"Lalala, lalala, I'm a little connoisseur of newspaper sales......"

On the way home, Lin Hong happily hummed a newspaper song.

In his hand, he was holding tightly the "China Radio" concurrent magazine, but this one was not a half-fragmented copy, but an intact, somewhat old, but very complete.

Lin Hong was still shocked by what he had just seen in his heart at this moment, he didn't expect that under the black cloth, there was a wooden cabinet about three meters wide and two meters high, and the cabinet was full of books!

This was the first time Lin Hong had seen so many books, and each one was very thick and a tome.

Lin Hong's memory is very good, he read all the way, and he memorized the names of most of these books, including "Basic Course of Electromagnetic Field", "Short-wave Communication Circuit Design", "Principles of High-Frequency Circuits", and "Principles of Communication...... And so on and so forth.

Except for a few works, most of them are books on radio, circuit design and wireless communication, some Chinese and some in foreign languages, dazzling and varied, which simply dazzled Lin Hong.

Lin Hong didn't know the value of these books, although he was very shocked that Old Xu Tou had so many parameters, but he didn't think much about it. Before leaving, he mustered up the courage and asked if he could borrow the magazine called "China Radio" in the canvas greenhouse.

Lao Xu Tou agreed very generously, and he also took Lin Hong to another room, where he saw several large boxes of magazines and newspapers. Old Xu Tou found a complete version of the torn magazine from one of the boxes.

At this time, Lin Hong knew that the real good things had been sorted out by Lao Xu Tou and stored at home, and those outside were all waste products to be disposed of.

When passing by the small shop in the village again, Lin Hong still resisted the temptation of sour plum powder and big bubble gum, and was not willing to spend the "huge money" of five cents in his hand. In his mind, he had another plan, and he decided to save the money for a rainy day.

As soon as he returned home, Lin Hong couldn't wait to open the "China Radio" magazine and read it, and the first thing he read was the incomplete "Radio History" that he had read before.

From the end of the nineteenth century to the present, it has a history of more than 100 years, in which radio has undergone a process from scratch, and to today, the relevant technology has been quite perfect.

This article is purely introductory and does not involve any technical knowledge, but it arouses Lin Hong's great interest in radio.

Early the next morning, he came to the door of Lao Xutou's house early, which made Lao Xutou, who had just gotten up for morning exercises, a little surprised.

"Grandpa Xu, I'll return the book."

Lin Hong went straight to the point and explained the intention.

"Oh? Finished reading it so soon? ”

"Hmm!" Lin Hong nodded seriously, he hesitated, and finally mustered up the courage to ask, "Grandpa Xu, I still want to borrow a book, is it okay?" ”

Lao Xu Tou just asked casually, although there were not many pages in that magazine, but if you want to really read it carefully, it is a little difficult for an adult with relevant knowledge. In his opinion, what Lin Hong said after reading is just turning over the past, and for children of his age, only pictures are their favorite content.

At that time, Lao Xu Tou didn't think that the magazine was suitable for Lin Hong, and he recommended several wonderful villain books that were not usually common to Lin Hong, but the stubborn Lin Hong did not change his mind, and repeatedly insisted on borrowing the magazine, so he agreed to lend it to him, and told him not to break the pages.

Therefore, Lin Hong came to return the magazine so early today, it can be said that it was in his expectation, according to his thoughts, it must have been Lin Hong who turned a few pages yesterday, and then completely lost interest.

Lao Xu Tou took the magazine handed to him by Lin Hong, and saw that the magazine was complete, not even a new crease, which showed that Lin Hong still paid attention to its protection.

He smiled and said, "Grandpa told you yesterday that you can't read this magazine at all now, you just didn't listen to it, and now you regret it." ”

Lin Hong was slightly stunned: "Grandpa, I have no regrets." This book is very good, I read it all. ”

"Done? Well, that's good. Old Xu Tou said this verbally, but he didn't care in his heart, and then said, "What book do you want to borrow this time?" Or I will lend you that "The Biography of Yue Fei", the content of that villain book is very exciting, you will definitely like it. ”

Lin Hong shook his head: "Grandpa, I don't want a villain book, the title of the book I want to borrow is called "Concise Radio Principles". ”

"Concise Principles of Radio?"

Old Xu Tou was really stunned, if an adult told him to borrow such a professional book, he might be able to accept it, but from the mouth of an eight-year-old child, it felt very strange to hear.

"Lin Hong, why did you think of borrowing this book?" Old Xu asked curiously.

"I saw an article in this book that explained in detail how the 'ore radio' works, and I wanted to make an 'ore radio' myself. It says that in order to understand the basic principles of ore radio, it is best to study the book "Concise Radio Principles" first. ”

Lin Hong's answer made Lao Xu Tou even more surprised, yesterday he scanned the issue of the magazine a little, and there was indeed a tutorial on the production of "ore radio". In this way, the kid confirmed that he had read the magazine.

"Maybe this kid happened to see that article, which just piqued his interest for a while."

Lao Xu Tou thought in his heart, after all, this kind of do-it-yourself content is also very attractive to children.

"Good boy, that's good!"

Old Xu Tou praised Lin Hong first, and then continued: "Since you want to read this book, I'll find it for you." Although the ore radio seems to be relatively simple, it is also difficult to really succeed. Lin Hong, if you don't understand anything in the process of making, you can ask grandpa at any time. If there's something missing, you can just come to me and find it, and there's little complete stuff here, but there's never a lack of bits and pieces. ”

"Thank you, grandpa!"

Lin Hong was overjoyed when he heard this, he was embarrassed to open his mouth to Lao Xutou, after all, although he could find some materials for making ore radios by himself, he still lacked some important parts.

Lin Hong's gratitude to Lao Xu Tou in his heart is really indescribable, he doesn't know how to speak, but buries this gratitude deep in his heart.

Lin Hong followed Lao Xu Tou to his bedroom again.

As the black cloth was opened, facing a cabinet of neatly placed books, although he was already mentally prepared, he still felt very shocked.

"Concise Principles of Radio" ......"

Old Xu Tou recited the name of the book, put on reading glasses, and began to look for it in the cabinet.

Although he knew that he did have a collection of books, he didn't know where to put them, after all, there were too many books, and although he had numbered the compartments of this cabinet in order, like the bookshelves in the library, he didn't take the time to systematically organize and number them, just put the books of the same type roughly together according to the general classification.

Old Xu Tou walked from beginning to end, but he didn't find it.

At this time, Lin Hong's voice suddenly came from his ears:

“486…”

The voice was a little muffled, and Old Xu Tou turned his head to look at him suspiciously, and saw that he was on the right side of his workbench, curiously observing his radio station, and did not follow behind him at all.

He lifted his reading glasses and continued to search for the book.

"Found it!"

Lao Xu Tou saw that this book was located next to a book called "Principles and Design of Transistor Receiver Circuits", because the book was too thick, it happened to cover up the "Concise Radio Principles" slightly, so that he looked for it here several times and ignored it.

Old Xu Tou pulled it out of the crowded book, and the pages were already seriously yellowed, which showed that the book had been some years old.

"Thank you, grandpa!"

In the courtyard, after Lin Hong politely thanked him again, he happily took the book home.

"This kid is so polite." Looking at Lin Hong, who was far away, Old Xu said with a smile. "It's a pity that this kid was injured in the head at the beginning, so that he ......"

The reason why Lao Xu Tou is so good to Lin Hong is because of sympathy, and on the other hand, because he also has a granddaughter who is about the same age as Lin Hong, but for some reason, he can't enjoy the joy of family for the time being.

When he returned to his room, he covered his collection of books with a black cloth, mainly because sometimes there were guests in his house, and although they saw that they were nothing, they always needed some explanation, and over time he simply covered them up to save others from making a fuss.

But the next moment, he tore off the black cloth again, because his mind suddenly remembered the sentence that Lin Hong muttered just now:

“486…”

He remembered that the horizontal and vertical rows of his bookshelf grid codes were designed in numerical order, and he wrote two-digit numbers on them, for example, in the fourth column of the first row, the number of the grid was "14".

He re-found the location of the book just now, that is, next to the tome of "The Principle and Design of Transistor Receiver Circuits", and then was very shocked to find that the number of the grid where it was located was clearly "48", and the sixth book of this grid turned out to be the one that Lin Hong had borrowed just now.

"It can't be, maybe I misheard."

Old Xu Tou shook his head and said to himself.

Seek demons