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VOLUME 2 Chapter 7 The Motherboard Cannot Be Repaired

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    "Xiaozi, what are you talking nonsense about?" Chen Qiang was very uncomfortable, and felt that he was really useless as a father: "I know you want to help the family take some responsibilities, and you don't want me to be in the factory"

    Chen Qiang poured the wine on the table into his stomach, "But this matter is beyond your ability. CNC machine tools are high-tech products or imported from Germany. Your computer teacher may not know it, but you will?"

    Chen Qiang said: "You are about to take the college entrance examination, so you don't have to worry about it, I know how to deal with it."

    That's what Chen Qiang said. In fact, he really has no good solution. Even if he finally takes the responsibility for the burning of the machine tool away, the job in the factory will definitely be lost.

    Chen Qiang, who was depressed in his heart, continued to drink in suspense. The powerlessness and incompetence of the middle-aged man made the family feel oppressed and breathless.

    Chen Xiao is not a child, so he can understand Chen Qiang's final dignity as a father in front of his children.

    He stopped talking and buried himself in eating.

    After dinner, Chen Xiao returned to the room.

    He took out the motherboard of the CNC machine tool and studied it in detail.

    This batch of machines was produced by Germany's DMG in 1995. The size of the motherboard is much larger than that of later generations, and the motherboard of the machine tool is still matched with a dedicated chip.

    This type of special-purpose chip motherboard will be eliminated in the next few years. After Xia Guo's CNC machine tools use general-purpose chips, they have embarked on a path from imitation to innovation with the development of national integrated circuits.

    Chen Xiao found that most of the motherboards were burned, and it was very difficult to repair the original motherboards.

    I looked at several motherboards in a row, and they all had the same problem. The huge current passing through the motherboard instantly caused many capacitors to be damaged, and some components generated high temperature instantly, which directly melted some parts of the motherboard.

    It stands to reason that the machine tool uses a three-phase 380V voltage, and the neutral wire of the control transformer needs to be grounded, but Chen Xiao went to the factory today to seethe wiring only has a random word.

    In other words, there is a question mark whether the machine tool has a ground wire or not.

    The motherboard cannot be repaired, but it can be re-produced.

    With the current Xiaguo technology, it is absolutely impossible to reproduce a motherboard according to DMG's signal.

    However, Chen Xiao can completely change the circuit, make the main board a little bigger, and make the precisely designed circuits a little simpler but more in number, as long as the machine tool can run automatically.

    Chen Xiao made the circuit as simple as possible, and it doesn't matter if there are more circuits, so the factories in Jiangcheng or Jiangzhou should be able to produce.

    In Xiaguo in 1999, due to the rise of the VCD, DVD and CNC machine tool industries, there were already many integrated circuit foundry factories, but there was still a significant gap in level compared with overseas ones.

    It is very difficult for these factories to design an integrated circuit, but some simple integrated circuits can still be made by letting them follow suit.

    Chen Xiao took out his workbook and began to design the main board of the machine tool.

    From simple to complex, Chen Xiao designed a total of three drawings. If the drawings are the easiest to produce but have the most circuits for production, then these more than ten CNC machine tools need to be patched with a "big belly" under the machine.  The location of the motherboard is definitely not fit.

    Although Chen Xiao's integrated circuit diagram is bulky, its principle is simple and easy to maintain.

    After finishing all this work, it was already one o'clock in the night.

    The lights in Chen Qiang and Lin Hui's rooms are still on, and they will definitely not be able to sleep tonight.

    Chen Xiao can't explain anything to the two of them now, so they can only worry about it for a few days, and when they find a factory here to process the motherboard, the matter will be solved.

    The next day was the last day of the first examination.

    ? In the morning, it is science and technology, and in the afternoon, it is English.

    Li Zong didn't have much to say about Chen Xiao's strengths.

    English was difficult for Chen Xiao in the past, but it is much easier for Chen Xiao now.

    Jiang Wei and Deng Chao continued to ask Chen Xiao to send the answer, of course Chen Xiao was willing.

    On the contrary, it was Su Qiao who pointedly despised Chen Xiao when she was talking to Shen Wei before the English test.

    Su Qiao bought two bottles of Rising Sun Ice Tea, handed a bottle to Shen Wei, and said, "Shen Wei, what university are you going to take?"

    The 1999 college entrance examination system is to take the exam first, then estimate the score yourself, then fill in the volunteers, and then give the scores after filling out the college entrance exam volunteers.

    If you want to get into a university of your choice, not only do you need to do well in the exam, but you also need to fill in the application properly, and finally, there is a lot of luck involved.

    Therefore, Shen Wei now??I don¡¯t know what kind of university I will be admitted to.

    Shen Wei took the Rising Sun Iced Black Tea, thanked her and said, "I haven't figured it out yet, maybe I'm going to Yanjing."

    In fact, Shen Wei did not say that her dream university is Yenching University.

    Girls in this era, the city they most yearn for is not Yangcheng, Shenzhen, let alone Suzhou and Hangzhou, but the capital of the motherland¡ªYanjing.

    Hearing what Shen Wei said, Su Qiao's eyes lit up, and said: "Yanjing University and Shuimu University will have a place in Jiangyang Province every year. The requirements are the school's recommendation and the school's comprehensive inspection. If you have competition experience, it is even more important.  Well, this time Yenching University and Shuimu University seem to be coming to our school to recruit, your grades are so good, maybe the school will recommend you!"

    In fact, Su Qiao wanted to say that if there is no accident, the recruiting point recommended by the school this time should be herself.

    Last month, the 1999 Olympic Mathematics Winter Camp was held at Yenching University. Su Qiao¡¯s family gave him a lot of contacts and spent a lot of money to participate. Su Qiao also took a week off from school.  Using some means to win the second prize, these are the advantages of Yenching University's recruitment.

    Su Qiao's father Su Desheng also said that there is no problem in going to Yenching University.

    But this matter is a secret operation, even if Su Qiao is excited, she can't say it!

    Why!  Not being able to pretend is too uncomfortable.

    Shen Wei hesitated for a while, obviously not aware of such a thing, she said: "It shouldn't be me"

    Having said that, in fact, Shen Wei still has some small expectations in her heart.

    Chen Xiao is a good person, once he heard Su Qiao say this, he probably knew the result. He handed Shen Wei a bottle of sharp-mouthed Nonghu Spring, which was a bit sweeter, "Xu Sun Sheng Iced Black Tea contains aspartame, ansai  Honey is essence, so drink less, and mineral water is healthy."

    Seeing that the conversation between herself and Shen Wei was interrupted, Su Qiao was very upset. How did she know that Shen Wei looked at the mineral water Chen Xiao handed over, hesitated for a moment, put down the Rising Sun Iced Fire Tea, and took Chen Xiao's Nongfu Spring  .

    Now Su Qiao is about to explode on the spot.

    Looking at the back of Chen Xiao leaving, Su Qiao couldn't help but sarcastically said: "Some people don't want to fail the English test in the afternoon!"

    Su Qiao¡¯s family is in good condition. In addition to being tutored by a special English teacher, he often participates in English summer camps. English is his best.
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