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"If only I could have a computer......

This is what Liu Fang said the most today, when doing business, as long as he has free time, he will look through this computer textbook, and the more he looks at it, the more interested he is in computers. Pen "Fun" Pavilion www.biquge.info

After returning home in the evening, Liu Fang did not cook as usual, but sat on the shore of the lake and carefully read the computer textbook.

Unconsciously, the afterglow of the sunset was swallowed up by the night, Liu Fang put away the teaching materials, his eyes fixed on the lake, and his eyes looked a little hollow.

After a long time, Liu Fang said to himself: "Although computers are very expensive, as long as I work hard to make money, I may not be able to afford them, well, I decided so!" ”

The next morning, when Liu put in the goods, he expanded the scope of the merchandise to include two cases of cold beer, in addition to snacks such as melon seeds and peanuts.

At twelve o'clock at noon, Liu Fang rushed to the gate of the construction site on a tricycle after closing the stall from the school.

Liu Fang seized the opportunity to shout: "Cold beer-melon seeds and peanuts-"

The workers were doing manual work, and as soon as they heard that there was a cold beer, they paid for it, and by the way, they also bought peanuts for drinking. As a result, at noon that day, Liu Fang earned three times more money than usual.

At half past five in the afternoon, Liu Fang still repeated his old tricks, and after a whole day, he earned about the same amount of money as the workers' wages in a day.

Liu Fang knew that this kind of day could not last forever, because what he sold was seasonal, and when it was winter, where would he go to sell cold beer? Not to mention popsicle soda, who buys it on such a cold day?

Liu Fang has long been aware of this problem, and within a few days, Liu Fang has determined a new money-making plan, if this plan is known, everyone will definitely laugh off their big teeth, because Liu Fang's new plan is to engage in scientific research and development, and then make money by selling technology.

In the eyes of ordinary people, only those high-level intellectuals can do this, Liu Fang is not in his early tens, and he has not even graduated from primary school.

"Due to the lack of relevant equipment, I can't carry out too complex scientific research, but it is still possible to make it simpler, and I still need to think about it in detail where to start."

After Liu Fang finished dinner, he sat by the lake and thought about it, and after thinking about it for a while, Liu Fang determined a general range: "It's best to have something to do with radio technology, because I'm more familiar with this." ”

Liu Fang really knows a lot about radio technology, he hasn't done anything else in the past few years, and he is all dealing with radio.

After he finished speaking, he walked into the inner room, there were several radio equipment in it, Liu Fang was busy with business during this time, and he was a little disheartened after the dissolution of the association, so he never touched these equipment again.

Facing these radio devices again at this moment, Liu Fang couldn't help but sigh, then took out his tools and began to get busy.

When Liu Fang was communicating radio technology with Sam and others, he once disassembled a piece of equipment by himself, and did detailed research and understanding of the structure of the radio equipment.

He was so skillful at disassembling the radio that in less than five minutes he had broken it down into parts, and then his eyes were swirling around the parts, as if looking for a target.

As a result, after watching it for a while, Liu Fang didn't make up his mind, because he was a little reluctant.

Engaging in scientific research and development must require relevant tools and raw materials, tools can only be bought, as for raw materials, Liu Fang can only make ideas from these parts.

In Liu Fang's eyes, these radio equipment are all his treasures, and if the parts are accidentally damaged in the process of scientific research and development, the loss will be too great.

"This one is expensive and complicated, so it's not very suitable...... It's the same with this one...... This won't work either......"

Liu Fang muttered quietly, and after a long time of selection and hesitation, he finally gritted his teeth and picked up the electromagnetic coil.

"The technical content of the electromagnetic coil is not very high, because of this, it has room for technical improvement, and its price is not too expensive, even if it is damaged by me, the loss will not be too big, well, let's start with it."

The working principle of the solenoid coil is very simple, that is, the metal coil is provided with magnetic force through electric current, and then the magnetic force can be used for signal transmission. The coil on it is generally wound in a spiral shape, because this can increase the electromagnetic force field, so that the signal can be transmitted with more power and stability. This item has a very wide range of applications, as long as it is an electronic device.

Liu Fang carefully observed the electromagnetic coil, and soon found the direction of research, "The electromagnetic coil is so bloated, there are so many copper wires wound on it, if I can find a way to reduce the use of copper wire, this alone will save how much money I can save." ”

In order to increase the power of the solenoid coil, the most common way is to increase the volume of the coil, the larger the volume, the greater the power of the coil.

Liu Fang feels that this is a breakthrough, because the scope of application of this product is too wide, as long as he can reduce the production materials, the annual savings alone are an astronomical amount!

If ordinary people learn about this, they will probably be ridiculed like this: "Pull down you, so many electromagnetic coil manufacturers in the world, people must have considered this problem, since no one has proposed to improve the technology for so many years, what are you coaxing a little kid?" ”

In Liu Fang's view, what others can't do, he can't necessarily do, he is very confident in himself, if he doesn't try, he won't be reconciled.

With self-confidence and a desire for computers, Liu Fang immediately started research on electromagnetic coils.

The next day, Liu Fang went to buy some simple experimental equipment in the interval of doing business, such as electric test pens, multimeters, telescopic rulers and other tools, he would study electromagnetic coils every day when he came home, and from time to time he would take out a pen and paper to record his thoughts, and in his free time during the day to do business, he would study the computer textbook.

With the passage of time, Liu Fang has a relatively in-depth understanding of the basic knowledge of computers, and at the same time has some very special ideas, but he is unable to carry out practical operations because he does not have a computer.

At noon that day, when Liu Fang was selling beer at the gate of the construction site, he was suddenly tapped on the shoulder. Liu Fang was relatively thin and weak, and was almost slapped to the ground by the other party from the tricycle.