Chen Fan wanted to buy rivets, naturally not to repair circuit boards, but to make saddles and belts.

Rivets are used to fasten the leather and plates, as well as as the attachment points of the belt, which is very good and works better than ordinary nails. In particular, it is also better to punch holes in the belt with large rivets. That's why he thought about buying some rivets and going back and making the saddle and belt better.

Unexpectedly, I heard such words in Wang Xiaoling's mouth.

It made him a little numb.

The rivets were not bought, so he bought some koji, big koji, small koji, red koji, wheat koji, and bran koji.

Needless to say, large and small koji are made into liquor, red yeast and wheat koji can be used to make rice wine, and red yeast can also be made into tofu and cherry meat. Bran koji is a good ingredient for making soy sauce and fragrant wine, and it can also be used to brew beer, so Chen Fan bought some of them.

He hadn't started brewing the grains he brought back last time, so he originally wanted to wait until he was done with this while.

However, I wiped Jiang Lili's wound today, but there was no high alcohol, so I could only use Yunhu Daqu, not to mention that it was expensive, the effect was not as good as alcohol, so I simply started brewing early, first collected a little alcohol for backup, and the brewing became by the way.

He also wanted to buy some reagents to detect methanol, but unfortunately the supply and marketing cooperatives didn't have them, so he had to go to a special chemical store, and he had to go to the county seat to buy them, so he could only wait for later.

Anyway, the boiling point of methanol is 64 degrees, and the boiling point of ethanol is 75 degrees.

If it really doesn't work, just cellar it for a year to ensure that all methanol volatilizes cleanly.

……

Coming out of the sales department of the supply and marketing cooperative, Chen Fan rode a horse and walked slowly to the waste recycling station.

The reason why it is slow is because he is thinking about the relationship between rivets and circuit boards.

If you don't say that your spirit is high, your brain is easy to use, and many things can be recalled as long as you think about them seriously.

And he studied mechatronics in college, and he was not a layman with circuit boards, and he also played with old machines of tubes and diodes in school.

Rivets were indeed an indispensable part of early circuit boards, but he hadn't paid attention to them before.

A long time ago, PCB printed circuit technology was not yet popular, and most of the tube radios in the forties and fifties used to solder circuits by building sheds.

The so-called scaffolding, is to solder a piece of electronic components on a plate, forming a circuit, if the printed circuit board is regarded as a plane, then the scaffolding is three-dimensional, with the eyes of later generations, no one will think that it is a circuit board.

Among them, the part that fixes the metal lugs of some electronic components on the board is rivet, which is equivalent to the solder joints of later printed circuit boards.

If that's all there is to it, it doesn't show how important rivets are to the board.

Time passed slowly, and in the 60s, transistors began to gradually replace electron tubes and became the mainstream components of electrical appliances such as radios, but because the process had not yet followed, many of the electrical manufacturing technologies at that time followed the assembly method of electron tubes, and even the movement was designed according to the movement of the electron tube.

This gave many electronics enthusiasts room for DIY, and many radio equipment stores also came into being.

At that time, a high-frequency transistor cost more than two yuan, the genuine imitation Su tube 401, the domestic model is called 3AG1, and one cost 6 yuan and 3 cents. The smaller the electronic components, the more expensive they are, and the larger the ones, the cheaper they are.

After buying these high-priced electronic components, you have to fix them on the circuit board and form a circuit with metal wires at the same time, so that it can be regarded as a complete circuit board.

One of the most critical connection points is the rivet.

At that time, a kind of board was popular, called "hole board", also called "universal board", and it is used by electronic enthusiasts until now.

In fact, it is a piece of plate, neatly arranged N small holes, those holes are convenient for riveting, through rivets to connect various electronic components with metal wires, forming a complete circuit, is a "circuit board".

In response to this trend of electronic DIY, even professional magazines have joined in to provide technical guidance.

(Radio magazine in the 60s, analyzing the radio circuit board, the small white round hole in the brown plate is the rivet)

The expensive price of the radio and the simple assembly process make many people choose to build a radio by themselves, and rivets are also classified in the category of electronic spare parts, which appear in electronic equipment stores rather than hardware stores or supply and marketing cooperatives.

After figuring out the reason, Chen Fan thought about going to the county one day when he was free.

I haven't been to the county yet, and I don't know what the county is like in this era, at least there should be a movie theater, right?

Having said that, Nanhu Town is not small, there are more than a dozen large and small units, cough cough, although most of them are small workshops, but there are not "big enterprises" such as water transportation companies, but there is not even a movie theater, it is really stingy.

Secretly spitting out the trough, and after a while, I arrived at the recycling station.

This is the second time he has come here, and the last time he was in the market in the month of Layue, thinking that the protagonists written in it were all picking up leaks in the scrap yard, and he also ran to pick up leaks, but there was not even a funnel.

When I came over today, I naturally didn't want to pick up the leaks, so I wanted to buy some scrap iron and scrap copper.

As soon as he got off the horse, the people from the recycling station greeted him.

Despite the fact that this is just a small recycling station, there are 3 people at work.

A weighed receiver, a bookkeeper and cashier, and a director who doesn't know what he does and sits in the office.

Seeing Chen Fan dismount at the door of the scrap station, the bookkeeper sitting at the innermost part of the store department immediately shouted, "Director, Mr. Chen is here." ”

And the uncle who was in charge of receiving the goods at the door had already greeted him, grinning as if he had seen a relative, "Teacher Chen is here, I heard that your article was published in the newspaper?" ”

This attitude is very different from last time.

Chen Fan estimated that he was semi-literate, otherwise he would not even be able to distinguish between newspapers and magazines.

This thought flashed through his mind, and then he retracted his thoughts, took out a cigarette and greeted the weigher he didn't know, "Haha, it's just a little thing, even you know it." ”

I thought to myself, this time's attitude is different from last time, but how do they know themselves?

The weigher took the cigarette and laughed, "This is not a trivial matter, we also have a writer in Nanhu, and we have to beat gongs and drums before." ”

I'm still parading through the streets.

Chen Fan sighed in his heart, the smile on his face did not change, and asked, "I remember that I didn't know you before, how did you recognize me?" ”

The weigher pointed to the little mare next to him, and said with a smile, "The whole commune is not worthy of a saddle for you to ride a horse, and the horse is so handsome, and the age is about the same, this can still admit mistakes, that is called strange." ”

Chen Fan turned his head and looked at the little mare, it turned out that you betrayed me?!

The little mare snorted, "What?" ”

At this time, two more people came out inside, Chen Fan immediately handed over two cigarettes, and smiled at one of the uncles in a Mao suit, "You should be the director, hello, I want to buy some scrap iron and scrap copper, I don't know if it's inconvenient." ”

The weigher immediately introduced on the side, "This is Director Fang, this is Accountant Wu." ”

Chen Fan greeted again, "Director Fang, Accountant Wu." ”

Director Fang took the cigarette and smiled on his face, "Teacher Chen is polite." I don't know how much scrap iron and copper you are going to buy? ”

Chen Fan smiled, "It's not much, just a few catties of the same, but it's best to have better quality." ”

Director Fang didn't say a word, turned around and walked inside, "A few catties must be there, the best scrap iron is the iron from the ship repair factory, especially from the engine room, which is harder than the deck iron, the quality must be guaranteed, copper, do you want copper or brass?" Only brass is large, and copper is only small. ”

Chen Fan followed him and was about to go to see the waste piled up in the corner of the store department, but found that Director Fang was still walking inside.

He suddenly came to his senses, no wonder the last time he came, he didn't have anything, he co-authored a scrap recycling station, and he even made a small warehouse???

Passing through an office and out the back door, there was a small courtyard with a small room in the middle of the courtyard.

Director Fang directly took him to the front of the room inside, and while unlocking it, he said, "The higher value is stored here, and it is generally not for takeaway, it is all sent to the county, and then handed over by category, and then approved by the county head office to the corresponding units for use. ”

He pushed open the door, glanced back, and said with a smile, "But others can't, Teacher Chen must be an exception, and the leader has nothing to say when he comes." It's rare to come once, you come in and see by yourself, take what you want, and settle the accounts together when the time comes. ”

Chen Fan handed over another cigarette with a smile on his face, "Thank you, thank you." ”

I'll believe this kind of scene.

Following Director Fang into the door, Chen Fan turned his head and looked around, the room was not big, but there were a lot of things.

The iron sheet in a box does not look simple, knock it lightly, jingle, obviously the toughness is not bad, and the iron sheet is still stained with a layer of black oil that has not been wiped clean.

There were also several shelves with copper pieces that appeared to have been removed from the machine, and among them was a bundle of copper wire, which, although it had been scrubbed, could still see the stains in the seams, and it was not known which machine it was.

Although he had studied mechanics, he was not familiar with the old antiques of this era, and he really couldn't tell what the parts were.

Director Fang was smoking a cigarette on the side, and he didn't say much, letting him choose by himself.

Chen Fan's eyes fell on the half box of old books in the corner again, and he turned his head with surprise on his face, "Director Fang, can you buy these old books too?" ”

Director Fang smiled, "It's still the same sentence, others can't, Teacher Chen can." ”

The corners of Chen Fan's eyes twitched slightly, the last time I came, the people in your store department didn't say that.

When I asked about old books, they said they didn't.

However, he could hear that compared to just now, Director Fang's words at this time seemed much more sincere, it seemed that there should be something about these old books, so he asked curiously, "Aren't these old books pulled to make paper?" ”

Director Fang shook his head and said with a smile, "These old books are not the same as waste paper, they should be sent to the county waste company first, combined with all the old books from other communes, and let the library select them first, and if they don't have them, they will be put into the library, and then let Xinhua Bookstore choose them again."

Some people in the county have no jobs, and they are too old to enter the factory, so they are attached to the street office, allowing them to open used book stalls to rent books for a living, their superiors are Xinhua Bookstore, and the books are basically purchased from there, but the new books are too expensive, even the villain's books cost one or two cents a piece, and most of them are often one or two yuan, or even four or five yuan, so the street will discuss with the scrap company to use the old books and wholesale them to them.

In the end, the rest of the people who didn't want it were pulled to make paper. ”

Chen Fan was suddenly stunned, and at this time he also vaguely remembered that when he was a child, he heard his grandfather say that a cadre in the village who went out used to work in a scrap company in Yunhu, and he had disposed of old books at that time.

Unlike what many people on the Internet said in later generations, in this era, you are not allowed to read this, as long as it is not a very special book, such as Lanling Xiaoxiaosheng's works, in fact, no one cares.

Ahem, in fact, if you really want to see it, no one cares, and it's not that there is a grudge, who would do anything to harm others and not benefit themselves?

Of course, if there is a hate, say something else.

But one thing is true, there are really few types of books in this era, because the creation of literary works has almost come to a standstill, only a few writers are still creating, and the subject matter is very simple, which gives people a feeling of restricting reading books.

Knowing that these books could be bought, Chen Fan immediately pounced.

Then he was disappointed.

There are not many books, only half a box, and most of them are primary school textbooks, which are useless at all, if it is a middle school textbook, he is willing to buy it back for Jiang Lili and them, and the primary school textbooks are still forgotten.

Then there are some literary works of the era that have been turned over, and they are not of much value.

However, in line with the principle of never the Air Force, he still tried to dig out two books from it.

One is a collection of songs, the kind with sheet music, which can be used to practice the harmonica.

The other book turned out to be a martial arts cheats, have you ever heard of Tai Chi? !

Chen Fan flipped through it curiously, and he didn't know if there were any secret tricks in the "Taijiquan Exercise" published in 62?

(62 years version of Tai Chi exercise, priced at 0.6 yuan)

Captain Xiao passed on his Xingyi big gun strength, which had already made him eat it thoroughly, and now he can only buy some books to see for himself, which is also embarrassing.

However, he himself knows that this kind of publicly published "martial arts cheats" is almost impossible to have tricks, and there is really no one in this book, just some moves and footwork, which do not involve strength, so you should broaden your horizons.

I took two books, picked out some pieces of iron and copper of different sizes, and went out to pay the bill.

The weigher in front of him did not distinguish between copper and iron, and threw it directly on the scale, and reported a number at random, "10 catties." ”

Chen Fan glanced at him and determined that copper and iron were at the same price?

Glancing at the scales again, good guys, the scales have been pushed up to the iron bars above, and it is estimated that there will be at least two catties more.

Director Fang turned a blind eye to the scales on the scales, and waved his hand on the side, "Xiao Wu, open a ticket, 10 catties of scrap iron out of the warehouse." ”

As for the two books, he didn't mention them, and he also gave a free sack with a few patches, and put the copper and iron in one go.

In this regard, Chen Fan could only express his kindness, but he accepted it gladly, took out 3 yuan and left with a sack.

Then I sighed in my heart, scrap iron is really expensive.

……

After buying things, he rode to Team 7 on horseback.

Speeding on the main road of Lujiawan, the members who were planting rice in the paddy fields on both sides heard the movement and straightened up to look.

"Yo, where is Mr. Chen?"

"He is very busy all day long, 6 teams, brigades, and communes run a few times, and he can't figure out what he has to do now."

But no one mentioned that Mr. Chen's works were published in magazines, because they didn't know about it yet.

There is a postman in the town to help publicize it, but in the production team, he only ran to the brigade headquarters, so that the news has not spread, but in two days, the whole brigade will definitely know that if it is not good, it will be famous in the whole commune, and Mr. Chen will be famous in Nanhu again.

They didn't know about the magazine, but they heard the gossip of Team 6.

"Hey, hey, haven't you heard, there was a big incident in Team 6 today."

"What's the big deal?"

"It's that female intellectual, her foot was punctured when she planted seedlings."

"What's the big deal? The year before last, I had not yet gone to the field, and I stepped on a stone, and it was not that a big cut was made, which delayed me for several days. Male workers are given 12 points and female workers are also 10 points for a day of rice planting, which is a heavy loss. ”

"It's not like this, she can't tell, I'll tell you. Do you know, Mr. Chen hugged that female intellectual. ”

As soon as the words fell, there was a sound of surprise "ah".

Dozens of people around looked at the man, and someone immediately shouted, "Hurry up, how can you get fat?" ”

"It's which female intellectual, didn't she pierce her foot, and then it happened that Teacher Chen passed by, he didn't say a word, he rode over on a horse, it was a ridge, not even a meter wide, he dared to ride a horse, you said how anxious he was.

That's not all, when he got to the edge of the field, he jumped down all of a sudden, ran to the field without taking off his shoes, picked up the female intellectual, and rushed back, you say, is there something wrong with them?! ”

There was a sudden murmur around.

"Is it true that you don't take off your shoes?"

"Can you ride a horse on such a narrow ridge? I'm afraid it's not nonsense. ”

"There are so many people when planting seedlings, even if they have something, they won't hug it in public, it must be fake."

At this time, the eldest sister who was the first to poke out the gossip finally seized the opportunity and shouted loudly, "Fake, the third girl of Lao Wang next door to me is married to Team 6, she was next to her at the time, and I went back to my parents' house at noon today, and I just listened to her." Teacher Chen took off his shoes before going to the field,......"

Another eldest sister quit, "My third sister went to Team 6 today, and I heard it back with my own ears, so there can be a fake, it must not have taken off." ”

"Take it off!"

"I didn't take it off, I definitely didn't take it ......off."

"Absolutely out of ......"

……

Chen Fan didn't know that half of the team was discussing the question of whether he took it off or not, so he rushed to the 7th team quickly, asked them to buy more than 3 catties of fresh milk from Captain Tang Xianjun, gave one dollar, and then carried the milk in a bamboo tube home and prepared to make a cake.

(End of chapter)