As soon as Reiner's finger touched one of the green boxes with the word "Find" written on it, the whole picture immediately changed to a pattern with only one blank line.

Gently touching the blank line, a pile of dense text appeared at the bottom of the picture.

Nearby Ashilua soon noticed that these were buttons made of light, with different words on them.

"Because handwritten text is difficult to distinguish for various reasons, this device uses a fixed keyboard input, well, just like a typewriter used by ordinary people."

Reiner explained that in a newspaper run by ordinary people such as Daily Priest, text input relied on a machine called a typewriter, where people typed text on a keyboard and pressed a lever to print the corresponding text on the paper, which in the hands of a skilled typist far exceeded the efficiency of handwriting, and in the case of pure records, even the automatic notes of a mage.

In some of the new aristocratic and merchant families, learning to use a typewriter became a compulsory subject for children, so many of the students present were familiar with the keyboard.

As he spoke, Reiner casually typed a book title, "Introduction to Alchemy," and pressed enter.

After waiting for about three seconds, the screen changed abruptly, and strings of text replaced the previous blank space and appeared in the center of the frame.

As you can see, this is a list of different versions of "Introduction to Alchemy", this basic book of alchemy compiled by Lord Hohenheim has been revised many times due to the development of alchemy spells, the latest one, and the biggest change in the Moon of White Dew, Reiner's electrolyzed water experiment has become a classic example in the textbook, and the original theory of the four elements has been reduced from a large chapter to a chapter in the history of alchemy.

Reiner selects the latest edition and clicks on it to see the book in the library.

Ten copies were loaned out and three were in the library, for a total of thirteen copies.

At the same time, you can also see a brief introduction to the book on this page, and even see some of the chapters at the beginning, which is quite convenient for students who do not know which books they need and can only grasp a general range.

"This is the most basic search function, and of course, this system also comes with borrowing and returning functions."

Reiner said, and with a wave of his hand, a slightly heavy book flew from the bookshelf in the distance, which was the latest version of "Introduction to Alchemy".

He expertly pressed the back key and returned to the original page, this time Reiner clicked the borrow button.

When the button was pressed, the screen went blank and no words appeared for a long time, and just as the other students were confused, Reiner put the heavy book "Introduction to Alchemy" on the stone.

Drops –

The stone beeped, and immediately after that, the originally blank screen immediately appeared information about the "Introduction to Alchemy", and at the bottom there was an option to borrow it.

Reiner pressed the borrowing button, and the screen jumped again, this time prompting him to put his identification on the screen, Reiner took out his badge, and with a swipe of it, his message appeared again.

"This badge corresponds to the school badge you issued when you entered the school, and I think you have already used it when you ate in the cafeteria."

Reiner said, causing many students to look down and check the school badge on the chest of their uniforms.

The spells used in this school emblem have been put into use, and it is a simple sign to confirm identity, only if you hold the school emblem, you will not be alarmed by the defensive circle that surrounds the school, and as for functions such as dining in the cafeteria, it is not uncommon, and the mages of the mechanical department have studied many corresponding spells a long time ago.

This is also the reason why Reiner was able to develop a decent database so quickly, he didn't really need to build a computer system from scratch, he only needed to introduce the characteristics of the Black Huang Rock to the original mechanical magic system of this world, and use the magic conduction characteristics of the Black Huang Rock to realize some functions that are difficult to achieve with magic.

It's like the database around Reiner now, if he is a high-level mage in the mechanical department, he can use pure magic to create something with similar functions with a certain amount of time, but its complexity and the materials required are far from being comparable to the cheap Black Huang Rock.

By the way, in order to ensure the supply of raw materials, Reiner took a detour on the way back from the Rainbow Tower to check the production of the Black Huang Rock Mine, and by the way, he bought several mines with his own money, and the value of this rock has not yet been discovered, and Reiner has now semi-monopolized the supply of raw materials for the Black Huang Rock, and it has not cost much.

Reiner then demonstrated the process of returning a book, similar to borrowing, by simply scanning the book, then scanning the badge, and leaving the returned book aside, which was periodically placed back on the shelf by the alchemy creature.

It's a simple library management system, but it's done entirely mechanically, which is a novelty for students who are accustomed to the glow of magic, especially since the interface has a certain simple and cold aesthetic that is completely different from the bells and whistles.

Reiner then gave the machine to the students, smiling with relief as they scrambled to try out the library management system.

This is just a test to test the most basic features, and if there are no surprises, then Reiner can focus on the rest of the development.

Reiner was impressed by the convenience of the Rainbow Tower, and with the power of legendary mages, even ordinary mages could enjoy a great living experience, but at the same time, their use of such a handy tool was extremely rudimentary.

This led Reiner to think of the idea that if primitive people were given a hard alloy, they would only use it to make spears and swords, but if they were given the same thing to modern people, they would have developed a brilliant industrial civilization.

So, it's not that these legendary mages don't have enough imagination, but because they don't have enough accumulation, and at this point, Reiner's status as a time-traveler gives him an endless advantage.

Reiner was given the tools to communicate over long distances, not just to convey information, but to establish academic forums to facilitate exchanges between mages across the continent, to develop online shopping to communicate with each other, and even to make games to bring new ways of entertainment.

However, all of this requires him to complete the prototype first.

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