Chapter 665 The Emergence of New Demands
In a certain institution in the capital, some comrades are working hard.

This agency is a subordinate agency of the Ministry of Internal Economic Affairs and is responsible for domestic economic statistics and analysis. On the one hand, it can grasp the current status of various domestic economic indicators, and on the other hand, it can verify the operation and effects of various policies and provide a data basis for the adjustment and improvement of policies and measures.

Before 1960, this work was extremely slow. If economic data were read out slowly over the phone, they would have to give up everything else and just sit in front of the phone every day listening to others read out the numbers.

This is unrealistic, a waste of time, and has a high probability of error.

In this case, the transmission method with the largest bandwidth has to be used: paper forms are sent up level by level using transportation, and each level will compile the data within its own jurisdiction, and finally send it to a national agency for summary.

After 1960, the situation improved somewhat. At least at the provincial level, computers began to be used to store and process data. If nothing else, at least the data carriers to be transported changed from paper materials to magnetic tapes, and a magnetic tape could hold many data spreadsheets.

This method is actually very slow, but at least the probability of data errors is much smaller. The advantage of computers is that once the data is input, the probability of problems with the original data during the processing is much smaller, because it is all processed automatically by computers, not manually transcribed and summarized.

If you copy manually and move the decimal point one place to the left or one place to the right, it will cause big problems.

How slow were they? In the fourth quarter, they were still compiling the data for the second quarter. This was actually a very efficient process. Without computers, the time would not necessarily be longer, but more manpower would be invested, and the probability of error would be greater.

Fortunately, the economic data at this time is much simpler than that of decades later. Apart from other things, there are far fewer items and categories. Otherwise, it would be even slower.

More importantly, from the provincial level upwards, reporting is no longer done by humans riding public transportation; instead, it is transmitted directly via modems.

There is no solution below the provincial level, and manpower has to be sent up. The DJS-60D is still a bit expensive, and general regional-level banks may not be able to use it, and there is not enough technical force below to operate it.

Most regions have set up computer centers equipped with some DJS-60Ds, which allow departments without computers to apply for the use of computers when necessary. However, for statistical agencies, this method is not so convenient and they may not be able to get computer time.

Comrades from the statistical agency were working busy on computers. At their level, they had computers and had also commissioned relevant colleges and universities to write some programs for the statistical work.

While operating, several people were still communicating.

"With this, the statistics are indeed much faster."

"Yes, although after the results are produced, the categories and names need to be re-matched, but at least the statistical analysis process is much faster and saves a lot of trouble."

The computer capabilities of the ministry-affiliated colleges are still limited. Many functions are barely usable, and some functions cannot be realized. As for ease of use and friendliness of the human-computer interface, there is no need to mention it.

For example, since they cannot put character data and numerical data into the same file, the data table is full of numerical data, and character data such as various categories and names are all replaced by numbers. After outputting the results, another program is needed to read out the data, re-match the original categories, names, etc. according to the different numbers, and convert the statistical results into characters, and output them to a text file before they can be used.

If the data in this text file is to be used for statistical analysis again, either the intermediate results must be used or they must be converted again. In short, the data, results and applications are separated.

"It would be great if the relationship between data could be managed automatically. The current system is still a bit inconvenient, and there are too many places that require manual intervention. Now, if there is any slight change, the software must be changed, which is quite inconvenient."

"Don't be ungrateful. The university has done its best. At least it's better than before and saves a lot of trouble."

"That's true... In my opinion, the biggest problem with these software is that the data is not universal. It took a lot of effort to make it universal among these software. Not long ago, the Ministry of Foreign Trade sent some of our data to them, but they couldn't read it. In the end, they had to print it out with our software and re-enter it according to the paper materials before they could use it."

"They are lucky. The data from the Ministry of Foreign Trade is small, and the types and quantities are very simple. As long as it does not involve domestic data, they have it much easier than us."

At this point, a comrade suddenly had an idea: "Hey, boss, what do you think? Can we work together with the Ministry of Foreign Trade to develop a software to solve these problems?"

"The Ministry of Foreign Trade shouldn't have such a big demand, right? They have less data, so it's easier to handle."

"Boss, some problems have nothing to do with the amount of data, such as the problem of data not being universal. Besides, the amount of data they have now is small, and it will be small for a lifetime. Besides, they seem to have a good relationship with the computer comrades."

In the eyes of people at that time, "working on computers" = "working on software". In fact, this idea is wrong. Although the two are not completely unrelated, they are at least clearly distinguished from each other.

In fact, even decades later, there are still many people who hold this idea.

In fact, asking a programmer to repair your computer is probably not as reliable as asking a garbage collector or an Internet cafe administrator.

As for "good at computer repair and single until old age", that is another sad story.

The boss thought about it and found this suggestion interesting.

"Well, I'll go back and report my work to the leaders in the department and give it a try. Maybe it will work. I heard that better computers will be distributed. The current one is useful, but I always feel that it's a little lacking and a bit of a waste." The National Defense Committee and the 61th Ministry of Machine Building have joined forces to start using DJS-59 to replace the DJS60/D in various units, and the news has spread.

It's mainly about the production and price of DJS-61. Even if 1274 doesn't increase its production capacity specifically for it, it's actually much higher than DJS-60D and others.

To use a pay-to-win game as an analogy, if transistor computers before the DJS-60D relied on collecting fragments to piece together a computer, then the DJS-61 is just the opposite, where a device is disassembled and each fragment is a computer.

Gao Zhendong didn't know that with the gradual popularization of computers, some people have automatically generated new demands. He is now holding a small meeting with his comrades who are working on radar in the reception room of the third factory.

They are Mr. Liu and his team who are working on fighter jet radar.

The project has already started, and Mr. Liu and his team have already made a complete preliminary plan, and even used computers to simulate and calculate some parameters.

Good news: the traveling wave tube has been made and it works very well.

The bad news: The antenna is a bit disappointing and doesn't perform well.

"Chief Engineer Gao, the traveling wave tube you designed has a much higher gain than the magnetron we use now, and its frequency control is more precise. We have tested it and found that it is much more powerful than the magnetron as a power amplifier for pulse Doppler radar."

"As long as it works, the signal source problem is basically solved. Is it 70dB or 40dB?"

"70dB, 40dB has a smaller gain. Although the 70 is larger and heavier than the 40, it is still worth it overall."

Gao Zhendong thought for a moment and said, "Show me the block diagram of your current radar signal amplification system."

Mr. Liu doesn’t know what Gao Zhendong is up to. It seems that he is not very satisfied with 70dB?

He turned to the radar signal amplification system part of the plan and handed it to Gao Zhendong.

Their solution is to generate the signal, pass it through a power divider, then an equalizer and regulator, and finally amplify it through a traveling wave tube with a gain of 70dB.

Gao Zhendong carefully calculated it in his mind and gave his opinion.

"Stop the 70dB and start with the 40dB."

This suggestion confused Mr. Liu. The greater the gain, the better. A 40-meter gain is definitely not as good as a 70-meter gain. Connecting two 40-meter gain units will increase the complexity of the system, and the total weight and volume will be larger than a 70-meter gain.

"Chief Engineer Gao, is 40 a little too small?" Chief Liu asked tentatively.

Gao Zhendong shook his head: "Use two, and amplify them in two stages! I know what you are worried about. From the perspective of the ratio between volume, weight, cost and gain, two 40s are indeed worse than one 70, but you have overlooked the most important issue - signal-to-noise ratio."

"Signal-to-noise ratio? The gain of a traveling wave tube is the same for both signal and noise. It won't change the signal-to-noise ratio much, right?"

Gao Zhendong wrote the formula on the blackboard and said, "No, my opinion is that the signal should be amplified by a 40dB traveling wave tube first, and then after the loss of the power divider, equalizer, and regulator, it should be amplified by a second 40dB traveling wave tube. From the formula, we can see that the signal-to-noise ratio of the two is very different."

Seeing Gao Zhendong finish the calculation on the blackboard, Mr. Liu and the others were stunned. This was really different.

"No way? Chief Engineer Gao, the signal-to-noise ratio can be almost 20 dB different?!"

20dB, this data is amazing.

Gao Zhendong laughed and said, "Counterintuitive, right? Haha. This is related to the output noise formula of the traveling wave tube. It's normal that you are not familiar with it. You have never come into contact with this thing before. If you don't believe me, you can calculate it yourself."

Mr. Liu didn't believe it, so he calculated it himself according to the formula, and it was indeed about the same number.

"Boss Gao, you are amazing. You just split the traveling wave tube into two and significantly improved the signal-to-noise ratio!"

Mr. Liu has always been very impressed with Gao Zhendong, but he did not expect that Gao Zhendong would make him more impressed every time.

(End of this chapter)