The Science Fiction World of Xueba

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

"Old Qi, here..."

Mu Donglai waved his hand.

Qi Aimin is in his 40s, his head has always been a programmer, and has become a Mediterranean. Wearing a pair of black-rimmed glasses, he looks a bit like an old pedant.

"Donglai, where is the child you mentioned?"

"Still busy at home."

"Take me to have a look!"

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

Pang Xuelin was still pressing the button tick-tock, while Mu Qingqing stared at Pang Xuelin unblinkingly with her beautiful eyes.

Mu Donglai was a little embarrassed and coughed dryly.

Only then did Mu Qingqing come back to her senses, and realized that her father and another strange man had come over at some time.

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

"Hello, Uncle Qi!"

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

"Qingqing, hello, when I saw you last time, 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 blush, and said with a smile: "Uncle Qi, how can you say that about someone?"

At this moment, Pang Xuelin raised his head, looked at Qi Aimin and said with a smile, "Professor Qi, hello."

Qi Aimin couldn't help being a little surprised, and asked curiously, "You know me?"

Pang Xuelin said with a smile: "I have seen it in a 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 being taken aback, nodded, and squatted down to look at the circuit designed by Pang Xuelin.

After a 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,

Said: "Self-taught."

"Self-study?"

Qi Aimin was slightly taken aback, feeling a little unbelievable.

In this era, except for computer professionals, there are not many people who can really get in touch with computers. Those like Pang Xuelin who can design circuits by themselves through single-chip microcomputers, even graduates majoring in electronic information engineering at CUHK, can do it. The little guy can reach this level by self-study?

Not to mention, injecting machine code into the FPGA chip through the phone.

Just now he specially observed Pang Xuelin's code input process. Although he couldn't completely judge the structure of the machine language, there is no doubt that this little guy in front of him is not just pretending, but really injecting machine language into the FPGA chip. code.

This is a bit sensational.

Computer machine instructions are a series of binary numbers, which are converted into a series of high and low levels after being input into the computer chip, so that the computer's electronic devices can be driven to perform calculations.

Although the algorithmic instructions that Pang Xuelin injected into the FPGA chip were not large, but converted into machine language, it was at least tens of thousands of sets of binary codes. It was a miracle to input these instructions through the telephone without errors.

"Little brother, how did you do it?"

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

Qi Aimin almost spat out a mouthful of old blood.

It's hard?

This can't be done at all, okay? !

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

Both Qi Aimin and Mu Donglai were taken aback.

Mu Donglai asked curiously: "Little Pang, why haven't I heard you mention it before? Didn't you say that you dropped out of school after only studying in the third grade of primary school? The rest of the things are 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 met Professor Chen Wenyuan by accident. He thought I was talented, so he discussed with the principal Xu Baiqing about recruiting me. Going to Lanta to study in university, I will not be able to enroll until the second half of this year!"

Qi Aimin and Mu Donglai looked at each other, feeling that this little guy was talking nonsense in a serious manner.

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: "The library of Lanzhou University, when I set up a noodle stall in Lanzhou University, I went to the library to read books every day. After a long time, I learned it naturally."

Seemingly seeing the doubts on the faces of Qi Aimin and Mu Donglai, Pang Xuelin paused and continued: "For example, Professor Qi, you published the "Maximum Matching Weight Algorithm" in the fourth issue of "Journal of Electronics and Information Technology" in 1988. The realization of ", which puts forward a series of new concepts such as effective correlation matrix, ascending adjacency matrix, and the destination of points, and makes a lot of improvements to the algorithm of maximum matching weight, and compiles the algorithm into a corresponding program through FORTRAN language , debugged on the IBM-PC..."

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

After thinking for a while, Qi Aimin asked: "Xiao Pang, can you tell me about your understanding of the maximum matching weight algorithm?"

Pang Xuelin said with a smile: "Your maximum matching weight algorithm was first improved based on an algorithm with polynomial computational complexity proposed by Edmonds. The number of operations of Edmonds' algorithm is random, and it is related to checking outliers. The order is related, and every time an edge is checked, it is necessary to use a formula to judge whether it can become a branch on the interlaced tree. Also in this algorithm, although the odd circle has been shrunk into a pseudo point in the graph Gi, it is in During the whole operation process, the marks and potentials of the points in the odd circle are still being adjusted continuously, and in the whole operation process, although the odd circle and the shrinking odd circle continue to appear, the number of points and circles in the figure does not decrease accordingly .So you pass the effective incidence matrix, the ascending adjacency weight matrix and the ascending adjacency edge matrix, the destination of the point, the odd cycle matrix and the ejector, the expansion of the pseudo-interior point, the three-group method of the staggered tree, etc., the maximum of Edmonds The matching weight algorithm has been improved..."

Pang Xuelin eloquently explained the content of Qi Aimin's thesis.

Qi Aimin was both surprised and happy, and said with a smile: "Xiao Pang, I really didn't expect that you have conducted such in-depth research on my thesis."

"Research?"

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

Qi Aimin couldn't help being taken aback, and said, "How did you know so much about this algorithm without doing any research?"

Pang Xuelin said with an innocent face: "Isn't this normal? You will remember it after reading it..."

Qi Aimin was stunned for a moment, and then exchanged a glance with Mu Donglai.

A shocked expression appeared on Mu Donglai's face, and he asked, "Xiao Pang, what do you mean, you can memorize and fully understand any article after reading it once?"

Pang Xuelin nodded with a smile, and said, "That's right, because of this, Professor Chen Wenyuan and Professor Xu Baiqing rushed to accept me as a student, but I'm not in a hurry, let's talk about it after I go to university."

Qi Aimin and Mu Donglai could not help but look at each other.

Qi Aimin didn't know whether to laugh or cry: "Dong Lai, I only now understand why you called this kid a monster!"

Mu Donglai shook his head and smiled wryly.

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

Moreover, he has excellent skills, and he is calm in the face of danger.

But he never thought that in the academic field, the other party could bring him such a big surprise.

Mu Qingqing on the side also had bright eyes, the longer she spent with Pang Xuelin, the more mysterious she felt about Pang Xuelin.

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

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

Mu Donglai and Qi Aimin were not in a hurry, they sat aside and watched Pang Xuelin write and input the machine code with great interest.

In their view, this is simply a show of genius.

Time passed by one minute and one second, and about twenty minutes later, Pang Xuelin put down the phone and said, "It's done!"

Mu Donglai asked curiously: "Xiao Pang, what do you mean, you can use this to play VCD?"

Pang Xuelin smiled and nodded, just about to agree, but soon, he slapped his head and said, "I'm afraid not."

"What's wrong?"

Pang Xuelin said with a wry smile: "I'm busy making VCD players, but what about VCD discs? Ordinary discs can only store music. We have to find a way to burn a movie from an LD laser disc to a VCD disc."

Mu Donglai said, "Little Pang, do you need any special equipment for this?"

Pang Xuelin pondered for a moment, then smiled and said, "I need a computer and a recorder."

Qi Aimin said: "Little Pang, we have computers and recorders if we need them. Why don't you bring VCDs to our school to record them?"

What Pang Xuelin was waiting for was Qi Aimin's words. Hearing this, he smiled and said, "Professor Qi, I will trouble you."

"Where is it, what's the trouble?" Qi Aimin smiled, "I still want to see how the so-called VCD player performs after you get the VCD disc out."

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

At this time, Fatty Liu happened to come back.

When Mu Donglai told Fatty Liu about Qi Aimin's identity and everyone's purpose, Fatty Liu immediately became interested.

After all, until now, the VCD player was just Pang Xuelin's empty talk. Although Fatty Liu didn't doubt Pang Xuelin much, but with an extra professor from Sun Yat-sen University watching over him, the VCD player was undoubtedly an extra layer of insurance.

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

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

Today is the weekend. Although there are people coming and going in the school, there are not many people in the teaching building.

Qi Aimin brought Pang Xuelin and the others to a computer laboratory, opened the door and said, "Little Pang, there is an IBM PC inside, how are you going to burn it?"

Pang Xuelin said with a smile: "Professor Qi, go find the recorder, and leave the rest of the work to me."

VCD recording requires a dedicated recorder, but ordinary recorders cannot record video on CDs. Pang Xuelin also needs to write a dedicated VCD recording driver.

This kind of work is not too difficult for Pang Xuelin. He only needs to re-modify the CD recording driver through the computer.

But for Mu Donglai and the others, 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 tapped on the keyboard, lines of codes flashed on the screen continuously, and Pang Xuelin's hands became phantoms.

In this era when the two-finger Zen is common, there are not many programmers in the country who can fluently use the keyboard to type codes, let alone the speed that is almost integrated with the keyboard like Pang Xuelin.

Only those stenographers who have been specially trained can have the typing speed of Pang Xuelin.

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

Even Qi Aimin couldn't help exclaiming: "Xiao Pang, you are so unbelievable, 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 dumbfounded.

Today is the weekend. Although there are people coming and going in the school, there are not many people in the teaching building. Qi Aimin brought Pang Xuelin and the others to a computer laboratory, opened the door and said, "Little Pang, there is an IBM PC inside, how are you going to burn it?"

Pang Xuelin said with a smile: "Professor Qi, go find the recorder, and leave the rest of the work to me."

VCD recording requires a dedicated recorder, but ordinary recorders cannot record video on CDs. Pang Xuelin also needs to write a dedicated VCD recording driver.

This kind of work is not too difficult for Pang Xuelin. He only needs to re-modify the CD recording driver through the computer.

But for Mu Donglai and the others, 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 tapped on the keyboard, lines of codes flashed on the screen continuously, and Pang Xuelin's hands became phantoms.

In this era when the two-finger Zen is common, there are not many programmers in the country who can fluently use the keyboard to type codes, let alone the speed that is almost integrated with the keyboard like Pang Xuelin.

Only those stenographers who have been specially trained can have the typing speed of Pang Xuelin.

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

Even Qi Aimin couldn't help exclaiming: "Xiao Pang, you are so unbelievable, 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 dumbfounded.

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