The ups and downs of life in the Siheyuan

The test was continued for 16 hours every day for nearly a month, and a New Year's Eve test was completed.

Three days later, only one soldier was left in the two factories, waiting for the final results. Everyone else had left the base.

Li Yuan left the base two days later, visiting every now and then and staying at the base at other times to guide everyone in the design of MOSFETs and receiving circuits.

In order to allow everyone to quickly understand the characteristics of circuits, Li Yuan specially conducted a three-day circuit design course internally.

Let everyone have an in-depth understanding of digital circuits and analog circuits.

And leave you with a homework, design an operational amplifier.

There is no way. When designing the receiving circuit, the controllability of the triode is too poor and it is too sensitive to input, temperature, and noise.

The hardest thing to accept is the noise floor that cannot be eliminated.

Unable to bear it, Li Yuan thought of the op amp, put forward a bunch of index requirements, and threw them to the two teams of Huang Yan and Senior Brother Gong.

He started designing microprocessors himself.

If you want to design a chip, you must first design an instruction set.

The function of the instruction set largely determines the level of intelligence of this type of computer. It reflects the hardware functions and attributes of the microprocessor.

Without any hesitation, Li Yuan directly chose RISC (Reduced Instruction Set Computer).

Now that he has proven his strength, there is nothing to hesitate.

The biggest feature of RISC is the use of a large number of registers to ensure execution speed.

Considering the difficulty of heat dissipation and packaging, he did not concentrate all functions on one chip.

Instead, the ARM that is common in later generations is divided into a computing unit (CPU), RAM, FLASH and a low-speed peripheral.

All modules are connected by the CPU's external bus.

Relatively speaking, the most difficult part is the design of FLASH, but Li Yuan, who knows its principles, makes the design quite easy.

Compared with MOSFET, the basic structure of flash is to add a floating gate, which is the trick to prevent information from being lost after power off.

The inventor of FLASH is actually a Chinese named Mr. Shi. He was born in Nanjing and grew up and studied in Taiwan.

Afterwards, he obtained a PhD in Electrical Engineering from Stanford University. After graduation, he worked at Bell Labs for more than 20 years.

He invented the invention in 1967, and Bell Labs immediately registered a patent.

It was not favored by people at the time, and it was not until 1983 that the Nintendo game console was first used in Japan.

Then, this technology was also used in the BIOS of computers to make the boot speed faster. After entering the 1990s, the era of consumer electronics came, and flash memory began to shine.

"I'm sorry, Mr. Shi, this great invention will be owned by me," Li Yuan said secretly.

At the end of 1963, supplies improved slightly, and everyone was finally able to have a prosperous New Year.

As in previous years, Li Yuan and He Yuzhu celebrated the New Year together.

Location: East wing of the front yard.

This combination has become the strongest combination in No. 95 Courtyard. Even Xu Damao doesn't dare to provoke them.

The three uncles were polite to Li Yuanshi, knowing that he had no intention of getting involved in the management of the compound, and the two sides got along more harmoniously.

It's not because of Director Li Yuan's reputation, it's because this guy is too ruthless.

I was afraid that one day I would be thrown into the mountains by this kid.

At that point, even if Di Renjie is reincarnated, he still won't be able to solve the case.

The Spring Festival passed in a bustle, and with Li Yuan's subsidies, the Yang family's life was much easier.

At least, in addition to giving away something every now and then, they can also buy some food at a low price through Li Yuanping.

During the Lantern Festival, Li Yuan rode a three-bouncer and took Yang Ting, who was pregnant, around various temple fairs.

Looking at the lanterns, this Spring Festival, which has become lively again, is over.

As soon as Li Yuan arrived at the laboratory today, he was picked up by Representative Tong angrily.

"What's the result?" In the car, Li Yuancai remembered the test situation of the turbojet-6 modification.

"I thought you didn't care! I went to see you a few times at first, but later, you didn't go once."

"Oh, please stop complaining and tell me the result quickly."

"A meal of hot-boiled meat"

"Row!"

"Hahaha, after a total of 156 hours of operation, I heard an abnormal noise. Just when the test driver was about to take action, the engine automatically shut down. Your flight control system is too powerful."

"Haha, that can't be called a flight control system, it's just a design for collecting information and driving valves.

But I added a redundant heat sensor in the combustion chamber. When the set value is exceeded, the valve will be closed."

"The test driver also guessed the same."

An hour later, the two arrived at the base.

People were already crowding around the engine, including the old general.

"Xiao Li is here, take a look first and dismantle it later," the old general said enthusiastically.

"Okay, Chief."

After releasing his telekinesis, Li Yuan quickly knew the result. Sure enough, the radiator in the combustion chamber had broken.

After a pretentious inspection, he said, "Chief, the radiator in the combustion chamber is probably broken, but we can't rule out a problem with the turbine."

Next, Li Yuan started disassembling it himself.

His skillful movements once again shocked everyone present.

An hour later, the main components were placed on the canvas one by one.

Everyone stretched their heads to look at one of the combustion chambers and found that basically all the heat sinks were broken, and the other nine were also damaged to varying degrees.

"Chief, leaders, you see, except for the heat sink, other components are basically intact and should be able to continue working.

If the heat sink is improved, it is estimated that more than 200 hours can be achieved."

Everyone nodded in approval.

At this time, the test driver came over with the recorded data and analysis results.

He stood at attention and saluted everyone, "Dear heads, through data recording and analysis, the various indicators of the Turbojet-6 modification are as follows...".

Ten minutes later.

“The thrust increase is not obvious, with an average increase of only 5%;

Compared with the turbojet-6, fuel consumption saves 15% on average;

The most obvious improvement is the overall vibration, which is less than 6% of the turbojet 20.

Through our analysis, with such low vibration performance, in addition to the downstream hot zone components, the overall life of components in other zones should be increased by 3 to 5 times.

Especially the broken shaft, which is the most common fault phenomenon, can be significantly improved."

After hearing this, the old general looked serious.

"Where are the people from the two aircraft factories in the north and south?" He looked around.

At this time, two young men in their 20s stepped forward cautiously.

"I am a technician at the Northern Aircraft Factory."

"I am a technician at the Southern *** Aircraft Factory."

Seeing the two men with nervous and trembling expressions, the old general frowned.

"Can you represent the various aircraft manufacturers?"

After hearing the old general's question, the two of them immediately didn't know how to answer. Their eyes looked everywhere, trying to find the person asking for help.