Half an hour later, Mu Donglai came downstairs and saw Qi Aimin riding a 28 bicycle over.

"Lao Qi, ...... here"

Mu Donglai waved his hand.

Qi Aimin looks like he is in his forties, his head adheres to the tradition of programmers, has become Mediterranean, and he wears a pair of black-rimmed glasses, which looks a bit like an old pedant.

"Donglai, what about the kid you're talking about?"

"I'm still busy in the house."

"Take me there!"

Mu Donglai nodded, took Qi Aimin upstairs, and soon came to the room where Pang Xuelin was.

Pang Xuelin was still ticking, while Mu Qingqing was holding his chin and staring at Pang Xuelin without blinking with a pair of beautiful eyes.

Mu Donglai was a little embarrassed, and hurriedly coughed dryly.

Mu Qingqing came back to her senses and found that her father and another strange man came over at some point.

Mu Donglai said: "Qingqing, this is your Uncle Qi." ”

"Hello Uncle Qi!"

Mu Qingqing hurriedly stood up and said hello to Qi Aimin.

"Qingqing, hello, the last time I saw you, I was still a little girl with a runny nose, but I didn't expect to grow into a beautiful big girl in the blink of an eye."

Mu Qingqing's pretty face couldn't help but flush a hint of crimson, and said with a smile: "Uncle Qi, how can you say this about others." ”

At this time, Pang Xuelin raised his head, looked at Qi Aimin and smiled: "Professor Qi, hello." ”

Qi Aimin couldn't help but be a little surprised, and said curiously: "You know me?" ”

Pang Xuelin said with a smile: "I have seen it in the magazine, a professor of the Department of Computer Engineering of Sun Yat-sen University, and an editorial board member of the Journal of Electronics and Information Technology. ”

Qi Aimin couldn't help but be taken aback, nodded, and squatted down to look at the circuit designed by Pang Xuelin.

After a long while, he pointed to the equipment on the floor and asked with a smile, "Little brother, where did you learn these things?" ”

Pang Xuelin smiled faintly and said, "Self-taught." ”

"Self-taught?"

Qi Aimin was slightly stunned, feeling a little incredible.

In this era, in addition to computer professionals, there are not many people who can really get in touch with computers, like Pang Xuelin, who can design circuits by himself through single-chip microcomputers, even if few graduates of electronic information engineering at CUHK can do it, this little guy can achieve this level by self-study?

Not to mention, injecting machine code into the FPGA chip via the telephone.

Although he couldn't completely judge the structure of the machine language, there was no doubt that the little guy in front of him was not pretending, but really injecting machine code into the FPGA chip.

That's a bit sensational.

A computer instruction is a series of binary numbers that are fed into a computer chip and converted into a series of high and low levels so that the computer's electronics are driven to perform calculations.

Although the algorithm instructions that Pang Xuelin injected into the FPGA chip are not large, when translated into machine language, it is at least tens of thousands of sets of binary code, and it is a miracle that these instructions are entered without error through the telephone.

"Little brother, how did you do that?"

Pang Xuelin blinked and said, "Is this difficult?" ”

Qi Aimin almost spurted out a mouthful of old blood.

Is it hard?

This can't be done at all, is it?!

Pang Xuelin smiled and said, "Professor Qi, I forgot to introduce myself, my name is Pang Xuelin, my master is Professor Chen Wenyuan, the head of the Department of Mathematics of Lancheng University, and the second master is Professor Xu Baiqing, the president of Lancheng University......"

Qi Aimin and Mu Donglai were taken aback.

Mu Donglai said curiously: "Xiaopang, why haven't I heard you talk about it before, didn't you say that you only dropped out of school in the third grade of primary school?" The latter stuff is self-taught. ”

Pang Xuelin said with a smile: "It is indeed self-taught, at the beginning of this year, my cousin and I set up a ramen stall at the gate of Lanzhou University, and then unexpectedly met Professor Chen Wenyuan, he thought I was very talented, so he discussed with President Xu Baiqing to recruit me to study at Lanzhou University, and I will only be able to enter in the second half of this year!" ”

Qi Aimin and Mu Donglai glanced at each other, and always felt that this little guy was talking nonsense seriously.

Qi Aimin frowned and said, "Xiao Pang, where did you learn these things?" ”

Qi Aimin pointed to the circuit boards and components on the ground.

Pang Xuelin said with a smile: "Landa Library, when I set up a noodle stall in Landa, I would go to the library every day to read books, and after a long time, I naturally learned it." ”

As if seeing the suspicion on Qi Aimin and Mu Donglai's faces, Pang Xuelin paused and continued: "For example, Professor Qi's article "The Implementation of the Maximum Matching Weight Algorithm" published in the fourth issue of the Journal of Electronics and Information Technology in 1988 put forward a series of new concepts such as effective correlation matrix, upgraded adjacency matrix, and the fate of points, which made a lot of improvements to the maximum matching weight algorithm, and compiled the algorithm into a corresponding program through the FORTRAN language, and debugged it on the IBM-PC......

Qi Aimin couldn't help but be taken aback, he didn't expect that Pang Xuelin even knew about a paper he published five years ago.

After thinking about it, Qi Aimin asked, "Xiaopang, can you tell me about your understanding of the maximum matching power algorithm?" ”

Pang Xuelin said with a smile: "Your maximum matching weight algorithm was first improved based on an algorithm proposed by Edmonds for polynomials with computational complexity. Edmonds's algorithm has a random number of operations, which is related to the order in which the edges associated with the outer points are checked, and each edge is checked by an equation to determine whether it can become a branch in the staggered tree. In addition, in this algorithm, although the odd circle has been shrunk into a pseudo-point in the graph Gi, the marks and potential of each point in the odd circle are still constantly adjusted in the whole operation process, and although the odd circle and contracted odd circle continue to appear in the whole operation process, the number of points and circles in the graph does not decrease. Therefore, you have improved the Edmonds' maximum matching weight algorithm through the effective association matrix, the upgraded adjacency weight matrix and the advanced adjacency edge matrix, the fate of points, the odd circle matrix and the ejector rod, the expansion of pseudo-inner points, the three-array method of interleaved trees, etc., and so on......"

Pang Xuelin was full of joy and told the content of Qi Aimin's paper.

Qi Aimin was surprised and delighted in his heart, and said with a smile: "Xiaopang, I really didn't expect you to conduct such an in-depth study of my thesis. ”

"Research?"

Pang Xuelin raised his head, and said with a surprised expression on his face: "I haven't studied much, I'll just read it." ”

Qi Aimin couldn't help but be stunned and said, "How do you know so much about this algorithm without research?" ”

Pang Xuelin said with an innocent face: "Isn't this normal? Once you read it, you'll remember it......"

Qi Aimin was stunned for a moment, and glanced at Mu Donglai.

Mu Donglai's face showed a shocked expression, and he asked, "Xiao Pang, you mean that if you read any article once, you can remember it all and understand it completely?" ”

Pang Xuelin nodded with a smile and said, "Yes, it is because of this that Professor Chen Wenyuan and Professor Xu Baiqing rushed to accept me as a disciple, but I'm not in a hurry, let's wait until I go to university." ”

Qi Aimin and Mu Donglai couldn't help but look at each other.

Qi Aimin cried and laughed: "Donglai, I only understand now, why do you say that this kid is evil!" ”

Mu Donglai shook his head and smiled bitterly.

The reason why he thought Pang Xuelin was evil before was that he felt that this little guy was young, but his mentality was extremely mature, he was neither humble nor arrogant in speaking and doing things, and he had his own temperament.

And he is very good at dealing with danger.

But I never thought that in the academic field, the other party would be able to bring such a big surprise to me.

Mu Qingqing on the side also had her eyes shining, and the longer she got along with Pang Xuelin, the more she felt Pang Xuelin's mystery.

This big boy is simply a big treasure and can surprise himself at every moment.

Pang Xuelin didn't care about Qi Aimin and Mu Donglai's thoughts, and still pressed the binary code unhurriedly.

Mu Donglai and Qi Aimin were not in a hurry, and sat on the side and watched with great interest as Pang Xuelin wrote the code for the input machine.

In their opinion, this is simply a genius show.

Time passed minute by minute, and about twenty minutes passed before Pang Xuelin put down the phone and said, "It's okay!" ”

Mu Donglai said curiously: "Xiao Pang, you mean, you can use this to play VCD?" ”

Pang Xuelin nodded with a smile, just wanted to say yes, but soon, he patted his head and said, "I'm afraid not." ”

"What's wrong?"

Pang Xuelin smiled bitterly: "I patronize to make VCD players, but what about VCD discs?" Ordinary CDs can only store music, and we have to find a way to burn a movie from an LD laser disc to a VCD disc. ”

Mu Donglai said: "Xiao Pang, do you need any special equipment for this?" ”

Pang Xuelin pondered for a moment and smiled: "I need a computer and a recorder. ”

Qi Aimin said: "Xiaopang, we need to have computers and recorders, why don't we bring VCD discs to our school to burn?" ”

Pang Xuelin was waiting for Qi Aimin's words, and said with a smile when he heard this: "Professor Qi, then I'll trouble you." ”

"What's the trouble with that?" Qi Aimin smiled, "I still want to wait for your VCD disc to come out, how will this so-called VCD player perform." ”

Next, Pang Xuelin removed the LD laser disc player in the room, took two LD DVDs with him, and prepared to follow Qi Aimin to Sun Yat-sen University.

At this time, Liu Fatzi happened to come back.

Mu Donglai told Liu Fatzi about Qi Aimin's identity and everyone's purpose, and Liu Fatzi was immediately interested.

After all, up to now, the VCD player is just Pang Xuelin's empty words, although Liu Fatzi didn't doubt Pang Xuelin much, but there can be one more professor from Sun Yat-sen University to supervise on the side, then the VCD DVD player will undoubtedly have an extra layer of double insurance.

And Qi Aimin also said that Pang Xuelin's idea itself has a high degree of feasibility.

Next, everyone got into Liu Fatzi's van and went to Sun Yat-sen University.

Today is the weekend, and although there are many people in the school, there are not many people in the school building.

Qi Aimin took Pang Xuelin and them to a computer lab, opened the door and said: "Xiao Pang, there is an IBM PC here, how are you going to burn it?" ”

Pang Xuelin said with a smile: "Professor Qi, you go find a recorder, and I will do the rest." ”

VCD burning work requires a special recorder, but ordinary recorders can't record video on CD disks, and Pang Xuelin also needs to write a special VCD burning driver.

This kind of work is not very difficult for Pang Xuelin, and he only needs to modify the CD burning driver through the computer.

But for Mu Donglai and them, Pang Xuelin's next move brought them a great impact.

After turning on the computer and starting the programming tool, Pang Xuelin's hands quickly typed on the keyboard, and lines of code kept flashing on the screen, and Pang Xuelin's hands became phantoms.

In this era of two-finger Zen, there are not many programmers in the country who can smoothly use the keyboard to type code, let alone the speed of Pang Xuelin, who is almost integrated with the keyboard.

It is only those stenographers who have been specially trained that it is possible to have a typing speed like Pang Xuelin.

But they can only show their skills on the typewriter, not on the computer keyboard.

Even Qi Aimin couldn't help but exclaim: "Xiao Pang, you are incredible, how did you practice the speed of writing code?" ”

Pang Xuelin laughed: "It's just practice makes perfect, just practice a few more times." ”

Qi Aimin and Mu Donglai looked at each other, a little crying and laughing.

Today is the weekend, and although there are many people in the school, there are not many people in the school building. Qi Aimin took Pang Xuelin and them to a computer lab, opened the door and said: "Xiao Pang, there is an IBM PC here, how are you going to burn it?" ”

Pang Xuelin said with a smile: "Professor Qi, you go find a recorder, and I will do the rest." ”

VCD burning work requires a special recorder, but ordinary recorders can't record video on CD disks, and Pang Xuelin also needs to write a special VCD burning driver.

This kind of work is not very difficult for Pang Xuelin, and he only needs to modify the CD burning driver through the computer.

But for Mu Donglai and them, Pang Xuelin's next move brought them a great impact.

After turning on the computer and starting the programming tool, Pang Xuelin's hands quickly typed on the keyboard, and lines of code kept flashing on the screen, and Pang Xuelin's hands became phantoms.

In this era of two-finger Zen, there are not many programmers in the country who can smoothly use the keyboard to type code, let alone the speed of Pang Xuelin, who is almost integrated with the keyboard.

It is only those stenographers who have been specially trained that it is possible to have a typing speed like Pang Xuelin.

But they can only show their skills on the typewriter, not on the computer keyboard.

Even Qi Aimin couldn't help but exclaim: "Xiao Pang, you are incredible, how did you practice the speed of writing code?" ”

Pang Xuelin laughed: "It's just practice makes perfect, just practice a few more times." ”

Qi Aimin and Mu Donglai looked at each other, a little crying and laughing.