Siheyuan: Starting from a fitter

Chapter 161 485 Network Bus
The inkjet printer prototype was tested for an afternoon and the performance was very stable. After all, all manufacturing links are processes set according to the quality control principles of later generations.

曙光103型计算机预留了两个DB9接口，每个DB9有两个485接口和一个232接口，以后如果有需要，可以把485接口变成以太网接口。

Therefore, there is no need to re-upgrade the 103 computer motherboard to connect the printer.

Less than five months later, Li Huaide went straight to the Mechanical and Electrical Department with another printer. He knew what a printer meant.

Sure enough, when he came back, he brought another order for 100 printers.He set the ex-factory price of the printer order at 2000 yuan.

The subsequent production of printers has nothing to do with the laboratory. Wu Liankui is the only one who needs to worry about it.He has now produced only 103 units of the Model 600 computer, and has orders for 400 units that have not yet been delivered.

Semiconductor Laboratory, Li Guocheng's Office.

"Brother Li, when our factory was trying out the 103 computer, the mobile hard drive was easily damaged. Because the hard drive is heavy, it will be damaged if it is accidentally dropped on the ground."

As soon as he got to work today, Yan Jiefang found Li Guocheng and explained the problem of the mobile hard drive.

"There is nothing we can do now, so everyone should be careful. You can also consider adding a buffer jacket."

The biggest flaw of mechanical hard drives is vibration. Next, it seems that we need to consider research on FLASH technology.But there are short-term solutions.

"Jiefang, do you know anything about the 485 interface?" Li Guocheng asked.

"Brother Li, I learned about printer interfaces, but I don't know much about the software," Yan Jiefang answered truthfully.

"That's good. The data we need to transmit now is actually not large. It is also feasible if we use the 485 bus."

As Li Guocheng spoke, he took a piece of white paper and drew the connection relationship of the 485 bus on it.

"You see, as long as you connect like this, you can connect surrounding computers. Of course, there is a connection limit. How many computers can be connected depends on your test results."

Li Guocheng hopes that Yan Jiefang can also learn more interface knowledge, and he can be responsible for hardware design in the future.

"If the two computers are too far apart, you can also set up a relay, just like a relay. How to write the relay software, you ask Zhang Zhijing to cooperate."

"Okay, Brother Li, I will organize the test when I get back." Yan Jiefang was also eager to try.

"That's right, you call everyone into the meeting room, let's have a short meeting," Li Guocheng suddenly thought of something.

"Is it everyone?"

"Correct!"

The new semiconductor laboratory consists of two parts: office area and clean room.

The operating system and auxiliary software are collectively called the software group and occupy an office that can accommodate 20 people.
The lithography machine and the etching machine share an office, which is the same size as the software group.

The test team has an exclusive office that can accommodate 50 people. They are used both for office work and equipment testing.

The materials team also has its own office, which is the same size as the software.They have separate testing offices filled with various materials and glassware.

The display group is also a separate office and is the same size as the test group.

Zhang Tou did not ask for an office and moved directly to the dust-free workshop. He felt that the main job was to study how to improve the diameter and purity of single crystal rods, and the office was useless.

Taking into account the needs of subsequent work, several more reserved laboratories have been built, and there are still 5 unused offices.

The small dust-free workshop was only a later workshop that was compressed to one-fifth of its previous size, and the other two remained unchanged.

In the semiconductor laboratory, everyone is sitting upright.As laboratory results emerged one after another, Li Guocheng's prestige in their hearts grew.

Although his real age is only 25, his wisdom, calmness and maturity make everyone ignore his age.

Li Guocheng first understood the status of the projects everyone was responsible for, praised the project teams with outstanding performance, and also encouraged the project teams that were lagging behind.

Then the conversation changed, "Now, all those in our laboratory with a high school degree or below have been self-study for more than half a year, and everyone's progress is still very obvious.

On the 20th of this month, the technical exchange night class organized by the Ministry of Mechanical and Electrical Engineering officially started. It lasts for one year. Upon completion, a certificate equivalent to a college degree will be issued. The location is the fourth conference room of the ministry.

There are 5 places in our laboratory. Zhang Zhijing, Zhou Xiaojuan, Yan Jiefang and I must participate this time. Are there any others who are willing to sign up? "

Zhang Tou poked Wang Dayong once, and he shook his head repeatedly, his teeth itching with hatred.

Li Guocheng asked Wang Dayong privately the day before yesterday, and he said he was unwilling at that time. He believed that he was not good at learning, and he was very satisfied with his current job and was determined not to use his brain to learn book knowledge.

At this time, Li Guocheng's eyes turned to Hu Bing. He noticed Li Guocheng's gaze and smiled.

Several college students have no desire to sign up, after all, they only have a certificate equivalent to a college degree after graduation.

"If there are no others, our laboratory will only register 4 people. The meeting is adjourned."

Not long after returning to the laboratory, Li Guocheng, who was thinking about the AD chip architecture, was interrupted by a phone call.

"Hello, hello, I'm Li Guocheng."

"Comrade Guocheng, please come to my office."

You can tell from the voice that it is Li Huaide. The word "comrade" is used in the words, which means there should be outsiders around.Thinking of this, Li Guocheng straightened his clothes and walked quickly to the office building of the steel rolling mill.

After knocking on the door and entering, I saw two men in Chinese tunic suits sitting on the sofa smoking.

"Comrade Li Guocheng, these are two engineers from the *** Research Institute. They need our help with something," Li Huaide introduced to both parties.

When the two heard that it was Li Guocheng, they immediately stood up happily and said, "I have admired your name for a long time!"

"You two are polite, I don't know how to address you?" Li Guocheng also responded politely.

"I am Xiao Bing, he is Comrade Sheng Guodong."

The speaker was a middle-aged man about 40 years old, wearing a pair of thick-soled myopia glasses.Sheng Guodong is a young man in his 30s with red eyes.

"To make a long story short, we are using your Dawn 103 computer to calculate missile trajectories, and the effect is surprisingly good. So we want to put it on a certain missile for navigation...".

"Sorry to interrupt, can we hear these secrets?" Li Guocheng interrupted hurriedly. What was supposed to come came, but he still wanted to struggle.

The two of them smiled and said, "We applied before coming here and the leadership has approved it. Only by being honest with you can you truly understand our needs and solve our difficulties."

"Then you continue", Li Guocheng could only choose to face it.

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(End of this chapter)