In many people's understanding, the university should be an ivory tower for carefree and dedicated learning, but the problem university is not a social island, and all the problems of the outside society will slowly erode and infiltrate.

"Oops! Failed again, why can't the digital information on the disc be restored to the video signal! ”

In the semiconductor laboratory of Jiang University of Science and Technology, there was a sudden wail, and the magpies in pairs on the trees next to them looked over curiously, and saw a middle-aged man scratching his ears and cheeks in the office, obviously failing again.

This is Li Xing with the technical backbone of Jiangxia Electronics Factory in the VCD experiment, but it still failed to succeed.

In fact, this is normal, after all, scientific experiments are tried little by little, even the most common light bulb is exchanged for thousands of failed experiments, not to mention the epoch-making product of VCD.

But the problem is that the factory is still waiting for itself to come up with new products to open up the situation, carrying the hope of the future of the factory, thinking about Director Zheng's trust in himself, how can Li Xing not be anxious.

On the contrary, the senior sister Zhou Minde on the side was full of calmness: "Not only is the problem that the digital signal cannot be decoded and restored, but also the interference noise of the circuit logic and pulse signal. ”

Saying that, Zhou Minde handed the circuit board in his hand to the female student Xiao He, a little girl who wore glasses and looked very delicate, picked up a big hammer and smashed the corners, and then pulled and pulled, accompanied by a tooth-sore pricking sound, and pulled off the soldered copper wire.

Li Xing looked distressed: "Xiao He, be careful, don't break the chip on it, we will use it in the next experiment!" ”

Zhou Minde looked up at him strangely: "When did you become so timid?" This chip is not as weak as you think, and this is the chip of the LD machine, which could not be used on our VCD machine, and we need to remake it. ”

After a pause, Zhou Minde continued: "And according to your requirements for the machine, not only the chip problem, but also the photoelectric signal conversion, logic circuit and limiter, etc., we have to remake it." ”

While speaking, Xiao He over there had already removed the LD chip from the bottom plate and put it under the faucet to rinse the dust.

I have to say it's a bit violent.

But this is also necessary, because the chip is simply an integrated circuit board composed of many wires, and the chip is far less fine than the mobile phones of later generations, especially the LD machine chip that is still one era behind the CD player, not to mention the micron-level nano-level, that is, the millimeter level is not counted, and it can be seen and modified directly with the naked eye.

Zhou Minde took the chip and wiped it dry, then put on special glasses, carefully filed off the above circuits little by little with a file in his hand, continued to flush and clean and dry again, and then took a file to file the circuit and then flush and wipe dry, so that after the cycle was done several times, the flying wire was reconnected.

At this time, I could see that the chip in Zhou Minde's hand was not the originally packaged chip at all, and there were already many flying wires connected to it.

After finishing it, he threw it to Li Xing: "Test how the circuit is now." ”

Li Xing took the chip and put it lightly on the bottom plate, soldering a few wires, and looked like he was doing needlework.

In this laboratory, Zhou Minde and Xiao He are so relieved and bold, but Li Xing is so careful and careful, which is really happy.

"Teacher Zhou, I'll get the LD machine!"

Suddenly, there was a shout at the door, and then a young man in a leather jacket and bell-bottoms knocked on the door of the laboratory.

Zhou Minde stared at the circuit signal intently, and didn't raise his head and said, "Oh, then Xiao He, you go and get it to him." ”

But Xiao He didn't move for a long time, and the young man in leather clothes and bell bottoms was anxious: "Xiao He, you go and get it, if it's inconvenient for me to take it myself, Teacher Zhou, is Xiao He unhappy today?" ”

Zhou Minde frowned and stood up impatiently: "Why does Xiao He make it so hard for you to take something?" Isn't it just an LD machine, isn't it just ......"

Zhou Minde was suddenly stunned as she spoke, because she remembered a terrible fact: the countless chips that she flew to the wire just now seemed to be the LD machine.

Kindness......

"That Xiao Wang, the LD machine Teacher Zhou is still useful here, or you can get it next time, or there are CD players and video recorders here, you can use them first, they are all just bought back, and they are new."

Zhou Minde said and asked Xiao He to bring over the CD player and video recorder and let the young man in leather clothes and bell bottoms choose.

The young man in leather clothes and bell bottoms frowned: "Teacher Zhou, you forgot again, my name is Pete, or you can call me Pete King." ”

Zhou Minde nodded: "Okay, Pete Wang, the teacher is really useful here, you can take one and use it first, go ahead." ”

When it came to this, King Pete could only do this, but when he looked down, his eyes widened: "My God, this is SN's latest CD player, Mr. Zhou, have you applied for funding?" You can afford to buy this, so why don't you return the LD machine to us? ”

Zhou Minde explained again and again that the CD player is different from the LD machine, and the LD machine is really useful now, so use the CD player first.

"Senior sister, this pulse signal has never met the requirements, is this LD machine chip not good, we have to disassemble and rebuild." Li Xing said suddenly.

This is a bad thing, King Pete had already accepted Zhou Minde's explanation, but now when he heard Li Xing suddenly come to such a sentence, he asked curiously: "What LD machine chip does Mr. Zhou have?" ”

"The LD machine chip, in fact, is the circuit board we newly researched, which is the ......"

Zhou Minde was about to explain, but King Pete thought of something, and strode towards the workbench not far away, and then saw the LD machine that had been disassembled and broken, and the chips that had been thrown into a mess.

"Teacher Zhou? You actually dismantled the LD machine of our electromechanical institute? ”

King Pete exclaimed: "Mr. Zhou, I know you want to study chips, but you can't do it, it's the LD machine of our mechanical and electrical institute, you borrowed it, why did you dismantle our things for experiments?" ”

"Pete Wang, things are not what you think." Zhou Minde hurriedly explained, "Originally, we wanted to buy a new LD machine for experiments, but the time was too late, so we borrowed your first, and when we bought a new LD machine, we will return it to you." ”

"That's it, classmate, you see we have a CD player and a video recorder, and we won't have an LD player if we have money." Li Xing also said.

Zhou Minde turned his head and glared at Li Xing fiercely, and Li Xing also knew that he had caused trouble with his throat just now, so he immediately covered his mouth.

"The teacher also knows that this thing is not very good, but the teacher will pay you for one, or this CD player can also be taken, didn't you say that it is the latest model?" Zhou Minde said.