Lin Gao Qiming

Chapter 1955 Application of Sorting Machine
After setting up the sorting machine, Feng Nuo turned on the switch of the machine, and the cards began to be sorted.He told Li Jianai and Qian Yuzhi to watch the machine, and went back to the computer room with Feng Shan to check the operation of the server.

Around noon, Feng Nuo returned to the workshop.The cards had been sorted, he looked at his watch, it was a little over 2 hours.Pretty fast for sorting 1 cards.But Li Jianai and Qian Yuzhi sat by the machine in frustration.

It turned out that no eligible cards were found.

This is very strange.Feng Nuo thought for a while, and then looked at the situation of the sorting machine.He noticed that there were no cards in pocket No. 9, but there were several cards in pocket No. 10, which indicated that the cards were dumped on the last level.He picked up a card in card pocket No. 10 and looked at it. —these cards had previously been printed on the top with the numbers corresponding to each column by a decoding machine.

"2750. This householder is not named Lin Guanghui." Feng Nuo said. "You check, 3354, this is Lin, no problem. Then 2567, 2750."

"Lin Guanghui, this person's name is Lin Guanghui..." Li Jianai was angry and funny.

"Did you make a mistake when punching the hole?" Feng Shan asked.

"Humph," Feng Nuo snorted. He thought that this person was probably a refugee accommodated in the Guangzhou Refugee Camp, so he included the word "Guang". Bar.

"Origin: 12216, this is Fujian. Occupation: Farmer. Status: Military household." - It seems that this household probably has nothing to do with the Baitulin family.

Based on this information, Li Jianai found out the "Permanent Resident Registration Form" of Lin Guanghui's family members in the stack of "Fujian" and "Farmers" in the household registration information form, copied the necessary information, and wrote it into a supporting document .An explanation of the information review process was added at the back, and Feng Nuo also signed it.

The elders are now consciously solving the problems they can see. ——Whether it is a matter of one-third of an acre of land or not, it is a matter of the Senate, and that is also a matter of oneself.

After everything is written, Li Jianai is ready to send out the certificate.

"Ganai, you don't have to come back. Go to Tiandi in the afternoon to go through the transfer procedures and bring the file." Feng Nuo ordered.

Afterwards, he asked Feng Shan and Qian Yuzhi to sort out the cards and count the number of people according to household registration location, surname, origin and occupation, and then compared the results with manual calculations to formally test the prototype of the sorting machine.

A week after officially switching jobs, Li Jianai received a letter from a mailbox number when he returned home.Without looking left and right, she immediately picked up the envelope and quickly stuffed it into her pocket.

In the evening, Li Ganai couldn't wait to find an opportunity to open the letter. There was no letterhead or signature inside, only a few simple instructions in secret words.She carefully checked several secret notes, and only after confirming that they were correct did she suppress her inner excitement and destroy the letter.

When Li Jianai arrived at the contact point indicated in the letter as scheduled, his jaw almost dropped from shock. He did not expect that Team Leader Jia, who often came to the electronic equipment workshop to instruct them on technology, turned out to be his upline.She never noticed it.

Jia Ben didn't show any surprise, he didn't explain why he cut off contact with her - Li Jianai naturally didn't ask - he just asked Li Jianai about the situation during this period, and accepted the work report she submitted and personal summary.After instructing her to "do everything according to the previous policy", she left in a hurry.

The next day, when Li Jianai returned to the workshop full of energy, Feng Nuo was instructing Feng Shan and Qian Yuzhi to use the sorting machine and wrote a lot on the blackboard.Seeing Li Jianai coming back, he nodded for her to come and listen together.

The test of the classifier is very successful, but the inability to handle the "or" condition is indeed a big limitation.Regarding how to improve, Feng Nuo already has a general idea in his mind, but today he will use this as an example to give a lesson to the students.

This has actually involved the core principles of computers.What he wants is not a simple operator, but a programmer who can actually use it.

"Today, let's analyze theoretically what kind of problems our classification machine can solve and what kind of problems it can't solve."

"First of all, sorting. There is no doubt that this problem can be solved. We align the card reading touch rollers on the 10 card reading units with the 0-9 in the same column, and the cards will be pushed to the In the 10 card pockets, when the cards are reassembled into a stack by hand, the cards are sorted by the size of this column of numbers."

"Secondly, single-condition classification. 'Divide all cards into two stacks of male and female'. This can be done completely. You only need to open 1 card reading unit and align it with the 0 hole in the gender column. Gender is 0, that is, female. would be pushed into the card pocket, men would not."

"Third, multi-condition classification. This requires specific analysis. Let me ask you a few questions, and you can think about how to use the classification machine to complete it. The first question, assuming that we now have household registration cards for the entire East Asian region, I want to Find out the card of Hainan Lingao Calai Commune, how to operate it? Yuzhi, tell me."

"Let the card reading units No. 1~7 sequentially screen out the cards whose household registration is 1001014." Qian Yuzhi replied.

"Correct. Kanai, the second question, I still have the household registration card for the entire East Asian region, and now I want to find out the cards in the Sanya region except slaves, how should I do it?"

"The Sanya region includes two county-level units, Sanya Yulin, code 10011, Sanya Tiandu, code 10012, and its subordinate slave area code 1001299."

“让1~4号读卡单元依次筛选出户籍所在地前4位为‘1001’的卡片；然后让5号读卡单元把户籍所在地第5位为‘1’的卡片推入5号卡袋，这些是三亚榆林的卡片；让6号读卡单元把户籍所在地的第5位不是‘2’的卡片推入6号卡袋，此时机器上剩余的是三亚田独的卡片；让7号读卡单元把户籍所在地第6位不为9的卡片推入7号卡袋，这些是三亚田独11~89公社的卡片；让8号读卡单元把户籍所在地第7位不为9的卡片推入8号卡袋，这些是三亚田独90-98公社的卡片，此时机器上剩余的就是三亚田独的奴隶卡片了。合并5号、7号、8号卡袋的卡片即为所要的结果。”李加奈考虑了半天才回答。

"Very good, Kana, that's right." Feng Nuo was a little surprised.

"Feng Shan, now I have all the household registration cards of Lingao. First, find out the person named 'Liu Si' who lives in Shisancun and Bairen Commune; second, find out the people who are originally from Fujian and Hainan. You Try these two questions."

"Neither of these two problems can be solved." Feng Shan replied after thinking for a while.

"why?"

"The reasons are different. The first problem cannot be solved because the card reading unit is not enough." Feng Shan said.

"To ensure that the name on the card is "Liu Si", it is necessary to ensure that the column storing the name on the card is the 8-digit area code of "Liu Si", which requires 8 card reading units to exclude unqualified cards, so to speak, reach All the cards of the ninth card reading unit are named "Liu Si";"

"However, at this time, there are only two card reading units left in the classification machine. Bairen Commune is '11', and Shisan Village is '18'. You can use card reading unit No. Cards that are not '9' are excluded, and the remaining ones on the machine are 'Liu Si' from 6~1 communes. Among them, you can use the No. 11 card reading unit to push the card with the 19th '10' into the card pocket. This is 'Liu Si of Bairen Commune', but not enough to sort 'Liu Si of Shisan Village' from the remaining cards. So this application cannot be completed."

"However, if there is another card reader unit on the sorter, this application can be solved."

"Well, good. What about the second question?"

"The second problem does not use all the card reading units, but our current sorting machine cannot be solved by design."

"Tell me about it."

“原籍海南，代码为100，原籍福建，代码为122。我们可以首先用1号读卡单元选出户籍所在地第1位为‘1’的卡片。但是之后如果我们选择推出第2位为0的卡片，则就不能继续筛选第3位也是0的卡片，会导致海南（100）与台湾（101）、济州岛（102）的卡片无法再分离；如果我们选择推出第2位不为0的卡片，则会导致福建的卡片被推入卡袋，无法进一步与其他卡片分离。”

"Very good. This is the problem Chief Zhong said about not being able to do 'or calculations'. He said it in a rather general way. Now let's analyze theoretically why we can't solve this problem." Feng Nuo walked to the blackboard and said.

"The so-called theoretical analysis is to abstract the specific questions like the ones I asked you before into a general question for research."

"When we are looking for any card, there are always a series of conditions to describe the target card. This series of conditions is called 'proposition'. These conditions are reflected in the screening method, that is, whether a certain hole on the punched card is perforated. Note, that is, that there are two possibilities for each proposition, yes and no, which we call 'true and false'."

"Now we have two concepts, proposition, true and false. In the end, whether a card is the card we want is often limited by many conditions. Each condition is a proposition, so our ultimate goal is to be determined by many A new proposition composed of propositions, we can call it a 'compound proposition', and each condition that makes up a compound proposition can be called a 'simple proposition'. Naturally, a 'compound proposition' also has 'true and false'."

He wrote on the blackboard: propositions, true and false, compound propositions, simple propositions.

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Next update: Volume 60 - Guangdong and Guangxi Raiders Chapter [-]

(End of this chapter)