Villager of Daming

Chapter 851 It’s hard to cross the river when listening to the lecture for the first time

The magnet telephone made in the village has a battery inside. The power of the battery provides sound transmission, and the hand crank emits alternating current. People use this to connect to the manual switchboard.

The person at the manual switchboard is equivalent to a microphone builder. One person shakes the phone and sees that the sign has fallen, so he answers the phone and asks the other party where he wants it? The other party asked where he wanted, and connected the other phone's plug to this one. The phone on the other side rang, and the two parties connected.

Since there is no filter, it is impossible to build a carrier device, so a telephone line can only connect one phone.

For example, the manual clearinghouse is X, and the telephones at other different locations are ABCDEFG. Each of the seven locations must be connected to

If A and B are on the phone, and C wants to find A or B, it won't work, unless C has greater authority, then C finds X, and X helps connected AB, turns around and disconnects AB's communication, connecting C A or B.

Who has the greatest authority depends on who has a high status and whose matter is serious. Zhu Yuanzhang guarantees that he will have the first priority. However, if there is a mutiny in the military camp and there is a call, priority will be given to the military camp line.

But the magnet telephone has a shortcoming. The distance is too long. When transmitting from one Xiaqiu village to another Xiaqiu village, the electricity is not enough.

Then the power supply can be provided at the manual exchange, and this power supply can provide signal carrying channels for multiple telephone lines.

In other words, the phone line is always powered and can be called at any time.

Zhu Wentian tried the magnet first, waiting for everyone to get used to it, and then installed the phone line over there, and then replaced it with the common power one.

The village can still provide electricity, but when the phone lines are set up they look like spider webs.

"Let's do this with the phone first. We'll get the telegraph machine later. We're going on a long trip and need to keep in touch with this place at any time. Wireless telegraphy is not very technical and doesn't require diodes."

Zhu Wentian was very satisfied with the phone. The next step was to take out the telegram before leaving. The one could not be communicated, and the other required higher technology to build a radio station.

Normal telegrams use Morse code. According to the rules, numbers are used instead. Four numbers represent a Chinese character. You can look it up while holding a book. No encryption is required.

When we have the telegraph, why should we light the beacon? When you see the enemy, send a telegram, then get on the hot air balloon and run away, and continue sending the telegram from the hot air balloon.

"Let the village make artificial parts! Some simple ones, such as shells, are sent to the industrial zone.

We don’t use dry batteries in our village. We can just use lead-acid batteries, which have more electricity and can be recharged. Dry batteries are expensive.

Chemical batteries are used once and can only be dismantled. It is troublesome to choose a still usable one to continue making batteries. "

The little girl thought that plugging dry batteries into the phone would be better than plugging in a storage battery because the voltage could be adjusted.

"First build a few for everyone to play with, and then share the power. You need to connect two more transmission lines to avoid problems with one generator." Zhu Wentian thought about it, and the battery was not as good as the shared power.

When I come back from this trip, I will rebuild diodes and other electronic parts. With the carrier, I can add several more phones to one wire.

Of course, when laying electric wires to another Xiaqiu village, several iron wires were also installed together.

Tell the people not to knock down the telephone poles and steal the phone lines. It is useful and of great use to the court.

And when you see someone doing damage, report it and give him a reward.

……

At noon, people bathing in hot springs went to rinse with ordinary water. The hot springs contain high mineral content. Except for bubble hot springs, other hot springs are not suitable for drinking.

Zhu Yuanzhang felt refreshed, changed into casual clothes, and sat upstairs again, where people were already buying spicy rice noodles.

The ministers arrived first and greeted him, the queen, the prince and others.

He saw something extra on the table and looked at it: "Yichang, is it for eating?"

"Your Majesty, the phone is used to deliver messages. You can use the phone to speak. You can speak directly. The other one is downstairs. You can send someone down to listen."

The director doesn’t want to introduce it too much, just give it a try and you’ll know.

"I'm going." Queen Ma was afraid that others would lie, so she wanted to verify it herself.

Queen Ma went downstairs, and Zhu Yuanzhang shook the phone under the guidance of the head of the house. A voice came from inside: "This is a manual exchange. Who are you looking for on the [-]st?"

"Is it Ling'er? Let's look for Queen Ma. She's downstairs." Zhu Yuanzhang heard the noise and thought it was interesting. He didn't see the little girl. "Wait a moment, I'll transfer it for you." The little girl over there said, inserting the number [-]'s, connecting the two parties, and sending a signal to the number [-] at the same time.

When the phone in front of Queen Ma rang, she picked it up at the signal of others: "Can this one talk?"

"Sister, it's us, are you serious?" Zhu Yuanzhang heard it again.

"It's me, Chongba, are you upstairs?"

"Yes, I'm upstairs, and you are downstairs?"

"I just came down, what are you going to eat today?"

"Let's drink mutton soup! Or the garlic pie from the morning."

"I'll go up right away and let's face each other."

"it is good!"

After a while, Queen Ma came up and the two of them repeated it in person.

"Oops! Biao'er, you go down, wait a minute, we write something, you go down and read it for us."

Zhu Yuanzhang was surprised and did not want to torment his sister to let his son go downstairs.

There are four treasures of the study upstairs, as well as pencils. Zhu Yuanzhang simply wrote a sentence with the pencil, folded it after writing, and handed it to Zhu Biao.

Zhu Biao ran down and picked it up before the call was disconnected: "Father, father, are you listening?"

"Listen! Read!"

"If you don't replenish yang during the Qingming Festival, the doctor will have his heart broken. Father!"

"It's done! Come on up! Who made the good stuff? Call us? If we want to eat anything from now on, just call the village and they will deliver it to us."

Zhu Yuanzhang's eyes were bright, and he thought of a use.

The ministers: "..."

When they were equally shocked, they found it difficult to agree with the use of such magical means to order food.

Zhu Biao ran up and handed the note back to his father: "Father, you can really hear it."

"Yichang, isn't this upstairs and downstairs?" Zhu Yuanzhang considered the distance issue, so he just shouted upstairs and downstairs.

"Your Majesty, it can be far or near. The current one is more than thirty miles away. There will be one farther away in the future, and it will be there soon."

The headmaster nodded. It’s not about going upstairs or downstairs. It’s okay to talk to people downstairs with lights and telephones!

"How did you do it? How can you talk when you are far away?" Zhu Yuanzhang saw him for the first time, and he had a lot of confusion in his heart.

“It’s just like wires. Wherever the wires are laid, this can be connected. You need wires.

The village plans to set up electric wires to the village over there, and then connect them to Ningguo Mansion and Taiping Mansion to facilitate communication with the government offices.

Ma'anshan's iron mine, with this, you can always know the situation, industrial areas, factory areas, military camps, etc.

The principle is this..."

The chief repeated the knowledge he had learned to everyone, and he himself thought it was good and convenient to use.

Zhu Yuanzhang nodded repeatedly, waited for the mayor to finish speaking, and then said: "Who should we call to see us, just use this? After dinner, we quickly went to set up the wire for us. The nearby state capitals are all wired. Crossing the Yangtze River... we can't do it first." "

(End of this chapter)