Tech house system

Chapter 46

Wei Shuxun is not a person who loves to read books, even if he tries to correct himself now, he can't hide his true nature.For example, "Mental Health Education for College Students" and "Ideological and Moral Cultivation and Legal Basis" are two courses he must skip. He only requires himself not to fail courses such as advanced mathematics and English, and he has never considered what to take. high score.

He has been cramming for a long time just to keep up with these courses, and he finally got rid of it. Unless he is cramming for exams, he absolutely does not want to entangle with textbooks outside of class time.

But for some reason, he was fascinated by books other than textbooks, especially those related to electronics.The "High-Frequency Electronic Circuits" and "Micro-Nano Electronics" he bought a while ago are obviously textbooks, but he likes them very much. He not only studies, but also makes reading notes-this is simply incredible for him. .

Wei Shuxun is a calm person. When he found out that he likes electronics, he went to learn it and didn't get too entangled.Now I found a very interesting solar energy storage device, and it happened that Liu Yongdong and the others had nothing to do, so he naturally wanted to find an opportunity to learn how to make it.

The name of the solar energy storage device sounds powerful, but for those who understand electronics, it is actually a very easy product to make.It's just that there are too many portable storage devices on the market, and no one is willing to spend energy on self-made.

Liu Yongdong didn't hide his secrets, he handed the design drawing directly to Wei Shuxun, and said to him: "This is for you, don't ask me if you don't understand. Also, don't call me a girl, I don't participate in social networking."

"No, no, we want to participate." Feng Wei objected: "That's a beauty from the School of Foreign Languages, it would be a pity if we didn't know each other by chance!"

Wei Shuxun hadn't seen Zhang Ling for a long time, and the two had called several times after their military training, but they hadn't had much contact since then.There is also Han Zhixin, who basically stays in the library, and they haven't seen each other for a long time even though they are from the same school.Just to call them all out for a get-together.

After returning to the dormitory at night, Wei Shuxun called Zhang Ling, Zhang Ling heard Wei Shuxun's proposal, turned around and asked the roommates in the same dormitory, there was a girl's noise on the phone, Wei Shuxun faintly I heard someone shout: "A student from University A? Go, of course!"

Regardless of Liu Yongdong's willingness or not, Wei Shuxun promised to help with the friendship after taking the design drawings. It happened that Zhang Ling was also willing, so Wei Shuxun and Zhang Ling agreed on a time for the friendship next week, and then called Han Zhixin.

Han Zhixin still looked like a bookworm. After hearing Wei Shuxun's notice, he hummed, and then asked: "Have you attended class well recently? How many classes have you skipped? Come to the library when you have nothing to do. Supplementary lessons..."

Wei Shuxun hung up the phone silently, took out the design drawing of the solar energy storage device, wrote down the required accessories in his notebook, and planned to buy them all tomorrow.Speaking of the cost of accessories alone, it is estimated that it is much more expensive than buying mobile storage devices on the market, but Wei Shuxun would rather make it himself.

Tonight's training with Zhou Quan was two hours earlier than usual because Wei Shuxun planned to invite Zhou Quan to dinner to show his gratitude.The place for dinner is a restaurant next to the school. Although the restaurant is not big, it is clean and tidy, and several special dishes are also very good.

When Zhou Quan entered, he was followed by another person.The man was also in his twenties, about the same age as Zhou Quan, and he was wearing a set of dark blue work clothes with many pockets, which looked a bit like an electrician's work clothes.But he looks gentle and handsome, and he also wears a pair of rimless glasses. His temperament and clothes don't match at all.

Wei Shuxun felt that this person was very familiar, but he couldn't remember it for a while.There was no expression on his face, but the man seemed to have seen his confusion, and said with a smile: "Don't you recognize me, kid. My name is Xu Yuanjun, we met last month."

Wei Shuxun suddenly realized that Xu Yuanjun was the group of friends who gathered together when Zhou Quan invited him to dinner when he just came back from military training.Xu Yuanjun also left him an email address, telling him to find himself in trouble, although Wei Shuxun wrote it down, he didn't take it to heart.

"Long time no see, Mr. Xu."

"You don't need to call Mr. Xu, Brother Xu, Brother Yuan will do."

Wei Shuxun called Brother Xu from his kindness, and after the three of them sat down, Wei Shuxun ordered a few special dishes of the restaurant.Wei Shuxun was not familiar with Xu Yuanjun, so he just chatted politely during the meal, so as not to be cold.Xu Yuanjun seemed to be extremely talkative and knowledgeable, no matter what Wei Shuxun said, he could catch up with him.Even if Wei Shuxun complained a little about the "Mental Health Education for College Students" course, he could recite a few sentences.

Unknowingly, Wei Shuxun got so absorbed in chatting with Xu Yuanjun that he didn't even care about food, and even felt like being a confidant.It wasn't until Zhou Quan snorted heavily that Wei Shuxun woke up. He invited Zhou Quan to dinner today, how could he leave the host and guest aside.

"Uh...Zhou Quan, the stir-fried river prawns here are very tasty, try it." Wei Shuxun took a chopsticks of river prawns into Zhou Quan's bowl, and smiled awkwardly: "What else do you like to eat? Would you like some more dishes?"

"No need." Zhou Quan's complexion softened slightly, and he offered him a few dishes instead: "Don't talk while eating." At the same time, he glared at Xu Yuanjun warningly.Xu Yuanjun shrugged and made an apologetic gesture.

Wei Shuxun didn't understand, so he looked around, scratched his head, and buried his head in his meal obediently, his long eyelashes drooped, covering his thoughts.

Zhou Quan's cold snort brought him back to his senses, only to realize that he had chatted a lot with Xu Yuanjun unknowingly, obviously it was only the second time he met a stranger, and his personality was not speculative with everyone, so he actually developed a confidant feeling towards Xu Yuanjun feel.And recalling the content of the chat just now, he found that under the lure of Xu Yuanjun, he actually talked about a lot of things in the university, and he himself knew nothing about Xu Yuanjun except his name.

Fortunately, Xu Yuanjun was not interested in his little friend, and just asked about the life of University A, otherwise Wei Shuxun would have doubted what he would say?It didn't matter that he was a gangster in the past, but he absolutely couldn't reveal a word about Wei Cheng.People like Xu Yuanjun probably specialize in intelligence, so it's better to stay away from them in the future.

After eating, the three of them drove back to Zhou Quan's apartment, and Wei Shuxun noticed a large canvas bag on the back seat.Seeing that he was curious, Xu Yuanjun patted the canvas bag, then patted the work clothes on himself, and said with a smile, "Work."

Wei Shuxun nodded without asking further questions.Back in the training room of the apartment, Xu Yuanjun took out a few strange electronics from the canvas bag, and said while taking them: "I don't think Shuxun kid needs to learn these at all, he can't possibly encounter this level of danger."

"Yes." Zhou Quan nodded: "Just by the way."

"Hey, isn't it just that there were a few fights between the kids, you can just teach him some fighting skills, there's no need for him to learn so much, right?"

Although Xu Yuanjun complained so much, he still put out the electronic products one by one.Wei Shuxun squatted beside him and curiously took out a small square box: "Brother Xu, what is this?"

"Voiceprint lock." Xu Yuanjun casually pointed to a few electronic products next to him: "That's a fingerprint lock, the big one is an eye pattern lock, these are mechanical locks, combination locks."

"..." Wei Shuxun looked at Zhou Quan: "What are my lessons today?"

Zhou Quan nodded: "By the way."

Originally, the course Zhou Quan arranged was just ordinary unlocking, but he happened to know that Xu Yuanjun had taken back a batch of special combination locks, so he called Xu Yuanjun over to teach.

Xu Yuanjun is good at all kinds of combination locks. Seeing Wei Shuxun holding a voiceprint lock, he smiled and said, "Since you like this, let's start with the voiceprint lock. What do you know about voiceprint locks?"

Wei Shuxun thought for a while, and answered, "An electronic lock that unlocks through voice recognition."

"Yes." Xu Yuanjun nodded: "Through the analog-to-digital conversion chip, the sound is converted into a digital signal, and then the digital signal is fed back to the myoelectric amplifier..." Seeing Wei Shuxun's confused face, he explained: "It's muscle electricity. The signal analyzer can only open the door if it can reflect the characteristics of the human body. Otherwise, the thief can open the door with a tape recorder."

Wei Shuxun looked at the voiceprint lock in his hand in surprise. There are so many working procedures in such a small box?He thought it was the function of receiving sound and unlocking in one step.

"Learning machine, can you scan its interior for me?"

"can."

During Xu Yuanjun's explanation, Wei Shuxun also saw clearly the inner workings of the voiceprint lock through the scanning of the learning machine and the void image display, so the unlocking speed was extremely fast, which surprised Xu Yuanjun and Zhou Quan.

"Have you ever learned how to pick a lock?"

"No." Wei Shuxun shook his head.

"...If you were in our technical class, you would at least be in the top ten." Xu Yuanjun patted Wei Shuxun on the shoulder: "Little friend, do you want to change to the military academy? Zhou Quan and I can recommend it for you, right Zhou Quan?" ?”

Zhou Quan shook his head: "I hope he is safe."

When he first taught Wei Shuxun, he discovered that his attack style is completely military style, neat and ruthless.If it wasn't for him not being completely ignorant of combat terminology, and his actions were all based on instinct, Zhou Quan would have suspected that he was from the army.Such a natural military material, if it was someone else, Zhou Quan would definitely try his best to recruit him into the military academy.But Wei Shuxun can't, Zhou Quan hopes that Wei Shuxun can laugh and laugh like ordinary young people, and live a peaceful life.

"Thank you, I'm not interested." Wei Shuxun also refused. He personally likes the simple life of the army. Daily training and fighting are nothing to his good physique.But the goal of the learning machine is "great people". He felt that if he was a soldier, he would have to sacrifice this goal in eight or nine out of ten.

Or consider becoming a civil servant after graduation, and see if you can climb to the position of national leader before dying of old age!

Afterwards, Wei Shuxun learned about electronic locks and mechanical locks, and unexpectedly the electronic lock was very easy to open. After connecting to the computer, after Xu Yuanjun's guidance and understanding of the calculation method and related procedures, it was easy to open.On the contrary, the mechanical lock is more complicated and takes more time.

"Locks that have been used for more than 200 years are naturally valuable." Xu Yuanjun smiled: "Didn't you see that most safes and vaults are mechanical locks? History has verified its stability."

"What about the eye lock, how to solve it?"

After learning all kinds of locks at the scene, there is only the last eye pattern lock left, and Wei Shuxun is eager to try it.I have never seen eye pattern locks in real life, but they often appear in technology movies. Of course Wei Shuxun wants to try it.

"There is a special sight to unlock, but it's not here, so I can't teach you about it." Xu Yuanjun smiled: "But there is the easiest way to unlock it, just pick out the eyes..."

"Xu Yuanjun!" Zhou Quan's face darkened.

"By the way, you are just an ordinary student." Xu Yuanjun spread his hands apologetically: "Because you performed too well, I mistakenly thought I was in class."

After Xu Yuanjun's teaching ended, Zhou Quan began to teach Wei Shuxun the ordinary lockpicking method.Before the teaching, Zhou Quan severely emphasized: "These skills can only be used when you are trapped and dangerous. If you use them to commit crimes, I will personally solve you."

Xu Yuanjun also said similar things before teaching.Wei Shuxun nodded solemnly and raised his right hand: "I swear, I will never use these skills unless I am in danger."

Wei Shuxun is still obsessed with the eye pattern lock. While learning the lockpicking technique from Zhou Quan, he asked the learning machine to scan the eye pattern lock.After returning to the dormitory, Wei Shuxun immediately took out his notebook and drew the inside of the eye pattern lock as a circuit diagram.

The next day, Wei Shuxun called Liu Yongdong and the other three, and asked them to accompany him to buy accessories for solar energy storage devices, and at the same time asked them to help analyze the accessories for the eye pattern lock.

Although there is a complete circuit line, the learning machine only provides scanning, and the accessories inside. According to the learning machine, many accessories will be cut off or have different names in the future, so the learning machine does not know what the accessories in the circuit diagram of this era are. Wei Shu Xun had no choice but to ask Liu Yongdong and others to help "look at the picture and talk".

"This seems to be a T8 noise suppression filter." Sun Yi.

"I think it should be an EMI filter." Feng Wei.

"The appearance is similar, and the specifics need to be tested to determine." Liu Yongdong looked at Wei Shuxun: "Let's buy both together."

"This is already the fifth pair." Wei Shuxun smiled wryly: "I'm afraid I don't have enough money."

He now understands why the three of Liu Yongdong don't have enough money every day, because the determination of a part requires at least three experiments, and more than a dozen parts are rotated. The money to buy these parts alone can make people poor.

But he didn't give up the idea of ​​making an eye lock by himself.Obviously the eye pattern lock is not necessary, but after he drew the circuit diagram, he couldn't help but want to make it.Not for showing off, not for profit, just because of liking.I want to turn the circuit diagram of the tablet into a finished product by myself, even if it is available in the market, I want to make it myself, just because of the joy and satisfaction.

Wei Shuxun felt that he seemed to understand Liu Yongdong's mood of making solar energy storage appliances by himself.

Considering economic issues, Wei Shuxun didn't buy everything at once, but bought the accessories of solar energy storage appliances first. Unlike Liu Yongdong, he didn't want to give away, so he only chose a few ordinary and cheap accessories.I bought a few eye lock accessories, and you get what you pay for. It can only be said that the "gold content" of high technology is so high that it hurts.Wei Shuxun only bought the accessories for the thermal effect analysis part, and he planned to buy some of the rest a month and finish it slowly so as not to run out of money.

After buying accessories and returning to school, it was already past one noon.The school cafeteria was closed, and the four went directly to the small restaurant on the second floor to eat.The environment of the small restaurant is well decorated, and some evergreen plants are used to make small compartments. Not long after the four of them sat down, Liu Yongdong, who was reading the menu, suddenly became motionless.

"What's the matter..." Wei Shuxun asked, Feng Wei suddenly pushed his arm, and following Feng Wei's fingers, Wei Shuxun saw two female students coming up from downstairs.

She doesn't look very pretty, but she is dressed in fashion. The focus is on the girl on the right. Although Wei Shuxun doesn't recognize her face, he still remembers her curly brown hair.

"Liu Yongdong's goddess?" You don't need to ask, just look at Liu Yongdong's straight eyes.

The two girls didn't notice them at all, they walked and chatted, and happened to be sitting in their cubicle.Following their direction, Liu Yongdong slowly tilted his body from hair to head.In fact, he didn't need to tilt his body, the distance was so close, the girl's laughter could be heard clearly.

"...Hahaha, that man is so funny."

"What fun." The brown-haired girl complained, "Opening the gift in front of the whole dormitory, it turned out to be such an ugly box. It said it was solar energy, and the wiring inside was exposed. Since I entered the school, I’ve never received such a cheap gift, and it’s still in front of the whole dormitory!”

"So you quit the next day?"

"I was so angry that I didn't sleep well all night, so I quit early the next morning!" The girl was still annoyed: "That person asked me why I didn't like it, at least he had to give me a real mobile storage device, which I made myself What kind of!"

"Hahaha!" Her friend laughed again: "Maybe he has no money, so he made it himself."

"It should be." The brown-haired girl nodded: "I don't usually see him participating in class activities, never attending class reunions, and never joining clubs, student unions, and staying in an abandoned office all day, saying it's a laboratory. I don't know what to research. I haven’t heard of any results, anyway, I’m a worthless person.”

"Bang!!"

Feng Wei was full of anger and wanted to slap the table. Liu Yongdong pressed his shoulder and walked over by himself.The brown-haired girl didn't seem to expect that the person she was laughing at was right next to her, her expression changed and she didn't dare to look directly at Liu Yongdong.

Liu Yongdong has a stable temperament and doesn't yell at him. Looking at the girl he likes in front of him, he speaks calmly: "Wodsr solar panels, price 450 yuan, carbon graphite 120 yuan, heat-conducting end surface 200 yuan, farad capacitor 150 yuan, clarinet 25 yuan... plus throw away The total cost of the experimental product is 2500 yuan, which is enough to buy ten mobile storage devices."

The girl's face was pale, and she felt that she had lost face in front of her friends, and turned her head coldly.

Liu Yongdong had already left, Feng Wei and Sun Yi patted him on the shoulder to comfort him, and the three of them went downstairs together.Wei Shuxun finally stood up and looked down at the girl condescendingly. The girl scolded in displeasure, "What are you looking at?"

Wei Shuxun shook his head: "What is the future in your eyes?"

Out of friendliness, Wei Shuxun considered whether to advance his friendship with Zhang Ling. Zhang Ling has a gentle personality, and her friends should not be too bad.It's not that Liu Yongdong is going to fall in love again right away, singing and having fun together can also make people feel cheerful.It's okay to say that it's a broken relationship, but being ridiculed behind the back by the person involved, and I heard it, it's really too miserable.

Not only Wei Shuxun was thinking about how to get Liu Yongdong out of this heavy blow, Sun Yi and Feng Wei were also thinking of ways.Sun Yi was more straightforward. When everyone arrived at the laboratory the next morning, Liu Yongdong's workbench was full of various design drawings.

"These are all my design drawings, and many ideas are incomplete." Sun Yi said to Liu Yongdong: "You can help me study together."

Liu Yongdong: "...what are you doing?"

Sun Yi pushed his glasses: "I heard that the best way to forget a broken relationship is to keep finding things to do."

"..." Wei Shuxun and Feng Wei looked at each other, admiring Sun Yi's straightness.If there is an animation effect, you can definitely see that Liu Yongdong's heart has been poked several times - in fact, Liu Yongdong can't control his heart anymore.

Sun Yi continued to seriously advise: "Try first to see if being busy can relieve the pain, and then I will look online to find out how to get you out of the shadow of broken love as soon as possible..."

"Don't talk about Sun Yi." Feng Wei raised his hand: "I have the best way, which can keep us busy and get revenge back at the same time."

Liu Yongdong shook his head: "I don't want revenge..."

"That's not what it means." Feng Wei showed a piece of A-[-] paper: "Dangdang Dangdang, the "National Undergraduate Electronic Design Contest" held by the Science and Technology Museum, with a maximum prize of [-], is organized by Education Channel, and if you get the prize, you will even be on TV! How about it? Refute her saying that you are worthless, and show her a champion!"

The 1 yuan bonus was completely ignored by the three of them. Although they complained that they had no money, they actually made a lot of money selling technology. The last time the four-dimensional aircraft sold for [-] yuan, it was just a small amount.It's just that the three of them don't like publicity, and instead they are seen as worthless.Feng Wei is not a person who can bear it, so of course he has to slap him in the face and go back.

Sun Yi nodded: "Yes."

Liu Yongdong was silent for a while, then nodded: "Yes."

Feng Wei clenched his fists excitedly: "Okay, the four of us will work together, and we must win the championship of the "National Undergraduate Electronic Design Contest" to impress the gossiping guys behind us!"

Wei Shuxun smiled: "Come on...huh...four people?!"