The motherboard has been completed, and the next step is soldering, Yan Jiefang personally completed the welding of 6 control motherboards.

"Yes, the next step is the test, the focus is on the various parameters of NOR FLASH, and we must achieve full coverage," Li Guocheng instructed.

"Okay, Brother Li. By the way, Zhang Zhijing informed me just now that the 485 bus has been tested, let's go over and have a look."

Yan Jiefang handed the 6 boards to his team members, and then remembered the matter of the 485 bus.

Li Guocheng and Yan Jiefang came to the software group, and as soon as they entered the door, they saw three people sitting at their desks, their eyes staring at the screen, and giggling from time to time.

When Yan Jiefang was about to make a reminder, Li Guocheng stretched out his hand to stop him.

On all three computers, there is a small pop-up window, which is an improvement over the previous flat structure, and the send button has a bit of 3D rendering.

Everyone is right, they are playing a small task given to them by Li Guo, a timely communication applet: Feixin.

After looking at it for a while, Li Guocheng gently patted Zhang Zhijing's shoulder.

"Ah, it's Brother Li! We are testing the Fetion program and network communication performance," Zhang Zhijing excitedly said.

"What's going on?"

"The network can connect up to 36 units, with a communication rate of 100Kbs, and the maximum connection distance is 10 meters, and if it is a communication rate of 10Kbs, the maximum connection distance can reach 100 meters.

As you can see, we only send text, and the maximum delay is 3 seconds, and if 36 units work together, the maximum delay is more than 10 seconds."

Li Guocheng thought for a while, "The 485 bus is still too slow, let's consider special chips in the future, and the current CPU is like this." But now it's enough, just to transfer some text data, which is more economical than a hard drive.

It doesn't make much sense to cancel the relay, and consider using hard disks or dedicated memory for long-distance communication."

Li Guocheng, who returned to the office, thought about whether to consider developing Ethernet now, the 7-layer structure will be known to future generations as an engineering student, but the specific details, Li Guocheng has long forgotten.

But if you develop the network, this is definitely not enough, "Forget it, I'll study the theory first, the software team is too small, let's continue to optimize the operating system and develop applications."

At the beginning of July 1969, exactly three months, without waiting for Li Guocheng to inform Xiao Bing, he ran to Li Huaide's office early.

"Xiao Gong, fortunately, this is 6 samples, this is the instruction manual, and there are example programs for communicating with the Shuguang 103 computer," Li Guocheng said as he introduced the information on the table.

"Oh, by the way, let's develop a gadget and see if it works for you? Let's go to the lab and demonstrate it directly", he said, and stood up.

Xiao Bing carefully put everything into his bag, carried it on his back, and followed Li Guocheng to the laboratory. Li Huaide also followed with great interest.

took the two of them to Zhang Zhijing's back and explained their intentions to her, "Director, Xiao Gong, you are watching here, I'll go back to the office first."

In the blank eyes of the two of them, Li Guocheng hurried back to the office and typed directly into the flying letter, "Director, Xiao Bing, hello!" ’。

Under this Zhijing's reminder, the two saw the information in the Feixin communication box, and they looked at each other blankly.

"What do you want to say, two leaders?" Zhang Zhijing asked.

"Li Guocheng, did you say that?" Because Director Li understood Li Guocheng, he quickly reacted and tried to say something.

"Yes, I say hello to you in my office!"

"Xiao Zhang, you get up, I'll try", Li Huaide was itching.

Xiao Bing, who reacted, ran to Li Guocheng's office.

"Xiao Li, I'm Li Huaide, hello!" Are you familiar with it? In the early days, a certain chat software, everyone used it like this.

"It's me, I'm in the office and I want you to say hello!".

"Have you eaten?" , Li Huaide continued to talk awkwardly.

"Hello Director Li, I'm Xiao Bing, I've eaten!".

"It's Xiao Gong, hello!".

"Hello, Director Li!".

。。。。。。。

It's so unpretentious, it's just so unnutritious, but this is the daily routine of using a chat software for the first time at that time.

"This thing is a little interesting, get me a set, give me a copy of the manual and the execution program", Xiao Bing was still a little unsatisfied.

"Liberation, you help prepare".

"Right now".

Xiao Bing left satisfied, still immersed in the magic of chat software on the way.

Originally, Li Huaide wanted to connect all the computers in the rolling mill, but he gave up as soon as he heard the transmission distance.

Li Guocheng recorded his research on the network on a computer notepad, and now he has more than a dozen technologies to be developed.

Once the op amp design is complete, it's time to prepare the chip and test. The birth of the op amp had a very far-reaching impact on automatic control, and Li Guocheng wrote an outline to determine the test content, which was convenient for the future formation of a guide book for publication.

After Li Guocheng wrote the test outline and chip description, he handed it to Yan Jiefang, asked him to design the test circuit board, and arranged personnel to test it.

Three days later, Li Guocheng, who was designing a DAC, was interrupted by a phone call.

"Hey, I'm Li Guocheng."

"I'm Li Huaide, come to my office."

Li Guocheng heard something from Li Huaide's formal tone, didn't think much about it, got up and walked to the factory office building.

knocked on the door and entered the office, and the three people who were getting up were in sight, Xiao Gong and two soldiers, one of whom was wearing glasses. According to the four pockets of the jacket, it means that they are officers, and the specific position is not visible.

"Li Gong, take the liberty to visit, have something to ask for", Xiao Gong simply pointed out his intentions.

"It is an honor for our rolling mill to be able to help", which means that he and the rolling mill are one.

Li Huaide nodded with satisfaction and imperceptibility.

"These two are Ma Jianmin and Gong Jiefang of the *** General Staff," Xiao Gong introduced.

The two soldiers stood up and saluted, and Li Guocheng hurriedly stretched out his right hand and shook hands with the two.

"For the specific situation, please tell you about the two comrades", Xiao Gongdao.

"Li Gong, hello", Ma Jianmin said politely.

"Hello, Comrade Ma".

"The purpose of this visit is to talk to you about the Internet and Feixin. After our internal testing, we found that Feixin is the best tool in decentralized command, but the speed and distance of the network are the bottleneck.

So I don't know if there is any way for you to increase the speed and distance of the Internet", the two soldiers who finished speaking looked at Li Guocheng with anticipation.

Li Guocheng was a little in a trance, could it be said that history cannot be changed, but the ugly country has been replaced by China.

Thank you all for your support!! Ask for recommendations! Ask for a commuter pass! Ask for a review!

I accompanied the old man to recheck today, so the rhythm of the article release is a bit chaotic. Thank you for your understanding.

(End of chapter)