"Shengshang, this is the abacus recorded in the ancient book, one of which is written like this, the abacus controls the four times, the longitude and latitude are three talents, and the ministers have found a lot of counters, and they don't understand what this sentence means, as well as some annotations of the Northern Wei Dynasty, but now that there is a real thing, this is considered to be through."

Well, I want to cry, I have an abacus, I don't know how to use it, you know words, but you don't know what this abacus is.

Actually, when Li Er learned the news, the chatter was also talking to Yang Qiao.

What to say, when it overheard, or scanned the conversation of Li Erjunchen, it knew that this abacus was the abacus, yes, I knew it earlier, and I would have searched for such a result, but on the contrary, I actually gave the wrong information, and even told Yang Qiao, this is invented by the Northern Song Dynasty, you can use it.

"It's wrong, it's wrong, it's a big deal to call this abacus abacus, or I invented it, not me, let them find a prototype!"

Tricks, who is afraid of whom.

"Husband, husband, look, we are out."

Well, it's been a long time.

Oh, think about it carefully, I think it's simple, this abacus, since it was given to the daughters-in-law, they use the most addition and subtraction, this multiplication and division, I really haven't learned, and they, can use it for so few days to practice, it's not bad.

They?

Well, Li Lian has practiced for a long time and has not practiced to become famous, naturally, she has to pull her sisters to suffer together, so this practice is done, it will become them, maybe, there will be early and late, but if you can get together, you can only meet together, besides, this kind of thing, fighting for priority, it's not interesting, isn't it.

"Husband, this is called a lonely goose out of the nest, not to mention, the real image."

"Husband, is there any other fun way to play?"

"Something else?"

Yang Qiao couldn't laugh or cry, there is something else, can I not show it, isn't it nothing, in fact, there is only one name, such as, Phoenix spreads its wings, Phoenix spreads its wings, I don't know if this is two formulas, or one formula, but there is only a name, no formula, and it is in vain to say it.

"This, no, it's this lonely goose out of the nest, and I play it occasionally."

Yang Qiao was a little insincere, but the daughters-in-law were willing to believe it, what could they do, but, if you want to say that you are insincere, it is really the case, this abacus, a wife and concubine, each person has an abacus, but Yang Qiao does not have it in his hand, otherwise, how can Luan'er envy her mother and kiss them, in fact, Li Lian's abacus, Luan'er wants to play with it, Li Lian doesn't give it, so Luan'er wants it even more.

"Daddy, aren't you going to make me a teaching abacus, and Luan'er has a separate abacus?"

On this day, Luan'er was a little anxious, and her father said, why hasn't she done it all along?

I didn't do it, I did it earlier.

"Well, Luan'er, don't worry, don't worry, now, I'll teach you how to calculate with a chip."

Yang Qiao said to Luan'er with a smile.

"Count the chips, aren't they those little wooden sticks, aren't they?"

"Wrong, Luan'er, counting is the easiest, next, I'll teach you a complex algorithm, and you can teach your classmates."

"Complicated calculations, boy, is it necessary?"

"It's not necessary, but it's necessary, for Luan'er, her hobby should be this calculation, then, it's normal to teach her the history of this so-called calculation, besides, I don't expect Luan'er to become a mathematician or anything, so, it's enough to learn some miscellaneous studies, publish a book or something, be a mathematician, but it's too brain-consuming, you say, a little girl, start balding early, isn't it a joke!"

Well, it's a joke to say these things, but, indeed, recently, this tuberculosis has found a lot of historical information about the calculation of chips for Yang Qiao, and he learned that the calculation of chips was originally used in this way, rather than simply counting with sticks.

"Come, Luan'er, look, this is a chip, so, it's one, it's two, it's three."

"Daddy, isn't this just counting, what's the difference?"

The difference, well, has been there since five, you go on and see, don't be in a hurry.

In fact, what Yang Qiao didn't know was that because of his arrival, he directly changed the calculation method, first of all, there were Arabic numerals, but there was really nothing with this number, but this number, plus the formula, and even the small ninety-nine table, it would be different.

Yes, you see, use the calculation chip, this to nine, it is more troublesome to write, if you use the calculation formula, in other words, this calculation formula, at this time, in the world, it is also considered the most advanced, so, this calculation chip, actually used the braid chao, and then slowly disappeared, ah, no, it should have disappeared quickly, except for some historians, or Du Niang, who still knows, the calculation algorithm, what is the algorithm, so, Yang Qiao decided, to keep this calculation, because, Yang Qiao suddenly found that this has a number, Plus what four operations or something, plus the abacus, this calculation, or, the only thing left, that is, to teach the children to count from one, to a hundred, or to count within a hundred addition and subtraction, and this addition and subtraction, even, to use a hundred wooden sticks.

"Hee-hee, Daddy, why can these six do this, aren't these just two wooden sticks?"

It's not very simple, it's easy to say, you see, this pendulum, you know, this is six, this is seven.

"Well, that, Daddy, why isn't there the zero you said?"

Well, Yang Qiao ignored it, or how much history was created, the use of this zero, unknowingly, even the little baby knew about it, if you want to say this zero, forget it, it's still Du Niang!

"Zero?"

Sure enough, Yang Qiao quickly searched his mind, and even let the chatter search for information.

"No, no, there was no such thing as zero before a certain dynasty, so your zero athlete number may become the greatest number in history!"

Zero, remember, male zero, it's Yang Qiao, female zero, it's little sister.

However, this division feels a little wrong, because, the male number one is Li Er, and the female number one is the eldest grandson.

However, some people added it very far-fetched, this zero is brother and sister, it should refer to Fuxi, Nuwa, is this also brother and sister, okay, you are not afraid that Li Er has opinions, I am naturally not afraid, and I don't know whether you are ready to harm me or yourself.

And some mathematicians, oh, can only say that, in fact, they are stronger in mathematical calculations, and it is a bit far-fetched to call them home, or even masters, but if there is no Yang Qiao, call home, then it is really everyone.

"Zero, let's create one, how can this zero be represented by a wooden stick?"

Yes, maybe Yang Qiao is a little bored, or maybe he really wants to create something, after all, since it's a decimal system, why do you only have nine numbers, so, isn't this reasonable!

What, ten, is the tenth number, nonsense, ten, that's already a two-digit number, ten, officially, should be ten.

"Daddy, look, this zero, otherwise, it's broken like this, isn't this zero?"

Luan'er said excitedly tugging on Yang Qiao's clothes.

Sure enough, it's really that simple, in this way, whether it's writing or swinging, it can really represent zero, you see, one of these sticks is broken, this one, you say it's one, or how many, obviously, it's a new number!

"Well, yes, yes, it's a good idea, and even, if you use it in the system, it's okay."

In fact, at this time, this tuberculosis, or the system, is reasoning about the decimal calculation method, how to feel, like, with this way of calculation, if you add this zero, how to feel, it feels simpler than any previous calculation method, you know, before, the so-called decimal system of the system, but with binary conversion, not directly with decimal calculation, this is the defect of the computer, when calculating, but also through a hand conversion, and then, there is this decimal system, but, If I add a reasonable decimal zero, I use a chip again, and it seems to be!

However, this is not something that Yang Qiao can study, and he doesn't want to study it, forget it, Yang Qiao will live for another two hundred years, and he won't be able to use a computer, ah, no, he doesn't need a computer.