the right person, and he can advance his career a big step.

Zhang Zhimu, who was very satisfied, returned to the office, Yang Yulin said: "Emperor Chongzhen has arrived in Kaifeng, but they have to go to the newly built canal to have a look, and they can come to Yaogang in a few days!" However, a telegram came back from the ship saying that they had come in quite a few people! A boat didn't sit down, and there were barges that followed! ”

"It's okay, a few more people just a few more pairs of chopsticks!" Zhang Zhimu said, "I'm afraid that they won't come!" ”

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New progress in "Memories of the Southern Song Dynasty": the Battle of Yashan, the defeat of the Yuan army, the counterattack of the Song army, and the landing in Fuzhou.