Riding the wind of rebirth

"Elbow, you missed class today!" When Zhou Zhi returned to the dormitory in the evening of the next day, Zhang Qianyi asked, "Why did you go? Fortunately, the teachers don't know much about them, so he didn't notice when we randomly agreed to the roll call." .”

Now the teacher likes to roll call, and credits will be deducted if there are too many absences.

But most of them are just formalities. Unless the popularity is too bad, there are always classmates to help.

"I asked for leave." Zhou Zhi said, "I have something to do with the computer department today."

After speaking, he put the plastic bag in his hand on the table: "Spicy chicken, who will eat it?"

"Oh." Zhao Xing consciously took out his wallet: "Bottle, I'm short of beer, go get a box from Mama Zhang!"

Then he said: "I heard that there is a big boss in the computer department, Li Leshan, the eldest son of Mr. Li in Hong Kong Island?"

"Who is Li Leshan? Isn't Li Qiyan's son Li Lehai?" Today's information is not as developed as in the coming Internet age, and here is a liberal arts dormitory. I only know Li Qiyan's successor, but I don't know the information technology tycoon on the other side of the ocean. .

Recently, the wedding of Li's second child has caused a lot of uproar, and everyone knows about it.

"Li Lehai is the second child." Zhao Xing is from Guangdong Province, and belongs to the radiation area of ​​Hong Kong Island TV Station. He knows this very well: "The boss of the Li family is Li Leshan, who works in computers and works as a professor in the United States. He is very low-key."

After speaking, the thief asked with interest: "Elbow. Did you see him today?"

"Boss Li is here to visit the 863 project jointly developed by our department and the Department of Computer Science," Zhou Zhi said, "It's the Chinese character library adopted by Microsoft and Apple."

"Then what does it matter to you?" Xu Gang asked, "By the way, Tong Xiaolin and Li Yijia asked about you today."

"I told you before." Zhou Zhi smiled and said, "I have an idea about the supermarket system. Others are very interested, and they plan to cooperate with our school, and the project has been approved."

In fact, in Zhang Guanli Dai, Heheng’s POS supermarket system has already been developed and put into application. Today’s discussion is how to upgrade this system to the CD version, which is the data centralized-distributed operation version. This is an online version and A transitional version between the original centralized versions.

It is mainly a question of finalizing the idea, because there are many methods to achieve data centralized and distributed operations. Zhou Zhi has already brainwashed several princes of the Li family. The interface has to be done in advance.

In other words, in the future, Red Star supermarkets distributed throughout Shudu will install a data service terminal and connect to code scanners, printers, cashier counters and other facilities to form a small distributed POS system.

The data interface of this system will use the standard FTP interface instead of the floppy disk drive which is traditionally the easiest to use for information exchange.

Although the mobile computer must be transported by vehicle to the service terminal every night for data collection and exchange, and then transported back to the data center to transfer the data to the S terminal for batch settlement. After completing inventory, accounting and other management and liquidation work, it will be updated again in the morning. The final data is sent back to each service terminal for loading, and then the day's work begins.

The disadvantage of doing this is that the cost of data transfer is relatively high, and a mobile computer is required for data transfer.

But there are also many benefits. Once the network is smooth in the future, this system can ensure that the C-side of each service can exchange data with the S-side after being directly connected to the network, and the system changes involved will be minimized.

With this complete solution, you don't have to worry about breaking down the architecture and starting anew when developing the online version in the future.

This solution also has advantages and disadvantages, that is, if it is to be convenient to use, the mobile computer is a bit larger, it is best to use a removable removable storage device that can be directly plugged to meet the needs.

The reason why it is said to be both bad and good is that such a device does not yet exist and needs to be developed.

The advantage is that the technology is already mature, and the research and development of mobile storage itself is not too difficult. Only a flash memory is needed as a data cache, which can solve the problems of data transmission interruption caused by jitter and other reasons.

The rest is iterative issues such as data capacity, power life, and equipment volume.

Once the research and development is successful, in addition to being used as a transfer medium for data clearing, this device can also be used to store music, add an audio decoder, and add a button to turn it into a digital audio device;

It can also be combined with a video decoder and a gamepad to become a game console.

In short, the application prospects of various peripherals are very broad.

Regarding this application, Zhou Zhi defines it as "the former network FTP application", which is used to correspond to the most important and widespread FTP file transfer protocol in the coming Internet era.

FTP is actually a very old protocol. It was proposed in 1971, but it has been put to great use recently.

It itself is a set of standard protocols for file transfer on the network, allowing users to communicate with another host in the form of file operations.

In this process, the user does not actually log in to the computer he wants to access to become a full user, but uses the FTP program to simulate the user interface, realize remote resource access, transfer files back and forth, and perform directory management.

Even across operating systems and file storage methods, there is no problem in transferring.

Using this protocol for data transmission requires a lot of extra work compared to directly accessing the C-side hard copy with a disk, but adding the access permission package can make the data more secure, confidential, fast and convenient.

Better prepare for the future.

Li Leshan appreciates this idea very much, so it has become an industry-university-research joint project jointly invested by Shu University, Heheng Group and Jinli Group, and because it conforms to the current mainstream of "informatization" scientific research, it has also been approved by ministries, commissions and provinces. Strong support from the government.

But I sat down and chatted with everyone last night. It is a lie to say that I work in the computer department. Zhou Zhi’s main task today is to accompany Lin Wanqiu to browse and appraise in the Sichuan University Museum. In fact, it is quite tiring .

In addition to the identification of a number of important cultural relics such as the Dustan sapphire inlaid gold bowl traced by Qianlong, Zhou Zhi also discovered many cultural relics in the collection, especially paper relics and silk relics, which are really in a worrying state.

Although many protective measures have been taken to control the tens of thousands of calligraphy and painting collections, and problems such as mildew and insects have been controlled, more than half of them still have problems such as fracture, erosion, and aging.

Judging by Zhou Zhi Yanggong's standard vision, all these collections need to be re-mounted.

Thinking about the more than 100 "Comprehensive Maps of Bashu" estimated to be restored, Zhou Zhi felt that he had a heavy responsibility.

"Elbow, with your posture, can you transfer to the computer department?" Huang Ruishan asked, "That's a very popular major. I heard that the winter vacation is over, and the graduates have already been snatched up by all departments. All good units!"

"That's right, I heard that several graduate students were attracted by IBM, do you know how much they pay?" Zhang Qianyi asked.

"How much?" Huang Ruishan hurriedly asked.

"In terms of annual salary, it's [-]!" Zhang Qianyi said, "It's equivalent to a salary of [-] per month, plus a double salary for the last month, and [-] for Christmas!"

"My darling..." Huang Ruishan was dumbfounded: "This month, I'm going to work for my parents for a year!"