After school that day, the students of this class were all colorless, and they all floated out with dull eyes.

After six years of suffering, I thought I would finally be able to see the light, but it turned out that I was greeted by a deeper darkness.

Thinking about the next four years, everyone wants to cry without tears.

At first, the students of the other classes wondered why these seniors had been elated recently, and why they suddenly looked like life was worse than death.

When I learned about the situation, my face changed dramatically.

The future of these seniors is also their future......

Some people are better off than dead, and naturally some people rejoice.

For example, Zhan Caixian likes it very much.

With the teachers there, the students are also interesting, they can learn all kinds of interesting things, and they can also go to the library to read interesting comics.

She doesn't like to work in any department, and her family is not short of money, so it's best to keep studying in this school!

Ten days later, the first class of students graduated again, but this time the graduation party was much more modest.

And this time, all but one of the students from civilian families chose to graduate.

After all, it was enough for them and their families to learn this point. Four more years of study, for them, is too stressful. After all, the family situation of ordinary people does not support them to continue to study like this.

They don't want to do that either.

Now Da Yao is in the time of change, Lan Cheng and Da Yao, every month is different, when they are in the academy, they watch all this, and they often have the idea of getting involved.

Therefore, they chose to graduate and join the six ministries.

In this regard, Ren Baqian also understands very well.

As for the heirs of those powerful clansmen, none of them graduated if they succeeded.

All of them went to college.

In the midst of the wailing, the first thing that greeted them was the entrance exam a month later.

......

At this time, in the court, the eyes of a group of people were on a small table in the center.

On the table was a black box with a disc with numbers 0 to 9 written on it.

And there is a thread on the box, which is connected to the outside of the main hall.

Ren Baqian held the microphone on the box in one hand and turned the disc with the other, and a beep came from the microphone a moment later.

There was only one ring, and the other end was picked up.

"Your Highness?"

"We succeeded!" Ren Baqian looked at everyone and smiled.

Before anyone could react, the other end of the phone cheered.

Ren Baqian said a few words of encouragement on the other end of the phone, then hung up the phone and looked at everyone in the hall with a smile.

"Your Highness, isn't this the same as the previous radio station?" Shi Qing asked.

Although Ren Baqian didn't explain, they had already guessed the purpose of the box.

"No, a radio is a radio. Radio is a conversation between us and a channel, which belongs to fixed-frequency communication. There are several disadvantages, first, the number of fixed frequency is limited, and it is impossible for everyone to use the radio station.

Second, if someone else gets the radio station, they can hear the conversation in the channel.

Just because it hasn't happened before doesn't mean it won't happen in the future.

Thirdly, the anti-interference ability of the radio station is weak, for example, in the land of Tianjing, the radio station cannot be used. ”

Everyone doesn't understand technology, and they don't understand the meaning of Ren 8000's words.

It's just that from Ren Baqian's words, I can hear that this box is a better thing than a radio station.

"Tell me about it. The empress sat on the top and said lightly.

"Yes!" Ren Baqian gave the empress a smile.

Turning around, he said: "This is a telephone, which is used for long-distance communication in the same way as a radio station."

The others don't need to be said, just say two of them, first, this is point-to-point communication, a phone only needs to dial the corresponding number, you can communicate with any phone.

For example, this one can make point-to-point calls with any department of the six departments, or any department in any city at any time, and only the people on both ends of the phone can hear everything. ”

Everyone nodded, and this time everyone understood.

The radio station is everyone chatting together, and this phone is two people chatting privately.

"Second, and most importantly, the ubiquity of telephone. Telephones can be laid anywhere in Dayao, and there can be millions, tens of millions of telephones.

Whether it's a department, a city, or even a household.

Everyone can talk to one of the millions of calls on a phone and dial the corresponding number.

For example, Lord Shi can install such a phone in his house.

As long as I have the corresponding number of Shi-sama's home phone, I can call Shi-sama's house from any place at any time through any phone and talk to Shi-sama.

For example, if you are in any corner of Lancheng, or in any corner of Dayao, even if it is in the middle of the 60,000 mountains, you can contact the government by phone. ”

After Ren Baqian finished speaking, he looked at everyone with a smile.

We'll have to wait for them to react for a while.

Although they had seen enough new things over the years, it still took a little time to digest Ren Baqian's words.

In the early days of the earth, the use of telephones was the magnet telephone, the kind in the movie that used to make a phone while generating electricity while cranking, and then transferred it through an operator.

After that, there is a common telephone, which no longer needs to be hand-cranked, but it still needs to be manually connected by the telephone operator.

This kind of telephone needs to be transferred manually, so there are no few numbers, and the number of natural users cannot be large.

At that time, the largest telephone office in Asia, there were only a few thousand users.

The most restrictive to the telephone is not the technology of the telephone, but the technology of telephone interaction.

The above two are manual continuation, and then the step-by-step switch can already allow the phone to be connected through the mechanical mode, but there are many shortcomings, especially the large loss and difficult maintenance.

Knowing that this kind of thing will enter thousands of households sooner or later, Ren Baqian naturally passed this kind of thing directly.

He uses the more mature vertical and horizontal switch technology.

In the fifties and sixties of the earth, the use of such switches has become mainstream.

In China, it was used until the eighties and nineties.

Of course, this is also a technology that will be phased out sooner or later.

However, the next generation of technology needs electronic technology.

Ren Baqian waited for a long time, and only then did everyone's faces gradually begin to be moved.

"Huh?"

"Your Highness means that this thing can be installed in our house?"

"It's not just your house, it's everyone's home, even the stockades on the mountains!"

Ren Baqian corrected.

Of course, there is a premise for this, first drive away those birds and beasts that have nothing to do with the wires!

The cities are okay, but there are a lot of fierce beasts in the wild who like to pull a wire or dig a hole.

"Huh——?"

Everyone immediately exclaimed.

Everybody's home with a phone like that?

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