Siheyuan: Starting from a fitter

Chapter 138 MOS tube

"Liberation, you all met just now. From now on, Brother Dayong will follow you to learn circuit board making. If he doesn't obey, he will go to Zhou Xiaojuan, and she will teach him." Li Guocheng added a double insurance.

"I know, Brother Li," Yan Jiefang agreed painfully. He had too many things to do right now and couldn't handle it.

"Brother Dayong, you get familiar with it first, and then I'll leave the optimization and improvement of circuit board production to you."

Li Guocheng has actually given up in his heart. Wang Dayong can only be a skilled operator in the future. It seems that he will have to find someone to improve in the future.

I asked for leave in the afternoon to see my master, Mr. Zhang, but he was not at home. No need to think, he must be at the senior brother's place.Sure enough, the two were diagnosing a teenage boy.

The reason why I didn't think of taking the master to have him diagnose himself was because I didn't want the master to go through the flood again.

"Master, do you still remember the little Douzi who had leukemia?"

"Why don't you remember! It was because of her that your senior brother and I started researching. Now the prescription is basically mature." Mr. Zhang was very pleased.

"This prescription is very important, remember to keep it secret," Liu Guocheng instructed.

"Don't worry, this prescription was originally developed by you, we just made fine adjustments. We will not spread it to anyone without your permission," Mr. Zhang solemnly promised.

"Master, I didn't mean that".

There was no other way, so Li Guocheng told his master about the patent. After hearing this, the master was very angry.

"So, we can't give away the things belonging to our ancestors, otherwise we won't be able to use them ourselves. Don't you think this is suffocating?"

"Don't worry, I'm awake." Mr. Zhang's eyes were firm.

Then Li Guocheng explained Xiaodouzi's current condition to Mr. Zhang and his elder brother.

"This is the consequence of worshiping foreigners and favoring foreigners," the elder brother said angrily after hearing this.

"Don't speak nonsense," Mr. Zhang said sternly.

"I understand." The senior brother was like a primary school student in front of his master, not daring to make mistakes.

"From your description, if we follow the stage classification we made together before, it should be in the advanced stage. The current treatment plan should be to condition the body first and then treat the leukemia." Master Zhang Lao talked eloquently, and it is obvious that We have encountered enough cases recently.

"I think so too," the senior brother agreed.

So the three of them sat together and began to debate. Based on Xiaodouzi's physical condition, they quickly formulated two prescriptions, one for regulating the body and one for treating leukemia.

According to Li Guocheng's description, Mr. Zhang did not ask to follow him. He is really a mature man.

Seeing that it was getting late, Li Guocheng went directly to Song's hometown.

"Good work, good work." Mr. Song was very excited. He didn't see the young woman surnamed Tian today.

Seeing Li Guocheng's confused eyes, Mr. Song explained: "I thought she was annoyed, so I didn't leave her alone." Mr. Song seemed to be afraid that she would talk nonsense and offend Li Guocheng.

Li Guocheng didn't say anything, and handed Mr. Song the prescription for conditioning the body, "Take care of the body for a week first, and then change the medication depending on the situation."

When Song Lao was making prescriptions, Li Guocheng started acupuncture treatment.

Ten minutes later, Xiaodouzi fell into a deep sleep, with a smile on his lips.

"These two days have been the best days for Xiaodouzi. I haven't had a good sleep since I came back. I always wake up from the pain," Mr. Song said in a low voice after he came back.

"I'll come again tomorrow to see how effective the medicine is, and then I'll come back at the weekend."

Mr. Song picked up yesterday's long box from the coffee table, and handed it to Li Guocheng, "Xiao Li, please accept it, and you don't want the consultation fee. If you don't accept it, I won't feel at ease."

Li Guocheng thought for a moment: "Okay, that's just right. Think about how to use it to replenish Xiaodouzi's health without hurting her."

Seeing Li Guocheng accept the ginseng, Mr. Song smiled happily, as if giving the stuff away would make him feel more at ease.

When leaving, I stopped by Mr. Yuan's place to have a look. Mr. Yuan was very busy, so Li Guocheng went home without disturbing him.

The next day, Li Guocheng locked himself in the laboratory and tried to design NMOS based on his university memories and current knowledge. The principle of NMOS is relatively simple, and with the design experience of powerful diodes and triodes, there are several thermal diffusion solutions in a short time.

After completing the wafer engraving of 5 solutions in a secret place, I came to the dust-proof workshop and started the vacuum thermal diffusion furnace. Half an hour later, I got the sample without packaging.A simple improvement was made to the test circuit of a test bench, but the test results were not ideal. The on-resistance was too large and it burned out quickly.

The day passed quickly, but fortunately, remembering Xiaodouzi's illness, he rushed to Song's hometown at night, and there were still only Song Lao and Xiaodouzi at home.

Xiaodouzi had already taken medicine and looked like she had just cried. When she saw Li Guocheng, she forced a smile, then curled her lips and started crying again.

"Xiaodouzi, don't cry. Brother will give you acupuncture and you will be fine in a moment."

During the acupuncture process, I used my mind to observe the internal organs, and there was a slight improvement. With my keen perception, I saw the state of eruption, which was a good sign.

This change should be related to acupuncture, and it will take time for the medicine to take effect.

"Mr. Song, Xiaodouzi has improved a bit, but he was suffering from a severe deficit before, and it took a long time to recuperate. As for the blood problem, it is not suitable to be treated now, without a good foundation, all treatments are just waiting for the fish."

"Xiao Li, I believe you."

"I won't be here these days. Xiaodouzi takes his medicine on time and takes care of his body first. I'll come back on the weekend. If you have any questions along the way, you can call me."

After that, he left his office phone number with Mr. Song and said goodbye.

A few minutes after Li Guocheng left, the young woman named Tian returned home.

"Dad, can't Xiao Li come here every day? It has to be on weekends." The young woman was obviously very resentful.

Mr. Song snorted and had no words.

Next, Li Guocheng stayed in the dust-free workshop day by day, trying different combinations and doping ratios.

Three days later, he finally got the best ratio he wanted.Then he reorganized the experimental process and recorded the data, and finally confirmed that this was the NMOS tube he wanted.

Half a day later, the PMOS tube was also produced.

The importance of MOS tubes cannot be overemphasized. The most critical thing in subsequent large-scale integrated circuits is MOS tube technology.Its biggest feature is that its static power consumption is zero, which solves the problem of high chip heat generation.

Until now, the design and manufacturing of medium-scale or large-scale integrated circuits has become possible.

Just as Li Guocheng was preparing to continue the research on ADC, he was told that the ministry would inspect it tomorrow.Reluctantly, I took matters into my own hands and simply cleaned up the dust-free laboratory before returning to the laboratory.

In the large conference room of the laboratory, in addition to all the members of the laboratory, there were also Li Huaide, Deputy Director Nie, and Deputy Director Gao. It seemed that several parties in the laboratory had reached a distribution of interests. This was the first time that Li Huaide brought them there. laboratory.

After some talk and requests, the leader left, and the next step was to implement it as a matter for the laboratory.Wu Liankui looked confused.

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(End of this chapter)