This thing looks a bit like a mechanical clock, covered with gears and some mechanical structures, but it is obviously not.

The rectangle is like a small coffin, with wheels marked with the zero, one, two, three, four, five, six, seven, eight that have just been designed...

Liang Kai glanced at Banana and asked unexpectedly: "What does 158 plus 274 equal?"

"What?" Banana was stunned by the question.

Liang Kai smiled slightly, and did not force him to turn the wheels on the surface of the machine, with the number eight, ten, five, and one hundred, one; then the number four, ten, seven, and two... Then he turned the handle and heard the sound of constant gear rotation.

There is a row of empty windows above the machine, and the gears with numbers below rotate, quickly freezing on the 432.

"This is..." Banana widened her eyes. She couldn't believe it. She looked at Liang Kai, then looked at the machine, and quickly pulled her fingers to calculate. His IQ was quite high, and he got the result in a while, which was exactly 432!

He gasped and snatched the machine from Liang Kai's hand. He continued to calculate and verify it in disbelief.

[Looking, calculator? Advanced!] The live broadcast room was also in an uproar.

[Boge! Awesome! When will I bring my iPad laptop with me?]

[That's not a calculator, it's an adder! There are things in the world of 16 and 7!] There are also relatively knowledgeable netizens who have announced the correct answers.

That's right, this thing is called an adder.

It is an industrial era work that uses the principle of gear transmission to realize addition and subtraction operations through manual operations, and can also be said to be the prototype of mechanical computers.

The Frenchman who once became popular in France in the 17th century and designed and manufactured the first adder machine was called Pascal.

Is it a bit familiar? Yes, it is the discoverer of Pascal's law that designed the experiment of water fracturing barrels, which still exists in physics textbooks, and the founder of the hydraulic press of a very important modern large-scale industrial equipment.

Liang Kai is certainly not the original version of Pascal, it is more exquisite and efficient than that one.

First of all, this world is in ninth, not decimal, and the gear occlusion conversion is more convenient. Secondly, although he himself can't handle the principle of the addition machine, is there any engineering experts in the project team? Even if there is no Pascal's genius, it has the advantage of spanning hundreds of years, so it is not too difficult to further optimize the prototype.

Bananas are still calculating and verifying, and they are even a little crazy.

Don’t underestimate these things made by Liang Kai.

Especially telescopes, microscopes, and adders!

Although it seems ordinary in modern times, you should know that when these things were born on Earth, each of them caused an unimaginable sensation!

The telescope broadened its horizons and made Galileo famous in Europe. However, as the "father of modern mechanics" and "father of modern science", the giant who was almost deserved to be the giant who stood on the shoulders of giants as the great god Newton said, optimizing the telescope is just a merit of icing on the cake;

However, the effects of microscopes that broaden the world from another level can better see their influence.

The microscope made Levinhoek, who had no formal education, directly from a silk merchant to a member of the Royal Society of England, Queen Anne of England, and a guest of Peter the Great of Russia. If it were put in modern times, it would be equivalent to promoting a person who had never been to elementary school to an academician, which may be even more exaggerated than this...

As for adder machines, modern people don’t know much, but at that time, the impact was unprecedented!

Why?

Because this equipment proves that it is completely feasible to use a pure mechanical device to replace human thinking and memory!

When the installation was on display, people rushed to watch the city, and its popularity and influence were comparable to the popularity of Apple smartphones and tablets when they were released.

Not to mention that there are some other good things besides this.

After repeated verification, it was confirmed that this small machine could indeed calculate. Banana looked at Liang Kai with horror: "How did you do this?"

Obviously I understand the meaning of the representative. Yukita Feimina also has the same expression.

In another world, the appearance of the adder is amazing, and in this world without abacus, it will obviously be even more amazing!

Liang Kai couldn't explain more, because he himself didn't understand, so he had to throw out a book called "Principles of Additive Machinery Production" and let them pass it on their own.

After getting the supplies needed to go to the mountain city to clear the road, Liang Kai breathed a sigh of relief and finally could be busy with his own business.

Of course, the so-called "self" matter is still someone else's after all.

After a period of rest just now, the power of extraordinary creation has gained a balance. This time, he needs to do something new and more important.

More important than telescopes, microscopes, and adders?

certainly!

Rulers, weights, thermometers, barometers... These are things that are prepared to unify weights and measures.

============

Three big rivers flow down the holy mountain, bend through the continent, and come together somewhere. The city built here is called Sanhe City, and the Principality became Sanhe Duchy.

The one in the south is called Nanhe, the one in the north is called Beihe, and the one in the middle is the thickest, the largest and most dangerous, not the Zhonghe, but Tianhe.

The naming method of the other world is often so simple and crude.

Nanhe County is at a bend in the middle of Nanhe River.

The river water has accumulated thousands of hectares of fertile fields, dense forests and lush greenery. However, it is the dark period and you cannot see these colorful flowers paving the city.

The Nanhe River is a tributary of the three rivers, and the Nanhe River itself also has tributaries.

At a river fork several meters wide, pedestrians come and go, and from time to time, people stop and wait and see curiously.

There are people busy around the star gate platform built by the river, and the sound of "ding ding dangdang" is endless. All kinds of strange things appear from time to time, making people confused.

This is the corner of the Nanhe Outer City, and few people come here. However, it is the dark period and the city is full of people, so these corners are not spared.

In the dilapidated tavern, the four-star mage Sanvalge hooked up with the coquettish and old dancer. He had a drunken eyes and a confused voice. He heard the bell of the star tower in his ears. Then he stood up slowly, left the tavern, turned over and stepped on his sloppy mount, and ran towards the river "Dedede".

There is a bridge on the river, but it is too far away. Sanvalge rides on eight-legged flat beasts and looks like a bamboo row of riding beasts directly into the water. The riding beasts can swim, and the water splashes splashed all the way to the other side, making Sanvalge's clothes soaked, as if they were fished out of the water.

But for a moment, the human and beasts landed on the other side.

The remote star gate here that rarely opens, which leads to the small country town, is rare to gain some popularity. It seems that something is different...
Chapter completed!