Chapter 73: Why is it so cool when the wind blows?
The basic input and output are all normal. Gao Zhendong gave himself a thumbs up. This BIOS was built bit by bit using the binary instructions of the lowest-level machine language. It took a lot of effort.

Although assembly was used as an aid in the process, the compilation from assembly to binary instructions depended entirely on manual table lookup. If it were not for the comprehensive strengthening of the system, he would not have been able to complete this job by himself in a short period of time.

Why not use an assembler compiler? The reason is simple - there is no such thing yet, and he is still waiting to compile it. Without BIOS, he cannot program an assembler compiler on the computer. It's very confusing, isn't it? It's a bit like the question of which came first, the chicken or the egg.

From 0 to 1, it is so difficult.

Next, it is the assembly compiler, the basic working environment of the loop guard, and the text editor.

With these three things, transistor computers can be used more conveniently.

For the text editor, Gao Zhendong plans to use an editor similar to vi. vi is a command line text editor widely used under Unix/Linux. It can only edit characters, cannot control fonts, and cannot perform complex typesetting of paragraphs.

Many of its operations seemed very anti-human when Gao Zhendong was studying in his previous life. In fact, that was the result of compromises that had to be made in the early days of computers and operating systems due to the simplicity and primitiveness of computer systems.

To give a simple example, the simple operation of selecting a line with the mouse and then pressing Ctrl+C to copy it is completely completed in vi through the combination of arrow keys and commands, because there was no mouse when vi was first created.

But this thing is already the best editor with a pure text interface, especially in 1959, there is no other.

Fortunately, when Gao Zhendong was learning assembly language in his previous life, he was inspired to implement a simple vi-like editor by himself. It was because of this that he was noticed by his instructor and joined the instructor's research group at the end of his sophomore year.

Thanks to his super brain strengthened by the system, he remembered this thing very clearly. It just so happened that 8008 was highly compatible with the assembly language used in his previous life's assembly language textbook, so it didn't take too much effort to write a vi-like program.

The compiler of assembly language is easy to implement. Strictly speaking, each instruction of assembly language is a mnemonic of the lowest-level machine language binary instruction. The two are basically one-to-one corresponding. To implement it, in principle it is not much different from looking up a table.

Gao Zhendong was very satisfied with his recent achievements. He waved his hand and put the whole set of things into the storage. This treasure could not be seen by anyone now.

Outside the southeast window of Gao Zhendong's room, a figure hid there for a long time, listening to the "beep, beep, da. da. da." sounds from inside. The expression on the figure's face changed. When he heard Gao Zhendong open the door of the south room and enter the living room, he carefully retreated towards the courtyard.

The next morning, Gao Zhendong was writing furiously. It took too much time to adapt the book on project management.

Just then, someone he hadn't seen for a long time came to see him.

Lin Lianwei, his classmate, had a good relationship with him and after graduation he went to a research institute of the 12th Ministry of Machine Building.

Gao Zhendong was surprised and delighted: "Lian Wei, how come you have time to come to my place?"

Lin Lianwei said: "To be honest, I want to learn from you today."

Gao Zhendong didn't find it strange. It was normal for classmates to ask each other for advice.

The two chatted about some things that happened after they joined the work, and then Lin Lianwei raised his own question: "Zhendong, your steel mill has a lot of high temperature environments, right?"

Gao Zhendong nodded: "Not a few, what do you want to ask?"

"Then you should have done some research on cooling, right?"

"Cool down? Cool down what? Steel plate?" Lin Lianwei's question was a bit confusing, so Gao Zhendong could only talk about what he was familiar with.

Lin Lianwei's job requires confidentiality, so he cannot speak directly. After thinking about it, he organized his words and described it to Gao Zhendong in the clearest possible terms.

"For a small device, the temperature should be lower than the ambient temperature, and the lower the better."

This was still not the complete answer, so Gao Zhendong had to try asking.

"Liquid cooling?"

"No, we can't immerse it. And even if we use a heat sink, the full set of liquid cooling is heavy."

"Air cooling?" "No, the temperature can't be lowered below the ambient temperature." When answering this question, Lin Lianwei was thinking in his mind that the wind was strong, but not only could it not lower the temperature below the ambient temperature, but it would cause aerodynamic heating.

"Liquid nitrogen?"

“High cost, poor storage durability, and poor reliability.”

"Semiconductor." No, you can't ask that. This thing only appeared around 1960, and the hot end of the semiconductor refrigerator still needs to dissipate heat. This would make it like Da Vinci's solar flashlight, a complete waste.

Gao Zhendong thought about it and asked tentatively: "Do you want it to be small and light?"

"Yes, it also needs to be highly reliable, energy-efficient, and durable."

"Storable? How long? Is it for repeated use?"

"Save it for a few years, all at once."

"Regular use?"

"move."

What do these requirements sound like? They sound familiar.

Gao Zhendong thought carefully about the current year and time, and then remembered that he was going to the research institute of the 12th Ministry of Machine Building. It suddenly dawned on him what he wanted. No wonder he couldn't say it directly.

——Infrared seeker cooling for air-to-air infrared combat missiles!!

As a military fan, Gao Zhendong is quite familiar with the evolution of domestic air-to-air missiles. Not to mention the Thunderbolt 1, which is a copy of its older brother, the K5M, but the K5M itself is unusable.

In 58, a Citigroup AIM-9B "Sidewinder" infrared combat missile launched by a fighter jet on the other side of the strait in an air combat was discovered along the coast. It was basically intact. The country organized surveying and mapping to copy it, but failed due to weak technology. The later Thunder 2 air-to-air infrared combat missile was copied from its big brother K-67 in 13. Interestingly, the birth of K-13 has a lot to do with the "Sidewinder" mentioned above.

This might be what Lin Lianwei and his team were doing. The lead sulfide infrared seeker is not sensitive enough to track infrared signals, and needs to be cooled to increase the temperature difference.

Not to mention 59, even the Thunderbolt 67 that was successfully copied in 2 had the same problem, but it was not as serious. The basic solution to this problem was not until 78 when the Thunderbolt 2B improved version was launched.

Although he guessed it, Gao Zhendong couldn't say it directly.

Fortunately, he knew the cooling technology principles of early infrared seekers.

He pretended to think for a while before speaking: "The requirements you mentioned are basically completely different from the cooling environment conditions in our factory."

Seeing Lin Lianwei's disappointment, Gao Zhendong continued, "But I do know a way."

Lin Lianwei was delighted: "What method?"

"Compressed air. If you want high reliability and long-lasting storage, then use compressed nitrogen."

Lin Lianwei, who had just been happy, became deflated again: "Aren't you still using air to cool the surface? What's the difference between that and using the wind to cool it down?"

Gao Zhendong took out a piece of paper and said, "Hey, you are thinking in the wrong direction. Just listen to me. It's right."

After saying that, Gao Zhendong began to write and draw on paper.

　Actually, regarding the matter from 0 to 1, some things were omitted. But I guess no one will read those things if I write them down. They are too boring, and I will probably go crazy if I read them again. I will cry to death, so I will omit them.

　　
　
(End of this chapter)