The ups and downs of life in the Siheyuan

The two walked into the hall, and all the dozen or so people stood up to greet them.

They know who the real boss of this laboratory is, even senior brother Gong Liming.

Maybe they felt uncomfortable before, but since they learned that the laboratory here was completely designed by Li Yuan and the operating procedures were formulated, they were a little shaken.

In addition, the country is willing to build a special laboratory for Li Yuan, which shows how much his superiors value him.

Taking a two-pronged approach, they felt that there was no shame in following Li Yuan.

"Senior brothers and sisters, I'm sorry to keep you waiting for so long."

Li Yuan walked a few steps quickly and apologized to several people.

Gong Liming was the first to step forward, extending his hands early and keeping his posture low enough.

Li Yuan took a quick step, bent down slightly, and clasped his hands.

"Brother, with you here, the laboratory is stable!".

After saying that, the two looked at each other and laughed.

Gong Liming knew that Li Yuan still recognized him as his senior brother, and he didn't have a braid.

Huang Yan was next, and he stretched out his right hand with a smile.

Li Yuan also bent down to shake hands, "Senior sister, we can fight side by side again in the future."

Huang Yan smiled and nodded, "Sister, I will hang out with you from now on."

"You don't dare to say that, you are the pillar of our place."

Then Li Yuan and the other two teachers greeted him politely.

The rest were all senior brothers and sisters, and Li Yuan greeted them politely one by one.

When these students saw that the teachers in the school treated Li Yuan so politely, they all behaved extremely respectfully.

They were all acquaintances, and Li Yuan didn't talk nonsense and just got to work.

Most of the components of the vacuum lifting furnace, oxidation furnace and hydrogen reactor designed in the past have been shipped over and are being stacked in the dust-free workshop.

Everyone else entered the other two ordinary laboratories and started their own work.

The four laboratories are about the same size, each covering more than 4 square meters, with thick wooden pillars supporting the dome in the middle.

Li Yuan and Master Xiao put on dust-proof suits and leather tanned and polished gloves. After dust removal, they entered the first dust-free laboratory.

It is divided into two parts, the larger one is the cutting and polishing workshop.

The smaller part is used to house the vacuum lifting furnace and oxidation furnace.

Both vacuum furnaces have independent vacuuming equipment. Placed next to the dust-free laboratory.

The space where the vacuum extraction equipment is stored is a regular basement.

There is a double-glazed window between it and the dust-free workshop for observing the operation of the vacuum extraction equipment.

Through the switch set in the dust-free laboratory, the start and stop of the extraction equipment can be controlled.

If maintenance is required, enter from the substation side.

Now the two are working together to install the vacuum lifting furnace.

Li Yuan is familiar with the equipment and components, and has skills no less than a level 5 fitter, acting as an assistant.

Master Xiao is the main force in the installation, and the two work together well.

With Li Yuan joining, Master Xiao's work is extremely easy.

Some parts that require two people to lift can be lifted by Li Yuan without hinges at all.

For parts that require hinges, Li Yuan can place the heavier parts firmly into the correct position.

In the past, every time Master Xiao installed equipment with such high requirements, he was very careful for fear of accidentally damaging the components.

Especially for vacuum equipment, you are most afraid of scratching the sealing ring during installation.

A slight scratch on the copper sealing ring may affect the vacuuming effect.

But with Li Yuan's cooperation, these parts can be firmly moved into the appropriate position without any damage to the sealing ring.

As the installation progressed, Li Yuan's strong learning ability came into play. Li Yuan could complete many installation tasks independently.

Compared to Li Yuan, Master Xiao only has many years of experience.

When meeting the studious Li Yuan, Master Xiao did not hide his secrets and explained in detail what needed to be paid attention to during the installation.

In a few years, he will retire. If he has some incense left behind now, he may still be able to get some glory in the future.

They have all been in the industry for many years. When they first came to work, they already knew who was the big one here.

Time passed quickly, and three days later, except for the hydrogen reactor, there was a lack of parts.

Both vacuum furnaces are fully installed.

Taking advantage of the inconvenience for everyone to enter, Li Yuan used the space to sweep around the workshop while cleaning with a homemade vacuum cleaner.

He also secretly placed the "small fan" in a hidden part of the vacuum furnace to purify the air.

Because supplies now need to be transported frequently, despite strict dust removal, residual dust and debris will still be left behind.

Therefore, at this stage, Li Yuan would hide "small fans" in various rooms at night.

Therefore, although the conditions of the dust-free workshop are limited and the dust removal function is relatively simple, with the small fan, the local space is much better than that of later generations.

The week of preparation went by quickly.

Today, Monday, is the day to start the vacuum furnace for the first time.

Everyone in the laboratory stood in the hall, looking at the laboratory through the glass.

Li Yuan stood in front of the vacuum furnace, and Master Xiao stayed in the vacuum equipment room.

After the two checked separately, they gestured to each other to confirm.

Li Yuan pressed the switch nervously.

The hum of the blower can be heard through the glass.

Master Xiao nervously observed the operation of all blowers, heating chambers, and separation pumps.

After a few minutes, everything is fine.

He made a gesture to Li Yuan, who had been paying attention here.

Li Yuan finally let go of the stone in his heart.

After almost 40 minutes, the vacuum pressure gauge reached the negative third power, and Li Yuan stopped working on the heating chamber.

Hold the watch in your hand and pay attention to the vacuum degree. When the vacuum degree drops to one power.

Start heating again.

Repeating this, he obtained the time interval to maintain the vacuum, which was 45 seconds.

There is no way, now all operations are manual.

When wafer production began, he immediately manufactured special chips.

Maybe you will ask why not directly manufacture the CPU.

This is a system project that requires defining an instruction set and designing a chip based on the instruction set.

It requires supporting design software and a general-purpose high-performance computer.

None of these currently exist, so only integrated chips with dedicated functions can be produced.

The world's first commercial microprocessor should be Intel 4004, launched in 1971.

The size is 3cmx4cm, there are 16 pins on the outer layer, and 2250 transistors are integrated into the chip.

The distance between transistors is 10 microns, it can process 4-bit data, operate 6 times per second, and the frequency is 108KHZ.

It was originally designed and manufactured specifically for a Japanese company called Busi and used in the company's calculator products.

The 86, the originator of X8086, was launched on the market in 1978.

Therefore, all integrated chips before 78 were special-purpose chips and basically did not have programming capabilities.

Therefore, Li Yuan's secret laboratory starts from the basics, starting from basic transistors.

And it must produce benefits so that the country is willing to continue investing money in the future.

Otherwise, the future of this laboratory will be in doubt.

There are two ways to generate benefits.

The first is to directly provide drawings and technical support to other factories.

The products from these factories are competitive and then monetized.

It means that the laboratory indirectly contributes to the national economic construction.

The second is to sell high-purity wafers to facilitate technical research by major research institutions.

The last one is best hidden and can be claimed to be purchased from abroad at a high price.

Because in the short term, China is not yet capable of producing high-purity wafers.

The main reason is that they don't have Li Yuan's unique "little fan".