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124th new technology

Guangming Cinema was built by the Sanjiang Provincial Government in 1959 to celebrate the 10th anniversary of the founding of New China. It was the largest and best public entertainment venue in Yuncheng at that time. Based on the needs of the times, in addition to filming, it also takes into account mass mobilization meetings and singing, dance and opera performances. Therefore, under the big screen, there is a cement-casting rostrum, which is wide and long, which is somewhat similar to the main podium of product launch conferences of major IT companies 20 years later, but it is a bit far from the audience seats and more than 2 meters high. It needs to be taken up and down steps, which looks solemn and solemn, and it is very inconvenient to interact.

"Snapdragon is really interesting. It actually held a product launch conference in the cinema. Could it be that we were going to watch science and education films?"

"Who knows, the 8th boss is a genius, and ordinary people can't guess what he thinks. Just like last night, who could have thought that he could make a song in just a few minutes? It's comparable to Cao Zhi."

"Du Qiu has become completely popular all over the country this time. Do you know? When I came just now, I counted it on the newsstand. There were 13 newspapers reporting him in total. Except for 5 local newspapers in Sanjiang Province, the rest were all national newspapers."

"I saw that the reporter from the People's Daily has also come. Did they report it?"

"No, the People's Daily has always been slow to respond to folk activities, and it is estimated that it will not report it until today's Internet conference is over."

The screening room, which can accommodate thousands of people, was filled with seats. Amid the discussions between netizens and reporters, time came unknowingly at 8:59. All the lights that had been on the roof were turned off, and the screening room fell into darkness. After about 30 seconds, the projector rustled, and a mottled countdown screen appeared on the blank big screen.

“30,29,28…”

"This scene is so familiar. When I was a child, I watched an open-air movie on the threshing ground. Every time I started, I counted down every second, for fear of missing one."

"And I'm very excited, aren't you?"

"Yes, it's the same now. I hope Du Qiu can give us another surprise."

When the countdown ended, the round five-color logo of Snapdragon appeared on the big screen. The logo rotated like a windmill and continued to shrink. After it was reduced to the appropriate size, it stopped in the middle of the screen and stopped moving. Below, the company's Chinese and English name Snapdragon Technology Co., Ltd. appeared in a gradually visible way.

The world's first computer animation feature film "Toy Story" will not be released until November 1995. In August, most ordinary people have never seen computer-made animation effects. Although the opening animation of Snapdragon is very simple, the process is very smooth, vivid, three-dimensional, exquisite and fashionable, and has a cool and technological style. It is very different from traditional hand-painted animations, refreshing the audience below.

When the audience was attracted by the animation effect, Jiang Danfeng wore a red T-shirt with the same style as last night but fitted in size, walked up to the rostrum from the left step and said in Chinese and English: "Ladies and gentlemen, welcome to the 1995 Snapdragon Internet Product Launch Conference."

"The same T-shirt, I was flying up at the concert last night, but today I was so serious. Beauty Jiang is really a changeable queen. I really want to have a kiss on her."

"Stop dreaming. If you want money, don't have money, don't have talent. What should you use to snatch a woman from Boss 8?"

"The boss has not appeared this morning. I guess he was over-consuming last night, sore back and weak legs, and he was still resting haha."

Netizens thought that according to domestic practice, Jiang Danfeng would read a lengthy welcome speech, so they were a little absent-minded and chatted about gossip. Unexpectedly, after she finished her simple and concise opening remarks, she went straight to the topic and announced: "First, Mr. Du Qiu, CEO of Snapdragon Company, introduced the main content of this press conference, please applaud and welcome."

Amid applause, Du Qiu, wearing a blue T-shirt, walked up the rostrum along the steps on the right. When he took the microphone from Jiang Danfeng, several good people cheered like last night: "Kiss one, kiss one!"

Du Qiu turned a deaf ear to this, and Jiang Danfeng ignored it. He went down the left stairs of the big screen silently as when he appeared. Several netizens saw that the Snapdragon employees scattered in the crowd were sitting upright with serious expressions, so they stopped the noise awkwardly.

"At the opening ceremony on the morning of August 18, I compared the current Internet industry to the era of sailing in the 16th century, which contained countless opportunities to make a fortune. At the press conference on the afternoon of August 18, Yang Fan, the chief operating officer of Snapdragon, introduced the specific planning and operation methods of Snapdragon Software Park with a pragmatic and efficient attitude. After yesterday's visit and exchange, I think everyone should have a clearer concept of the potential of the Internet and the prospects of the software park..."

The film cannot be switched or played regularly like PPT, so the press conference adopts ancient manual operation. The speaker holds a radio transmitter in his hand. When it is necessary to switch the screen, press the switch to let the receiving device in the projection room emit a prompt sound and direct the projectionist to play or pause.

The projectionist is an old employee with more than 30 years of work experience. He is skilled and quick to react. After Du Qiu pressed the switch, the projector immediately began to rotate. The logo and company name on the big screen disappeared, and a famous oil painting "Argentei's Sailing Boat" by the Impressionist master Monet appeared. Several ships with white sails were parked on the calm river bank.

"The Internet is the sea, and the software park is the dock. If you want to make money from the sea, you still lack one very critical thing, that is knowledge. For a captain, you can go out to sea with the knowledge of using sails, navigation charts, compass and sextant. For a netizen, you can start a business with the knowledge of using operating systems, databases, eB servers and web design software."

Du Qiu pressed the transmitter again, switched to the next picture, and used the most intuitive structural diagram to show the relationship between the four computer technologies. When he explained the structural diagram, Jiang Danfeng and two employees moved a compatible machine to the computer desk on the left side of the rostrum. After turning on the computer, the screen was facing the audience, and at the same time turned on the camera on the tripod next to it.

At this time, the detailed configuration list of the computer and the corresponding price were displayed on the big screen. Du Qiu introduced: "This is a temporary assembly computer in the installation competition yesterday afternoon. All spare parts are used goods purchased from the second-hand market. The total value is about 8,000 yuan. The operating system has not been installed yet, and it is in a bare metal state."

"A few months ago, I registered a domain name and named it China.com, but it has not been put into use. In the next time, we will introduce the new Snapdragon product and install and debug it on the computer on-site. When the press conference is over, this computer will become a China.com server and officially put into use. Everyone can dial up and access the Internet on-site."

The audience immediately became interested. Many people knew that the distance was too far and could not see the screen clearly, but they still stood up and stretched their necks to look at the computer. You must know that in the minds of many people in 1995, Internet servers were very complex and expensive things. Unexpectedly, they only took a few hours to handle them with a second-hand computer.

"Damn it! If such a broken computer can be used as a server, as long as you have a computer and a telephone line at home, anyone can build a website."

"The experts from the Chinese Academy of Sciences have been working on it for more than ten years but have not developed domestic operating systems and database software. Snapdragon was built just a few months after it was established. Is it possible?"

"It is said that the operating system was repaired and repaired with the open source software from the United States. It has no technical content. The database was developed independently, but it is very simple and its functions are far less than those of foreign manufacturers such as Oracle and Sybase."

"It's better to be simple than nothing. Anyway, it's free, just use it. If you can get a great website, you can live a free life like Boss 8 in the future!"

After Du Qiu finished the opening introduction, he handed over the microphone and remote control to Jiang Danfeng and walked off the rostrum. Jiang Danfeng said a few playful words that were lively and the standing audience sat down. Then he directed the projectionist to project the resumes of James Twol and He Lixing on the big screen, introducing the two's positions and work content on Snapdragon.

"There are so many Snapdragon talents, even foreigners, and they are top students from prestigious schools."

"He is a top student, we are not. Now that we can't understand English at all."

"Jiang Danfeng should know how to translate, right?"

As a result, netizens were wrong. Jiang Danfeng didn't translate at all. He let James explain on the rostrum alone. His speaking speed was very fast, as fast as a Gatling machine gun. When he first introduced the history of the BSD operating system, ordinary netizens could also learn about it through Chinese character annotations and tree diagrams on the big screen, but when he began to explain the various technical points of the Android operating system, most netizens were completely blind.

However, not everyone is blind. There are two groups of experts who came to attend the Internet conference this time. The group of experts on distributed systems left yesterday afternoon, but the group of experts on the Internet still stayed in Yuncheng, waiting for this product launch conference. When James introduced that the Android operating system added Snapdragon's original event-driven i/0 multi-channel multiplexing technology kqueue, he was amazed and whispered.

If there is a factory that makes rag dolls, there are 50 workers in it. Whenever the worker has made the dolls, the quality inspector has to check whether there is any problem. At this time, there are two options. One is to hire 50 quality inspectors and arrange one for each worker. This check is very fast, but the cost is very high, and it is a waste of resources. Another way is to hire only one quality inspector and wait for the worker who has made the dolls to raise his hands before checking. This method that takes into account both efficiency and cost is called i/o multiplexing technology in the computer field, which is a very important function of the operating system.

This technology was implemented in the BSD operating system as early as 1983 through the select function, but the select function has many problems, such as poor ease of use, and can only listen to 1024 connections at most, and the efficiency will drop linearly as the connection increases, etc. However, the hardware performance was still very backward at that time, and the Internet was not developed. Few servers could handle thousands of links, so there was no big problem.

However, by 1995, hardware performance had increased many times and the Internet was also emerging. The links that servers had to process were no longer in thousands, but in tens or even hundreds of thousands. Selets were overwhelmed and urgently needed new technologies to adapt to the needs of the new era.

In the original time and space, in order to adapt to the needs of the development of the Internet, the linu operating system launched an improved poll function in 1997, and in 2002, it launched an innovative epoll function, which greatly improved the efficiency of i/o multiplexing. The kqueue function used by Snapdragon was taken out by Du Qiu from the freebsd4.0 version after 2000. It is alongside Linu epoll and Microsoft's iop, and is one of the most excellent i/o multiplexing technologies.

It has come up with new technologies 7 years ahead of linu, solving the urgent need for the development of the Internet. If promoted properly, the Android operating system will inevitably become a hit and seize the opportunity in the battle to compete for the banner of open source software...
Chapter completed!
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