After Han Feng's revelation, Zhu Jun didn't have the face to stay any longer, and left with a red face, cursing the writer of the software as he walked, and at the same time secretly made a decision in his heart, he would no longer study like before in the future, and he would have to dabble in and study more technology outside of books, so as not to be ashamed like today.

"Hehe, I'm still good, I don't need to do anything to know that this software is fake. Li Wang's face showed smugness, and he was self-absorbed and continued, "Crazy, as we expected, your computer technology is also quite powerful, no wonder the pot is so powerful, and he said that he is not sure to compare with you." You're a pervert, you're so good at everything! Around you, geniuses like me have become mentally retarded. ”

Han Feng stayed in the bedroom for a while, and Chu Shuai also came back, humming a relaxed tune in his mouth, with a sweet face.

Before he could walk in the door, Li Wang, who heard the voice, shouted, "The is back." ”

Chu Shuai smiled and walked in: "I'm a nymphomaniac, what's wrong? Someone can't be a nymphomaniac if they want to, quack!"

After coming in, he found Han Feng and said in surprise: "When did the madman come back?"

Han Feng said: "It didn't take long, it happened to be okay today, come and have a look." ”

Chu Shuai was a little pleased: "You came back just in time, come and see the results of my hard work during this time." ”

"What results?" Li Wang was very strange.

"Prepare for the hacking competition!" Chu Shuai said while taking out his notebook, "Last week, the organizer of the hacking competition officially announced the content of this competition, and the inside information of the madman is really accurate, the original content of this competition is mainly encryption and decryption, but later several items were added. Including network intrusion and anti-intrusion, as well as compression and decompression...... This time, the organizers also teamed up with Thecomonoad, a well-known DEmo team from Sweden, to bring forward the DEmo tournament that will be held next summer, and I heard that the two competitions will be combined into one major event. ”

Li Wang heard it in a fog, and he couldn't understand what Chu Shuai was saying at all.

"Why is it related to DEmo again? Could it be that this hackathon still has cG animation?" asked Li Wang. He is more familiar with games and anime, and this is the first thing that comes to mind.

Chu Shuai nodded his head: "The DEmo I am talking about here is not the DEmo version of the so-called games released by those game companies, in the field of hacking, DEmo represents another meaning. ”

"What the hell does that mean?"

"Just look at this. ”

At this time, Chu Shuai's system had been activated. He entered a folder on drive D, pointed to an EXE file named "Comet Hit Earth" in it with his mouse, and said: "Have you seen this executable file? This is the award-winning work of the global DEmo competition that year." ”

"A comet hits the Earth?"

Chu Shuai prompted: "Pay attention to the size of this file. ”

"63.4K?" Li Wang didn't quite understand what Chu Shuai meant.

Chu Shuai did not speak. Double-click to open the file.

Suddenly, the monitor went black. Li Wang was startled, and when he was about to ask if the computer screen was black, a picture began to appear on the monitor. First a progress bar, then black again.

Then, a cloud of light suddenly appeared in the pitch-black display, and as the camera slowly pulled away, it turned out to be an asteroid that was shining rapidly in the pitch-black universe.

After a while. This asteroid has come to a piece of the universe. A blue planet appeared in the depths of the background, and Li Wang was very familiar with that blue planet. It's clearly the earth.

Immediately afterward, the camera cuts to Earth, revealing a lush landscape. The natural world is full of life, with blue skies, white clouds, green grass, rivers, and ......

What follows is a bustling metropolis where people are in a hurry and live a very fast-paced life.

Seeing this, Li Wang was already very surprised, because he suddenly realized that this thing seemed to have been running for a short time, at least for more than a minute.

The picture is 3D, quite realistic, and many of the game cG animations that Li Wang has seen can only achieve this effect, and this animation also has background music.

Li Wang was secretly surprised, he somewhat understood what Chu Shuai meant by DEmo.

The animation continues.

After the image on Earth, the screen starts to switch to the asteroid again.

In the next picture, Li Wang also guessed that the asteroid finally hit the earth, bringing a devastating disaster to the earth.

The picture is very dazzling, and the 3D effect is also very good, Li Wang almost thought that it was a trailer shot by a film company for a certain 3D animation.

After the DEmo ended, Li Wang was very shocked and asked, "Is this the effect of the EXE file running less than 64K just now?!"

Chu Shuai nodded: "This is the DEmo of the hacker world, unlike those commercial DEmo animations, these DEmo works are the result of program optimization, giving full play to the extreme potential of computer hardware, and everywhere reflects the profound programming skills of DEmo makers, achieving amazing results." You know, 3D animation for so long takes up less than 64K!"

Li Wang really couldn't understand how it worked: "Oh my God, how did this happen?"

Chu Shuai looked at Han Feng and said, "I don't know very well, I heard that to make a DEmo like this, you need a team." Crazy people probably know, though. ”

Of course, Han Feng knew that he had played this himself, but he hadn't seen the work of comet hitting the earth, and it should have appeared later.

Li Wang then asked Han Feng: "Crazy, do you know? Tell me about it, this thing is really amazing! Such a small thing has been playing for almost ten minutes!"

Han Feng felt that there was nothing to hide about this, although this thing was magical in the eyes of others, but the principle was not complicated. Boiling ++++++++ Teng+++++++ members of the Literature and ++++++ School hand-beaten

"The core of DEmo, in fact, is the compression and decompression algorithm, you see the progress bar at the beginning of the screen, that is actually a decompression process, these programs are self-decompressing. To achieve this effect, these programs usually need to be written in assembly language, because only assembly language can achieve such an optimal effect and give full play to the power of hardware. In addition, DEmo often has to enter a special drawing mode, which is called X mode. The very dazzling 3D effects I just saw are actually programmed for the graphics card in real time, and only in this way can the volume be greatly saved. Also, have you noticed those pictures in DEmo, if you observe carefully enough, you will find that many things in it are actually repeated, composed of the same geometric figures, and repeated things are often best compressed, because as long as you mark out a place to save that figure, and other duplicates, as long as you call that figure again, the same is true for music, turning over and over, there are always so many tones...... "Han Feng said it very popularly, and it was also probable, even Li Wang, a computer novice, understood it.

"Guozi is right, to make a DEmo, you do need a team, just like a game team, the DEmo team usually has a team leader, he is responsible for the overall planning, the programmer is definitely a must, he is responsible for designing the entire DEmo program, considering what kind of algorithm to use to compress and decompress it, in addition to the need for a dedicated composer and artist, responsible for music and graphics respectively. Of course, if you're strong enough, you can do it all by yourself. "Han Feng often played all the roles by himself back then, and of course, he also worked with other people, who were all leaders in various fields, and did these things purely for fun and to show off his technical level.

Although Chu Shuai guessed that Han Feng must have heard of this, he didn't expect Han Feng to understand these things so clearly, and he said it well.

He was a little excited: "Crazy, have you ever made such a DEmo with your own hands?"

Han Feng shook his head: "No, I just understand the principle." ”

Chu Shuai continued to ask: "How do you know? ”

"Uh...... I forgot the last time I watched it at a forum abroad, and I forgot which forum. If you look on the Internet, you should be able to find these things, and these things are not a secret. "Han Feng is not wrong, these technologies are not secrets, but the core technology is only circulating in a small circle, and without real strength, you can't touch these things, because others don't bother to communicate with you at all.

Chu Shuai was a little disappointed, although his English was good, it was not easy to find these things.

At this time, Li Wang suddenly said: "Guozi, didn't you say that you want to show us your results? You have been busy for so long during this time, what results have you produced? Could it be that what you make is also DEmo?"

After his reminder, Chu Shuai's spirit reinvigorated: "I have been studying encryption and decryption algorithms during this time, not this. ”

As he spoke, he opened another folder.