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Qian Lao led Tang Xin and several new researchers to visit the design department on the third floor. The design department is mainly divided into three parts. The staff in one department measured the drawings with rulers and then recorded the data. Qian Lao Bian took Tang Xin and others to visit while patiently explaining to Tang Xin.

"What these research institutes hold in their hands is a slide rule. The slide rule can quickly solve logarithmic functions, exponential functions, trigonometric functions, hyperbolic functions, roots, and exponentiation. It is similar to the abacus you used to use." said Zhu Qianlao pointed to another group of people who were checking calculations with abacus and said. "The abacus is also a calculation tool, but it is a rough calculation and it mainly plays a supplementary role."

"I'm still thinking, how much data can be calculated with an abacus alone? Are there other calculation tools?" Tang Xin asked.

"Smart little guy, you're right. You can't calculate such a huge amount of data just by relying on the abacus. Let's go over there and have a look." He said and led everyone to take a few steps to the side. The staff here were tapping. The machine in his hand seemed to Tang Xin to be similar to an ancient typewriter, similar to the earliest foreign machine typewriter that he had seen in movies.

"This is a hand-operated computer." Tang Ma explained in Tang Xin's ear.

"Hand-cranked computer?" It turned out that Tang Xin's knowledge was shallow. She had never seen this, let alone heard of it. Her only impression was of electronic computers.

"Yes, hand-operated computers can generally only do four arithmetic operations, square numbers, cubic numbers, square roots, and cube roots. If you need to input trigonometric functions and logarithms, you need to look up tables. I will teach you how to use them when I have time." Tang Mom said to her daughter.

Tang Xin was still very curious. Can that large weapon be researched with just this? We don’t even have computers or even calculators, so we can’t help but lament how powerful the Chinese people are.

Seeing Tang Xin's doubts, Mr. Qian smiled and said to Tang Xin: "Tangbao, you don't think that we can complete Miss Qiu's design just by relying on these, right? We also have a secret weapon." Mr. Qian Winked at Tang Xin?

"Secret weapon?" Tang Xin suddenly became energetic, so she just said.

"Come on, I'll take you to see it."

Mr. Tang then led everyone out of the laboratory and towards a room on the side. Before Tang Xin reached the door, she heard a huge roar, the sound of a fan spinning.

That's it. Tang Xin looked at the big words "Computer Room" hanging on the door and felt like the dust had settled.

As Mr. Qian pushed the door open, he was greeted by a huge room with rows of electronic instrument cabinets neatly arranged. Staff members in white coats sat in front of the electronic cabinets and were constantly operating. Or record data. There was a huge roar inside that made it hard for people to hear what they were saying. The noise was too loud and it was really a test for the staff. However, the staff here were not affected at all and continued to work seriously. , Tang Xin really admired him.

Looking at some familiar and unfamiliar monitors on the table, Tang Xin really felt like traveling through time and space. Did our country have computers so early? She was still a little uncomfortable seeing this high-tech product all of a sudden. Although today's computers are huge and noisy, they can't compare with the compact and convenient mobile computers of later generations, but Tang Xin was still absolutely excited.

Because it was too noisy, Mr. Qian led everyone out again. It was not the first time for everyone except Tang Xin to see computers, but they were still very excited to see such a large group of machines.

"This is a computer. It is the 104-type computer newly developed in our country. It is now in use. However, in terms of accuracy, it is still not as good as a hand-cranked computer. So your main tools in the future will also be hand-cranked computers. Tangbao Ah, you have to ask your mother to teach you quickly." Qian Lao said to Tang Xin after he came out.

"Teacher, don't worry, I will teach her as soon as possible." Tang's mother assured the teacher.

"Grandpa Qian, I will also study hard. Try to master the operation of the hand-cranked computer as soon as possible." Tang Xin also quickly promised. In fact, when she first saw the computer, she wanted to learn to operate the computer. After all, she was familiar with computers. The operation was very skillful, but after carefully observing the staff's operations, she found that the operation method at this time was completely different from that of later generations. The current operating system was also different, and her advantages could not be used at all.

"Good boy, let's go. When you get back, I'll find someone to arrange your seats and assign specific tasks to you." Mr. Qian patted Tang Xin on the shoulder happily.

Everyone then returned to the big office. Mr. Qian called over a middle-aged man in his forties, "This is Professor Deng. You can call him Gong Deng. He is mainly responsible for allocating everyone's work. Normally everyone If you have any problems at work, you can talk to Gong Deng. Our Gong Deng is an expert in this field." Mr. Qian patted Gong Deng on the shoulder, very affectionately.

"Mr. Qian has won the prize. I still have a lot to learn. We are all elites in this field. Let's learn and make progress together. If you have any academic issues in the future, you are welcome to discuss them with me." Deng Gong raised his hand. He raised his glasses and said to everyone with a smile.

Several people also greeted Deng Gong one after another and introduced themselves.

"Come on, some of you come with me, and I'll introduce you to all my colleagues." Deng Gong said and nodded to Mr. Qian, and led a few people to the work area. Mr. Tang and Mr. Li also turned around and returned to their own place. 's office.

Deng Gong clapped his hands, and everyone in the office stopped what they were doing and looked at him. Deng Gong introduced the new people to everyone present, and highlighted Tang Xin, hoping that everyone could take care of them.

The researchers were still a little surprised by the appearance of the child Tang Xin, but everyone has been smart since childhood, so they were more accepting of meeting a smarter child, and they all expressed goodwill towards Tang Xin. He also said that he would take more care of him in his future work.

Tang Xin also thanked everyone generously for their kindness and thanked all the uncles and aunts with a smile, which won the favor of everyone.

Then Deng Gong arranged a seat for them. Of course, Tang Ma sat next to Tang Xin. Knowing that Tang Xin did not know how to use a hand-operated computer, Deng Gong deliberately did not arrange work for the mother and daughter in the morning, so that Tang Ma could concentrate first. Teach Tang Xin how to use a hand-operated computer.

In fact, it doesn't take that long at all. The use of the hand-cranked computer is actually not complicated. It only takes a while for Tang Xin to get started. However, the hand-cranked computer has its limitations after all. When encountering complex problems such as trigonometric functions and logarithms, Need to look up the table. If there were parentheses in the calculation, she would have to shake it forward and back a few times, and record it with a pen and paper. Tang Xin really felt that it would be faster to let her check the calculation with a pen.

In this way, Tang Xin started her work at the base.