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Xiangjiang, East Asia Building, Li Office.

Li Yiming frowned and looked at the door, but he couldn't see the two people, but he knew that Wang Ji had already sat on the toilet.

It's not surprising that people are old and nervous, but Zeng Wei obviously wanted to pee but endured at the door, and he didn't know what this was, for fear that going to the toilet together would make the leader unhappy?

Such a waste of time made Li Yiming dislike it very much.

"Since it's so important..."Li Jianguo looked at the opener again: "Can't we make this thing ourselves?"

"It can be made, but at the same time it is necessary to buy a part, many electrical appliances in this industry have similar products, tape in fact, this industry will live for another ten years, and then it will not be it, but now we need broadcasting, and we need it in counties and villages." Li Yiming thought for a while, "The radio station is very convenient. ”

"It's true, after all, you have to watch TV in front of you, and it is more convenient to broadcast. Li Jianguo nodded, if he wants to carry out education for all according to his son's idea, the cost of listening to the radio will definitely be much lower than that of television.

"The cost is also low, it is faster to match, after all, the TV is still expensive, the radio is much cheaper, and you can only use the battery, it is very convenient in the mountainous area, and you can provide a sufficient amount of battery. The battery has to be rechargeable, so that the place where the condition is too poor can be directly recycled and recharged, and the better condition can be charged at home. ”

"Charged batteries... Do we have this technology?" Li Jianguo asked, now it seems that they are all using the kind of white elephant batteries that are useless when they are used up and will become mushy after a long time.

"I don't know, even if you don't have it, you can study it, but it's not too complicated to make some experiments on positive and negative electrode materials, nickel-cadmium batteries are polluting, and you can directly develop nickel-metal hydride batteries, and lithium batteries should also be done. In addition, you can make some miniature vibration generators......"

"What is a vibration generator?"

"It's a small generator made of piezoelectric materials, and the amount of electricity generated is very small, but it should be enough for light-emitting diodes to be used for outdoor lighting at night. ”

"What is a piezoelectric material?"

"It is under pressure to generate electricity, and the flint of this imported electric lighter is piezoelectric ceramics. Li Yiming pointed to the bag, "There are a few in the bag, but there are many kinds of piezoelectric materials, you have to choose a better one, otherwise the voltage is too low, the diode can't be lit, like quartz." ”

Li Jianguo half-opened his mouth and sighed, he didn't know what kind of piezoelectric material the lighter flint was: "There is this in the physics book?"

"Physics textbooks talk about static electricity, like glass is easy to produce static electricity, glass is actually the same as quartz, but the crystal structure is different, so the charge will float on the surface, quartz will guide the two ends, can be ignited millions of times can not be the kind of flint and steel that relies on friction, it must be"

"Hydropower station charging stations, batteries, electrical appliances, and standard courses, the set of hardware for education for all is basically complete!"

Hardware!

Li Jianguo silently remembered: "What are the electrical appliances?"

Li Yiming looked at his father: "Well, telephone, radio, television, paging and computers, these are all basic communication configurations."

But hardware alone is not enough, someone needs to be able to operate, and now the literacy rate is very low, many people can't even understand Mandarin, and it is even necessary to convert Mandarin into dialects before broadcasting.

Who's going to do that, who's going to use the equipment,...... These people need to be trained, just like in the universities now, the vast majority of people have no talent for research, they have to learn how to pass on this knowledge, and be a good messenger!"

Li Jianguo's eyes were puzzled: It sounds like going to the mountains and going to the countryside again.

Seeing his father's thoughts, Li Yiming patiently explained: "What I want now is for them to return to their hometowns to build their homes, which is still different."

The role of grassroots technicians is very large, especially when the state gives support, they can play a role, and they do not embarrass them, and it is also arranged by the state. When you go back to your hometown, your hometown has its own construction plan, and you don't have to stay in the city. ”

Li Yiming looked at his father and sighed slightly: "You didn't have enough knowledge at that time, and you didn't have these things, otherwise you should have received sufficient training in school before going to the countryside." ”

"Actually, there is...... However, it is mainly in the area of ideological education. ”

Li Yiming shook his head: "This is not enough. ”

"Actually, we went to the countryside to receive re-education, and now you're the other way around. Li Jianguo looked at his son, "Are they messengers?"

Li Yiming shook his head: "It's not a teacher, they just pass on these contents, what they need is accuracy, and at the same time, they also have to feedback the problems at the grassroots level through the network, and we will concentrate on solving them." ”

"Oh......" Li Jianguo pinched his chin, trying to imagine the process.

"Then, you don't have to study for four years in college, according to the level of skill mastery, you can go back to your hometown to engage in construction and get your salary early. ”

"And what if it's in the city?"

"To aid construction, I have to arrange to go to the village every year and be a village assistant. ”

"The kind of assistant that Addison... In the village..."Li Jianguo thought for a moment, but he could really do something different.

"The entire education system has to be adjusted, technology has progressed, the model has to change, a country's power is definitely much stronger than an individual, and in doing so, the loss of resources is also minimal!" Li Yiming looked at his father, "These are very important to the country and to the individual!"

Li Jianguo took a deep breath, nodded, and inexplicably thought of the sentence "The past, the number of romantic characters still look at the present", if there were these back then, the motherland should have been a different appearance.

"Look ,......"

Li Yiming motioned to Li Jianguo to look at the big cake: "That is twelve inches, it's inches." Don't look at it so big, it's actually the content of a tape, but the recording effect is better. ”

"You bought them because they were cheap?"

"Cheap is one thing," Li Yiming looked at the opening machine, "There are also these two circuits and mechanical parts that can be used together, and people can also transform them themselves." ”

"Transformation?"

"Well, it has how to change it in the technical manual, and if you lower the tape speed, you can listen to the tape recorded at low speed. ”

Li Jianguo's head was big for a while.

Li Yiming looked at his father and took the initiative to explain: "If you use its normal speed to slow down the tape recorded at a fast speed, the effect is equivalent to fast playback, and slow songs are listened to as fast songs." ”

"Understood!" Li Jianguo looked closer, "This one is changed." ”

"No, you have to change it yourself. Li Yiming pointed to the three-purpose machine, "This can only be used for ordinary tapes." ”

"No wonder! So what to do next?" Li Jianguo picked up the big cake and looked at it, "This one is so wide, how can it be so thin." ”

"To transcribe, copy a working master tape and hand it over to the tape factory, which is generally 15 times faster, and the tape factory first transcribes 1/4 of the working master tape to the 1/2 four-track machine to record the 3.75 speed working master. ”

“...... Got taper?"

"It's not thinning, it's just that the data is lost. Then put the 3.75 master tape on the master tape solo player, and the single master tape machine dragged dozens of high-speed repeater recorders to record a large tray of cassette tape.

After recording, the cake belt is taken to the QC machine to listen to it, it is said that you don't need to listen to the whole plate, only listen to the tail of each plate, because the back is fine, and the front is naturally good. ”

"Isn't it okay to lose sound quality?"

"The average person can't hear it. Li Yiming picked up the tape and looked at Li Jianguo, "In fact, this thing is equivalent to that repeater, which is equivalent to a photocopier, and the core technology is in the tape and the magnetic head, but we can already do it." ”

"If you can do it yourself. ”

"The cost is lower here. ”

"Really?"

Li Yiming nodded: "The people in the record factory said so, the mainland is now mainly producing this in the three tape factories in Dalian, Shanghai, and Xi'an, which should also be in short supply." These are mainly exports, direct production is good. Xiangjiang is also a duty-free port, and import and export duties are also saved. ”

"As soon as you say that, I remember, the business of the tape factory is indeed good, the salary is also high, and everyone wears white coats like doctors. I heard that there are cars waiting to pull goods at the entrance of those tape factories now, and they can be discharged for several miles. Li Jianguo also said.

"Yes, there are requirements for cleanliness in the process, otherwise the tape will fall into dust and affect the quality of the recording. If there is no problem with the cake tape, it will be installed on the tape cutting machine, and the cassette cut into a tray can be installed and shipped out of the factory. ”

"It's so simple?" Li Jianguo was a little fascinated, he knew how expensive these things were sold in the store.

"Yes, it's easy to have a machine. ”