Chapter 89 It's so beautiful

ps: There was something wrong with the previous update. Sorry. Chapter 91 will be released tonight.

During World War II, the bomb-drop calculation device on American aircraft used a mechanical computer. Not only was the computing speed very slow, but it was also driven by a gear. A large box full of gears was very bulky, and the function was simple and very simple. It was only equivalent to the calculator of this period, but at that time, it was already Always advanced scientific and technological achievements.

The aircraft will vibrate violently when flying, and the mechanical computer is driven by gears, so at the beginning, everyone is very worried that the vibration of the aircraft will eventually have a bad impact on the calculation results, resulting in an increase in the calculation error. However, the final test data surprised people. They found that after the mechanical computer got on the plane, the accuracy of the calculated results was better than that on the ground.

What is the reason for this?

After research, experts finally found that the original vibration factor not only did not have a bad impact on the mechanical computer, but would increase the accuracy of the computer results.

The calculation accuracy of the mechanical computer is limited, only integers can be calculated, and the decimal point can only be rounded.

For example, if the result of an operation is 4.4, then the result is 4 after processing. If the results of five consecutive calculations are multiplied, then the correct result should be the fifth power of 4.4 1649.16224, but the calculation result of the mechanical computer is the fifth power of 4, only 1024, which is very different, and the more these errors are superimposed, the greater the error.

However, due to the vibration, there is a slight error in the operation of the mechanical gear. In the end, the result of 4.4 may eventually become 4.5 or 5, which changes the result. Of course, it may also become 4.3, which is no different from the original result.

Assuming that due to the vibration error, two results have become 4.5 and 4.6 respectively, and the others remain unchanged, then the final result is 5*5*4*4*4, which is equal to 1600. This result is obviously closer to the accurate value than the original calculation result.

In these machines, the large error of the computer is rounded by adding some small errors of random shaking, which is called jitter technology by scientists, which is a wonderful idea to "attack poison with poison".

After hearing Lin Hong's explanation, Cook realized that the principle of "jitter technology" was also used in Lin Hong's seemingly simple circuit, so as to obtain a better filtering effect.

Next, Lin Hong tried his best to explain the other part of the circuit to Cook. It was not until he finally nodded that he picked up the teacup on the table and took a sip of tea to moisten his throat. He didn't expect these things that he thought were very easy to figure out, and Cook couldn't figure it out all the time.

After listening to Lin Hong's explanation, Cook sat there in a stun, imagining what kind of result would be produced by such a combination of these circuits. For a while, he suddenly shook his head and denied it, as if he had entered a magic barrier.

After a long time, he gradually began to understand, and words such as "Impossible", "Unbelievable", "Genius" and so on were constantly coming out.

This design is completely beyond his acceptable understanding.

Lin Hong does not know the technical level of signal filtering of electronic engineers in the world, but Cook knows quite well. As a ham, he is naturally very concerned about these cutting-edge technologies.

It's just that Cook never thought that he would meet a genius in the field of electronics in China and solve this problem that is a headache for hams all over the world.

Cook did not doubt that the design was not completed by Lin Hong. The explanation just now has explained everything. Lin Hong's understanding of this circuit is handy, and he can also tell the source of the design concept. If it is not the original designer, he can't do this at all.

Feng Wan has been looking at her son's communication, arguments and questions with Cook with a smile on her face. This is her son, who can make Cook so lost his temper. At this moment, she only feels a strong sense of pride as a mother.

Xu Wenjing looked at Lin Hong with a surprised face. She didn't expect that his radio knowledge was so profound that he seemed to be much more powerful than Mr. Cook's. He really not good-looking. He is younger than himself, isn't he?

Xu Wenjing remembered the sentence "serious men are the cutest" that I don't know who said. At this moment, the two people in front of her are so cute.

Xu Wenjing saw that when Lin Hong drew a circuit diagram and handed it to Cook, Cook's face immediately looked like a chameleon, constantly changing color. From the beginning of pride, it gradually began to change into doubt, strangeness, surprise, shock, unbelievable...

"[English] God! This...this is a wonderful design, it's incredible!" Cook stood up with the piece of paper in his hand in his hand, as if looking at a treasure. "STONE, can this circuit really work?"

Cook saw the mystery, but he was still not sure whether the circuit could really work.

He looked at Lin Hong expectantly, afraid that Lin Hong would shake his head and make a negative look.

Lin Hong smiled and said, "Of course. I have made it myself, and the effect is very good.

"What? And the finished product?" Cook was excited. He took Lin Hong's hand and said, "Where is it? Can you show me?"

Lin Hong was stunned. He didn't expect Cook to be so excited.

"Uh... I didn't take it with me at home."

Although Cook can't wait, there is nothing he can do. It's not on Lin Hong.

He adjusted his mood and said to everyone, "I'm very sorry. It's really rude. I'm really excited."

"We can understand your mood. Don't care." Feng Wan nodded with great understanding.

"Hey, this is really good news." Cook sat back to his seat, picked up the circuit diagram in his hand and looked at it again. "STONE, you know, this is a very great invention. Once the product is made, it is simply the gospel of the hams!"

Cook is excited again at this moment.

"Yes, STONE, have you applied for a patent for this product?"

"Patent? What is it?" Lin Hong didn't understand at all.

Feng Wan also heard that the name was coming at this moment. She first explained the concept of patent to Lin Hong, and then asked:

"Mr. Cook, are you sure this can be patented?"

"Why not?" Cook was very surprised, "In the United States, even ideas can be patented. STONE, IT SEEMS THAT YOU HAVE IGNORE THIS LINK. I SUGGEST THAT YOU APPLY FOR A PATENT IMMEDIATELY AND LET THIS PRODUCT BE LAUNCHED AS SOON AS POSSIBLE. I THINK HAMS ALL OVER THE WORLD WILL COME TO BUY YOUR PRODUCTS. DON'T YOU KNOW THAT ALL THE HAMS HAVE BEEN LOOKING FOR SUCH A THING? It's so simple. It's so beautiful!"

Cook looked at the drawing in his hand and praised again.

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