Chapter 161 485 Network Bus

The inkjet printer prototype was tested for an afternoon and performed very steadily, after all, all manufacturing processes are set according to the quality control principles of later generations.

The Dawning 103 computer has reserved two DB9 interfaces, each DB9 has two 485 interfaces and one 232 interface, and the 485 interface can be turned into an Ethernet interface if needed in the future.

Therefore, connecting the printer does not require a new upgrade to the 103 computer motherboard.

After less than 5 months, Li Huaide went straight to the mechanical and electrical department with a printer, and he knew what a printer meant.

Sure enough, when he returned, he brought another order for 100 printers. The ex-factory price of the printer's order was set by him at 2,000 yuan.

The production of follow-up printers has nothing to do with the laboratory, and only Wu Liankui needs a headache. He has only produced 600 103 computers, and there are still 400 orders left undelivered.

Semiconductor Laboratory, Li Guocheng Office.

"Brother Li, when our factory tried the 103 computer, the mobile hard disk was easily damaged. Because the hard drive is heavy, if you accidentally drop it on the ground, it will be damaged."

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

"There's no way to do it now, let's be careful. You might also consider adding a cushioned jacket."

The biggest drawback of mechanical hard disk is vibration, and it seems that the next step is to consider the research of FLASH technology. But there are short-term solutions.

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

"Brother Li, I studied when I was making printer interfaces, but I don't know much about software", Yan Jiefang replied truthfully.

"That's good. We don't need to pass a lot of data right now, and it's possible to use the 485 bus."

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

"You see, as long as you connect like this, you can connect the computers around you. Of course, there is an upper limit of connection, and the specific number of units that can be connected depends on the results of the test."

Li Guocheng hopes that Yan Jiefang can also learn more interface knowledge, and the hardware design can be handed over to him in the future.

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

"Okay, Brother Li, I'll organize the test when I go back", Yan Jiefang was also eager to try.

"That's right, you call everyone to the conference room, and we'll have a short meeting", Li Guocheng suddenly thought of something.

"Is it the whole staff?"

"Yes!"

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

The operating system and ancillary software are collectively referred to as the software group, which occupies an office that can accommodate up to 20 people.

The lithography machine and etching machine share an office and are the same size as the software group.

The test team has an exclusive office with a capacity of 50 people, who are used both for office work and equipment testing.

The material group also has an exclusive office, the same size as the software. They have separate testing offices filled with a variety of materials and glasswork.

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

Zhang Tou didn't ask for an office, but moved directly to the dust-free workshop, and he felt that the main job was to study how to improve the diameter and purity of the single crystal rod, and the office was useless.

In consideration of the needs of follow-up work, several more reserved laboratories were built, and there are still 5 offices idle.

The small dust-free workshop is only the later workshop has been compressed to one-fifth of the previous size, and the other two rooms have not changed.

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

Although his real age is only 25 years old, the wisdom, calmness and maturity he usually shows make everyone ignore his age.

Li Guocheng first understood the status of the project in charge, praised the outstanding project team, and encouraged the project team that was lagging behind.

Then the conversation changed, "Up to now, all of us in the laboratory with high school education and below have been self-taught for more than half a year, and everyone's progress is still very obvious."

On the 20th of this month, the technical exchange night shift organized by the Ministry of Mechanical and Electrical officially opened, lasting for one year, and the certificate equivalent to a college degree was issued at the end of the meeting, which was located in 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 stabbed Wang Dayong, he shook his head again and again, and his teeth itched with hatred.

The day before yesterday, Li Guocheng asked Wang Dayong privately, and he said that he was unwilling, he thought that he was not the material for learning, and he was also very satisfied with his current work, and he was resolutely unwilling to use his brain to learn book knowledge.

At this time, Li Guocheng's eyes looked at Hu Bing, he noticed Li Guocheng's gaze, and smiled Yaoyao's head.

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

"If there were no other people, we would only report four people in our lab. The meeting was adjourned".

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

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

"Comrade Guocheng, please come to my office."

Listening to the voice, you can know that it is Li Huaide, and the word 'comrade' is used in the words, which means that there should be outsiders around him. Thinking of this, Li Guocheng tidied up his clothes and walked quickly to the office building of the rolling mill.

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

"Comrade Li Guocheng, these are two engineers from the *** research institute, and they need our help with some things," Li Huaide introduced to both sides.

As soon as the two of them heard that it was Li Guocheng, they immediately stood up happily, "I have admired the name for a long time!" ”

"You two are polite, I don't know what to call them?" Li Guocheng also responded politely.

"Contemptible Xiao Bing, he is Comrade Sheng Guodong."

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

"To make a long story short, we're using your Dawn 103 computer to calculate the trajectory of the ** missile, and the results are surprisingly good. So we wanted to put it on a certain type of missile, for navigation... ”。

"Excuse me, excuse me, can we listen to these secrets?" Li Guocheng hurriedly interrupted, the time to come is still here, but he still wants to struggle.

The two smiled, "Before we came, we applied for it, and the leader has approved it." Only by being honest with you can you truly understand our needs and thus solve our difficulties."

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

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(End of chapter)