Chapter 73 Why is it so cold when the wind blows?
Basic input and output are all normal. Gao Zhendong gave himself a thumbs up. This BIOS is all binary instructions in the lowest level machine language that he put together bit by bit. It took a lot of effort.
Although assembly was used as an auxiliary in the process, the compilation from assembly to binary instructions relied entirely on his manual table lookup. If it were not for the comprehensive strengthening of the system for him, he would probably be able to do this job alone in a short time. I really can't do it.
Why not use an assembly compiler? The reason is very simple - this thing doesn't exist yet, and it's still waiting for him to compile it, and without BIOS, he can't program an assembly compiler on the computer. It's very confusing, right? It's a bit like which came first, the egg or the chicken. That taste.
From 0 to 1, it is so difficult.
Next, there is the assembly compiler, the basic working environment for loop duty, and the text editor.
With these three things, transistor computers can be used more conveniently.
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 edit paragraphs. Complex layout.
Many of its operations seemed very anti-human when Gao Zhendong was studying in his previous life. In fact, they were the result of compromises that had to be made in the early days of the birth of computers and operating systems because of the simplicity and primitiveness of computer systems.
To give a simple example, in later generations, the simple operation of selecting a line with the mouse and then copying it with Ctrl+C was completely completed in vi by a combination of arrow keys and commands, because when vi was first born, there was no mouse. .
But this thing is already considered the best editor with a plain text interface. Especially at this time in 1959, it can be said that there is no one.
Fortunately, when Gao Zhendong was learning assembly language in his previous life, he once implemented a simple vi-like editor on a whim. It was because of this that he was favored by his instructor. After his sophomore year, I joined the teacher’s research group.
Thanks to the super brain that has been strengthened by the system, he remembers this thing very clearly. It happens that 8008 is very compatible with the assembly language used in the assembly language textbook of his previous life. If he wants to write a class vi, it will take a long time. It doesn't take much effort.
The assembly language compiler is simple to implement. Strictly speaking, each instruction in the assembly language is a mnemonic for the lowest-level machine language binary instruction. The two are basically in one-to-one correspondence. Yes, to implement it, the principle is actually not much different from looking up a table.
Gao Zhendong was very satisfied with his recent results. He waved his hand and put the entire set of things into the storage. This set of treasures cannot be seen by others now.
Outside the window of Gao Zhendong's southeast room, a figure hid there for a long time. Hearing the "beep, beep, beep, beep, beep, beep, beep, beep, beep, beep, beep, beep, beep, beep, beep, beep, beep, beep, beep, beep, beep, beep, beep, beep, beep, beep, beep, beep, beep, beep. Carefully retreat toward the inside of the courtyard.
The next morning, Gao Zhendong was busy writing. It took too much time to adapt this project management book.
Just then, a man he hadn't seen for a long time came to him.
Lin Lianwei, his classmate, had a good relationship. After graduation, he went to a research institute in the 12th Ministry of Machinery.
Gao Zhendong was surprised and happy: "Lian Wei, why do 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 at all. It is normal for classmates to ask each other for advice.
The two talked about some things that happened after they started working, and then Lin Lianwei raised his question: "Zhendong, don't you have a high temperature environment in the steel rolling mill?"
Gao Zhendong nodded: "Quite a few, what do you want to ask?"
"You should do some research on cooling, right?"
"Cooling down? Cooling down what? Steel plates?" Lin Lianwei's question was a bit confusing, and Gao Zhendong could only pick what he was familiar with.
Lin Lianwei's work was subject to confidentiality requirements and he could not speak directly. After thinking about it, he organized his language and described it to Gao Zhendong in as clear a language as possible.
“A small device should be lowered to a temperature lower than the ambient temperature, and even the lower the better.”
This is still not complete, so Gao Zhendong had to try to ask.
“Liquid cooling?”
"No, it can't be soaked. And even if the heat sink is removed, the weight of the complete liquid cooling is too high."
"Air cooling?" "No, it can't be lowered below the ambient temperature." When answering this sentence, Lin Lianwei What I was thinking was that the wind was strong, but instead of being able to drop below the ambient temperature, there would be aerodynamic heating.
“Liquid nitrogen?”
“High cost, not resistant to storage, and poor reliability.”
"Semiconductor." No, you can't ask this. This thing only appeared around 1960, and the hot end of the semiconductor refrigeration chip still needs to dissipate heat. In this way, it will become Da Vinci's solar flashlight, which is a complete waste.
Gao Zhendong thought for a while and asked tentatively: "Do you need a small size and light weight?"
"Yes, it also requires high reliability, no energy consumption, and storage resistance."
< br>"Storage-resistant? How long should it be stored? Should it be reused?"
"Save it for a few years, one-time use."
"Fixed use?"
"Mobile."
What do these requirements look like? Sounds a little familiar.
Gao Zhendong thought about the current year carefully, and then thought about the fact that he went to the research institute of the 12th Ministry of Machinery. It suddenly dawned on him that he knew what he wanted. No wonder he couldn't say it directly. .
——The infrared seeker cooling of the air-to-air infrared combat missile! !
As a military fan, Gao Zhendong is relatively clear about the history of domestic air-to-air missiles. Let’s not talk about Thunderbolt 1, which is a replica of its big brother K5M, but K5M itself is unusable.
In 1958, a Citigroup AIM-9B "Sidewinder" infrared combat missile launched by a fighter across the Taiwan Strait in an air battle was discovered on the coast. It was basically intact. Domestic organizations organized mapping and imitation, but failed due to weak technology. The later Thunderbolt 2 air-to-air infrared combat missile was the big brother K-13 imitated in 1967. Interestingly, the birth of K-13 has a lot to do with the "Sidewinder" mentioned above.
This may be what Lin Lianwei and the others did. The lead sulfide infrared seeker is not sensitive enough and cannot track infrared signals. It needs cooling to increase the temperature difference.
Not to mention 1959, the Thunderbolt 2 was successfully imitated in 1967. This problem also existed, but it was not so serious. The basic solution to this problem will not be until the Thunderbolt 2 Type B improved version started in 1978. Just solved it.
Although he guessed it, Gao Zhendong couldn't say it directly.
Fortunately, he knew the principle of refrigeration technology of early infrared seekers.
He pretended to think for a while and then said: "The requirement you mentioned is basically completely different from the cooling environment conditions of our factory."
Seeing Lin Lianwei's disappointed expression, Gao Zhendong Then he continued: "But I do know a way."
Lin Lianwei was delighted: "What way?"
"Compressed air, if you want to store it with high reliability and durability, then use Compressed Nitrogen.”
Lin Lianwei, who had just been happy, was discouraged again: "Aren't you still blowing the cooling surface with air? What's the difference between blowing it with the wind?"
Gao Zhendong took out a piece of paper: "Hey, you You thought in the wrong direction, listen to me, that’s right.”
After saying that, Gao Zhendong began to write and draw on the paper.
Actually, regarding the matter of going from 0 to 1, some things have been omitted. However, no one will read those things when they are written down. It is too boring. If you follow up, you will probably go crazy and cry to death, so I will omit it.
(End of this chapter)