Tech house system

After getting used to college life, some students gradually started to skip classes.Especially for the two courses of "Mental Health Education for College Students" and "Ideological and Moral Cultivation and Legal Basis", for this boy who is beyond his age, listening to such dull lectures is simply torture.So as long as there are these two courses, there will always be fewer people in the class.

Wei Shuxun is no exception. Yesterday Liu Yongdong asked him to pick up the transistor in the afternoon, but this morning there are two courses that happen to be Mental Health Education for College Students and "Ideological and Moral Cultivation and Legal Basis". Going to the Internet cafe to play games, Wei Shuxun refused their invitation and went to find Liu Yongdong.

Knocked on the door twice, but no one answered, the door was ajar, Wei Shuxun pushed the door open and asked, "Is anyone there?" No one answered, the room was filled with all kinds of mechanical debris piled up on the console , Wei Shuxun was about to leave, when the door opened suddenly, Sun Yi came out, saw Wei Shuxun standing at the door, was stunned, and asked strangely: "Who are you, what's the matter?"

"...My name is Wei Shuxun." Wei Shuxun said, "You brought me here yesterday."

"Ah, tantalum capacitor transistor?" Sun Yi thought for a while, then pointed to Wei Shuxun with a sudden realization.

"I'm not called a tantalum capacitor transistor." Wei Shuxun was expressionless.

"I'm sorry, I'm sorry." Sun Yi scratched his head: "I forgot about you in a hurry yesterday, isn't your tantalum capacitor transistor ready yet?"

"No, Liu Yongdong asked me to come over in the afternoon. I'm fine in the morning, so I'll take a look."

"Liu Yongdong has class in the morning, so he may come later. If you need it urgently, I can help you." Sun Yi adjusted his glasses, walked to Liu Yongdong's seat, and pulled the drawer a few times. It was locked and could not be opened.

"It's okay, I'm not in a hurry." Wei Shuxun said, pointing inside: "Sorry, I heard something ringing..."

"Ah, my signal...!!"

Sun Yi rushed into the room, Wei Shuxun followed him, saw him sitting on the computer and clicking and clicking, and the computer displayed a line of data, Sun Yi sighed: "Fortunately, the value did not explode high."

Wei Shuxun knocked on the door: "Did I disturb your work? Sorry, I'm leaving first."

"Okay, please bring me a breakout board before you go, it's on the white workbench."

Wei Shuxun nodded. He still knew the breakout boards. He walked to the workbench and looked at them. There were several breakout boards of different sizes, so he just took one of each and gave it to Sun Yi. "I don't know what kind you want?"

Sun Yi turned his head and just took a look, took out one without comparing, turned back to the computer, typed in a series of commands, pulled out the chip connected to the computer, picked up the T plug on the table, and said to Wei Shuxun : "By the way, help me hold the banana head again, the 3.5mm one is fine."

What is a banana head?

Wei Shuxun heard this name for the first time and wanted to ask, but Sun Yi had already turned on the soldering iron and concentrated on soldering the breakout board.Wei Shuxun knew that he must not disturb at this time, a little mistake would lead to the failure of the work, so he had to find it by himself.

"Learning machine, what is a banana head?"

An oval brass-colored gadget popped up from the void image of the learning machine: "Banana head."

This thing is really too small, Wei Shuxun finally found it among a pile of spare parts, and took it to Sun Yi.At this time, Sun Yi was fully engaged in the work, without raising his head, Wei Shuxun lowered his banana head, and looked curiously at the semi-finished product on the table.

That thing looks like a small plane?Looking at the messy desktop again, I saw four propellers.

"Are you building an airplane?"

When Wei Shuxun was looking at it, Sun Yi had already soldered the line, took the banana head and connected it to the other end, and only then did he feel free to answer. "It's a quadcopter, and we're trying to put it in an autopilot mode."

"Sounds very interesting, can I have a look?" Wei Shuxun asked with interest.

"Okay, it's not finished anyway."

The quadcopter currently only has a rough skeleton. The fuselage looks a bit like a helicopter, but there is a cross-shaped bracket on the top, which can be installed with four propellers. Half of the motors are already installed inside. Wei Shuxun doesn't know all these things.

"Learning machine, can you analyze what these are?"

After the learning machine is scanned, a void screen pops up: "High-strength aluminum alloy frame; flight control board, brand: mwc; nickel-metal hydride polymer battery, remote control module..."

Every time the learning machine reports something, a component is displayed on the screen.Originally these components were assembled together, Wei Shuxun couldn't understand them at all, but they were disassembled and explained by the learning machine, and he understood them instantly.

"Thanks, I didn't expect that the learning machine is very useful for you!"

"Small things." The learning machine has a flat and indifferent attitude, as long as it doesn't conflict with the task, the learning machine doesn't mind helping a little when it's okay.

Because the quadcopter was very interesting, Wei Shuxun moved a stool and sat next to Sun Yi, watching him install the components on the aircraft one by one.

When the quadcopter was about to be completed, there was noise from outside. Wei Shuxun looked up and saw Liu Yongdong who had put down his backpack.He didn't forget his purpose of coming today, so he stepped forward to say hello: "Hello, Liu Yongdong."

"Wei Shuxun, you came so early?" Liu Yongdong showed surprise: "I haven't finished your transistor yet."

"It's okay, I'm just here to take a look." Wei Shuxun waved his hand: "My things are not in a hurry, and it doesn't matter if you are busy a few days later."

"It's okay, this thing is not difficult to make." Liu Yongdong unscrewed the drawer, took out the broken tantalum capacitor transistor, and went to the various components piled up on the side to find a few materials.

Wei Shuxun saw that he was about to start working, so he sat quietly by the side.He found that electronics are more interesting than he imagined. They are obviously inconspicuous accessories, but after being processed and combined, they become another incredible product.Although I also made a permanent magnet barrier last time, I didn't have much recognition for the future products I had never seen before. I didn't really start to like it until I saw the prototype of the four-dimensional aircraft.

Liu Yongdong took out two single-crystal germanium and antimony pellets and started sintering. Wei Shuxun watched quietly, and at the same time summoned the learning machine to explain in his consciousness.

"Is this a mission reward requirement?" the learning machine asked.Simply scanning objects is not a problem, but making explanations is beyond the scope of the learning machine.

"Well, it's the task reward, explaining Liu Yongdong's working principle." The reward for helping Lu Xin last time has not been withdrawn, and it is useless to keep it, so Wei Shuxun simply used it to learn.

"Through sintering, the antimony is diffused into the single crystal germanium to form a dielectric layer and a polysilicon layer..." The learning machine has various high-tech materials including the future, but it is only transistor production, which is too simple for the learning machine's database.However, the learning machine still uses the electronic sound of the flat panel to explain as much as possible: "The polysilicon layer and the dielectric layer are currently being etched to form the gate and gate dielectric layers... Masks are made on the gate and sidewalls to form source and drain regions. ..."

The learning machine explained the steps and principles of Liu Yongdong's work one by one. Wei Shuxun listened carefully, keeping his eyes on Liu Yongdong's hands.

"He improved the transistor by implanting ions in the polysilicon layer, reducing the gate resistance and rc time constant of the transistor."

The transistor has been basically completed, only the final processing is left, and the final summary of the learning machine tablet is completed.Wei Shuxun smiled and said in his mind, "Thank you, learning machine."

Obviously, he has never touched electronics before. Under the neat explanation of the learning machine, he really understands it completely, not only the operation steps, but even the production principle. Now it is no problem for him to do it himself. Naturally, Wei Shuxun is grateful leaning machine.

"It's done." Liu Yongdong handed the completed tantalum capacitor transistor to Wei Shuxun, and smiled: "Is it boring to wait?"

"No, it's very interesting." Wei Shuxun shook his head: "Thank you, how much should I give you?"

"No, I didn't spend any materials." Liu Yongdong waved his hand indifferently: "If you thank me, next time I have military electronics, I will send you some samples. We have everything here, but it's okay to get military electronics."

Wei Shuxun nodded solemnly: "I remember."

It took more than half a day to reinstall the permanent magnetic blocker, and re-checked all the accessories. After confirming that there was no problem at all, Wei Shuxun put the music box in the suitcase under the bed so as not to damage it next time.

Although electronic products are no longer needed, Wei Shuxun still remembers Sun Yi's half-made quadcopter, so he would go to Sun Yi's place in his spare time.He didn't talk much, and he was very diligent to help run errands to get tools and accessories, and then sat quietly by the side without making a sound.

So even though they came here without permission, the three people here did not feel disgusted with him at all, and even talked to him about various electronic principles and techniques in their spare time.Although these high-tech Wei Shuxun couldn't understand, but out of a learning mentality, he carefully wrote them down.