In fact, in 1969, Longguo had the first "digital program control line cutting machine", discrete components, more than 40 printing boards, digital tubes and neon lamp displays,

In the 1970s, Changzhou Machinery Factory hand-made CNC electric spark wire cutting machine tools equipped with 70 stepper motors, double V steel ball guide rails, screws and guide rails, F-shaped wire frames, and stroke switch reversing,

This structure is very excellent and is also a major achievement in machinery at that time. Now many machine tools produced by small factories are still using this structure.

In 1977, after Longguo imported a lot of z80,8086 microcontrollers, Changfeng microcontroller CNC machine tools at Suzhou Radio Plant began to be launched in large quantities.

Therefore, by 1981, my country's CNC was not only not poor but also had more than ten years of history in the principles of CNC, and each generation also had flagship products.

But several engineers who studied electric motors were embarrassed and scratched their heads and said, "Engineer Li, we are not very good at this, why don't you come and have a look."

This is also a common problem in undergraduate mechanical studies, which is that you know a little about everything and don’t know anything.

Those who know mechanical but don’t know programming, and those who know programming don’t understand microelectronics.

These three fields can be studied for a lifetime,

If you want to get through the three at the undergraduate level, it is absolutely impossible for Zhuge Liang to rebirth.

For this reason, the technician who studied motors and motors had been exploring for a month and broke the microcontroller manual, but it still did not make any progress. It was just a blame for his own good quality.

Li Sanbiao heard that the micro motor parts produced by CNC machine tools were not accurate enough, and he suddenly felt it was very strange.

Li Sanbiao said: "Take me to see the machine tool, maybe we didn't use it well."

The CNC machine tool of the 772 Institute is imported from Dongyang, which is better than Changfeng. It uses an 80C51 microcontroller.

A microcontroller, also known as a microcontroller, is to concentrate CPU, memory and other functions on a board and install it directly on a CNC machine tool, not an independent computer.

This CNC machine tool has not yet had an LED display, but it has an input device similar to a calculator keyboard to enter operation commands.

Although it is a blind editor, it is already very advanced than the input method with a clock card.

At present, this configuration is already at the world's advanced level, and it is impossible to not be able to process a hard disk motor!

Have you confirmed this? Li Sanbiao began to analyze.

Ding! The analysis is completed!

After comparison with the same model assembler compiler, the compiler of the CNC machine tool has all the numerical accuracy locked in one place! For the last digit, the chip will not be translated, and will instead generate random numbers...

Li Sanbiao cursed, these foreigners are too dark, and I entered mobile 2.444. The actual machine tool gave it very likely 2.441 or 2.449!

Li Sanbiao immediately asked, "Is there any way to unlock it?"

If it is another domestic manufacturer, even if you know that the function is locked, it will not be able to unlock it because there is no original assembly compiler.

Even if the program is used, I don’t have the courage to disassemble the machine and rewrite the packaged board.

But what does 772 do? When Li Sanbiao said that, several engineers were immediately angry and rushed forward, took off the CPU that stored the compiler, and put it into the chip programmer. It can burn the compiled programs.

Go to CPU.

The third uncle quickly gave an original assembler compiler program. Li Sanbiao inputted it into the CPU, and then asked the engineer to install it back and finely re-weld the solder joints.

Engineers who operate the machine tool slowly input data instructions through the buttons,

This time everyone was surprised to find that the machine tool movements have become accurate this time, without any error!

Everyone was surprised and cursed: "Damn it, I'm trying to mess with us for so long, it turns out that I'm cheating us!"

"That's right, even though we are making trouble, we still say that our operators are not good at it!"

Li Sanbiao said: "Now, wait for our CPU to be launched, and we will never need anyone else's! We will never get cheated again in the future!"

It took two weeks for the hard drive research team to successfully create a hard drive with a capacity of 500 megabytes.

Li Sanbiao knew that the 286 computers launched in 1988 had only 20 megabits of high-end hard drives, and he had already achieved 500 megabits, which had reached a hard drive capacity of 486!

Li Sanbiao said: "Let's not tell people first that the hard drive is so big. You can divide a partition into 10 megabytes, and hide the remaining partitions first!"

The working group was very confused and said, "Why is this?"

Li Sanbiao smiled and said, "If we make it too big, beautiful will definitely send someone to trap our information. If we succeed, we will have no advantage. We have to wait for their next generation of hard drives to be launched first, and then announce that we

The hard disk can be adjusted, and the capacity is 20 times that of theirs!"

Everyone was stunned. What kind of thinking is this? Isn't it good?

Li Sanbiao smiled and said, "You will understand then. Just do what I said, and I guarantee you will be surprised at that time!"

This kind of hard disk needs mass production. It is not enough to have a high-end CNC machine tool alone. A batch of just-built domestic CNC machine tools must be renovated.

Changfeng microcontroller CNC machine tools are a suitable target for transformation, and now you have five units in your hand.

After rewriting the program, the accuracy is greatly improved and some ordinary high-precision parts can be processed, but it is still not enough for micro motors.

Li Sanbiao made arrangements, except for the most precise components, using foreign machine tools, the rest were made from domestic ones.

But he was still a little depressed. The reason why domestic CNC machine tools are not enough is that they are not professional!

Most CNC machine tools are produced by some local radio plants, and they are barely able to do CNC, but they can only cooperate with local second-rate manufacturers in terms of machinery, and the product quality is naturally not high.

This can only be done first, Li Sanbiao plans to go back to Sijiu City.

After creating the hard disk, the CPU and other aspects also made a smooth progress and the design drawings were completed.

However, there were difficulties in manufacturing.

The goal of the Institute 772 is to be able to use domestic production to make chips and bottom plates,

However, Luo Jianfu, who is responsible for mask plate making technology, insisted that national equipment must be used this time,

That is to realize the domestic production of CPU production tools.

Chen Tianhui pulled Li Sanbiao aside and whispered: "Xiao Li, understand. Xiao Luo hasn't had a rest for several years in order to develop a graphics generator. Last year, he found out that cancer was found, but he was still working and said he wanted to live. Develop the third generation of graphics generators.”

Li Sanbiao was silent. Lao Luo completed the drawings of the third generation of graphics generators under the torture of the disease.

Graphic generators are important components of electron beam exposure machines. They are mainly used to make plates and engrave mask circuit diagrams!

Lithography is woodblock printing, so the plate-making machine is an electron beam exposure machine, the key equipment for controlling the woodblock knife is a graphics generator!

It is located between a computer and a high-precision deflection amplifier. Its main function is to process the unit graphics data sent by the computer,

The hardware units in the graphics generator generate the X and Y coordinate values ​​of each point to be exposed in turn.
Chapter completed!