Chapter 368 The reason why I have been using it

After breakfast, Yingzheng and his group went to find Qin An again. And Qin An went out early in the morning, and they pounced again.

Ying Zheng frowned slightly and said, "What is this Qin An doing again?" ”

Jiang Lu immediately said: "I'll go to him now." ”

Ying Zheng nodded.

Jiang Lu immediately left the courtyard.

Ying Zheng looked at the empty courtyard, and could only enter Qin An's study again and sit in the courtyard with Qin An's books to read.

Li Si and Feng Quji could only stand aside and wait for Qin An.

After waiting for a while, Li Si spoke: "Village Chief, it's better to go to the Mo family and the people of the public loser now, learn about the advantages and disadvantages of the transmitter and the telephone, and ask about them by the way." ”

Ying Zheng nodded and said, "It's okay." ”

Immediately, Li Si arranged for two Black Dragon Guards to find the Mo family and the loser's people.

Looking for Qin An, you need to find Lu. But the people of the Mo family and the public loser, they only need the Black Dragon Guard to find it.

The most important thing is that Qin An is not easy to find, but it is easy to find people from the public loser and the Mo family.

Sure enough, the people of the Mo family and the public loser took the lead in coming to the courtyard.

"See the village chief."

Ying Zheng nodded and said, "No need to be polite, you can tell me directly, what is the difference between the telephone and the telegraph." Is it possible to replace the telegraph with a telephone? ”

The children of the Mo family were the first to reply: "Back to the village chief, Mr. said that although the telegraph appeared earlier than the telephone, and even the telephone was popular all over the world, the telegraph was still not cut off. ”

"Do you know why?" Ying Zheng asked.

"The gentleman didn't say, he said that it wasn't something we were going to care about, that our task was to learn the theory, and then to constantly update the telephone, the telegraph.

However, according to his thoughts, he does not seem to have much hope for this, and always says that these will be eliminated in two years.

When the time comes, buy us mobile phones and computers, so that we can get in touch with more knowledge. The Mo family disciple said again.

Ying Zheng nodded slightly, and said, "Since you don't know much, then go back, next time you have such an opportunity, you can ask Qin An directly." ”

"No."

After the children of the Gong Loser Family and the disciples of the Mo Family left, Li Si spoke again: "Village Chief, it seems that Qin An still hasn't given up until now. ”

Ying Zheng nodded and said: "After two years, he will naturally die, and the top priority is about the advantages and disadvantages of telegraphs and telephones."

As you have just heard, even though the telephone has become popular all over the world, the telegraph still exists.

So this incident can only tell us that this telegraph may no longer be popular among the people, since this is the case, then it can only show that the country is still using the telegraph, but why does the country use it?

And where is it used? I can't figure this out, where do you think it will be used? ”

"Village Chief, do you think it will be used in the army?" Feng Qujian said.

"The army?" Ying Zheng and Li Si both frowned slightly.

Such a thing, which needs to be connected by wires, how can it be used in the military?

Just when everyone was speculating, Qin An came back, and Jiang Lu came back with Qin An, and the two came back talking and laughing.

"Father-in-law, father-in-law." Qin An said to them, "The third uncle told me on the way.

You now want to know the pros and cons of telegraphs and telephones, and you want to know what to install. ”

Ying Zheng said: "Since you know everything, then tell us what are the advantages and disadvantages of this telephone and telegraph."

If you have a telephone, why do you need a telegraph? Don't you think that's a big deal? ”

Qin An smiled and said, "It's normal for you to have such thoughts, because the advantages and disadvantages of the two are very obvious, and the telephone can talk directly to the other party as long as it is dialed." There's no need to remember so many cumbersome passwords.

Mouth-to-mouth speech is so simple that both the people and the state choose to use the telephone. ”

"Then we'll develop telephones." Ying Zheng said.

However, as soon as he finished speaking, he realized that something was wrong, and hurriedly asked: "No, since everyone uses telephones, why did you invent the telegraph?" ”

Qin An said helplessly: "Lack of resources, whether it is a phone call or a telegram, you need a point."

After the invention of the telegraph, it was no longer used after it was used for a period of time, to be precise, it was not used by the people, and the telephone was used by the people. ”

"And who's still using it?" Ying Zheng asked.

"Military." Ying Zheng said, "There are also the National Security Bureau, etc., because this telegram needs a password, so it was discovered, and it is difficult to decipher if you don't know the password."

In this way, messages are transmitted between armies, and the enemy cannot get the news in the first place.

As you know, timing is very important for marching and fighting, and after we intercept the enemy's intelligence, we will make arrangements as soon as possible, and wait until the other side enters our encirclement.

But when we intercept the other party's information, only to find that we can't know the other party's password, and we don't know the other party's intentions, that's a terrible thing.

And vice versa, even if the enemy gets our telegram, there is no codebook, and this telegram is the same piece of waste paper.

Even if someone can translate it, I'm afraid it will take a day or two, and these two days are enough for us to do anything. ”

"Understood. I get it. Ying Zheng immediately said excitedly, "This telegraph is very suitable for the army.

Regardless of the time of arrival, it is possible that the enemy will get our telegrams. But they couldn't translate it, so the telegram was of no use.

Good stuff, really good stuff, no wonder the telegram is so troublesome, it still exists. ”

Qin An smiled and nodded: "That's right, a codebook is very important, the more cumbersome the codebook, the more headaches it will be, the simpler it is, the easier it is for people to crack."

After the advent of the telegraph, there were two very important professions, the dispatcher and the translator.

The sender is the person who receives and receives the telegram, and the translator is the person who translates the telegram. ”

"Cultivate, you must cultivate well." Ying Zheng said, "Such talents must be cultivated." ”

Qin An sighed and said: "This is not easy to cultivate, generally speaking, whether it is a transmitter, an answerer or a translator, people with some specialties will be protected by the state."

There was once a blind man who could hear very subtle sounds, and heard sounds that ordinary people could not hear, such as the sound of wind, rain, and even the sound of human breathing.

He can also hear the steps of others in the noisy streets, so that he knows who is capturing him.

Just such a blind man shook off a dozen people who were chasing him on the noisy street. ”

"Why did you arrest this blind man?" Ying Zheng asked, "Who are they all a group of?" Where is the blind sacred? ”

Some people died, but not completely......