Early in the morning of the second day, Duan Yun came to the product technology research and development center and held a small meeting.

The main purpose of this meeting is to arrange the next product research and development plan.

Before the Walkman is officially launched, the main work of the R&D center is to put the final polish on the product to ensure that there will be no major quality problems after the product is launched.

In addition, Duan Yun officially held a meeting, and there was an important task that needed to be assigned to the product research and development center, that is, to develop a repeater in the technical technology of the colorful walkman.

Although Duan Yun's Walkman and tape recorder products are very suitable for learning foreign languages, in later generations, the most popular and popular foreign language learning tool is undoubtedly the repeater.

Since Duan Yun has labeled his Walkman product as a "weapon for learning English", it is always necessary to reflect this strength in the product function.

In the impression of the future, the repeater machine was sold very hot, and this product has also become a necessity for many primary and secondary school students to learn foreign languages, especially the post-90s and post-00s students, basically everyone has a repeater.

Speaking of the repeater is on the basis of the portable tape recorder, the addition of microprocessor chip, digital storage chip after the formation of a multi-functional language signal storage device, he is in the tape playback at the same time the analog signal into a digital signal, stored in the digital memory chip, when the state is repeated, and then the signal in the digital storage is converted into an analog signal, through the power amplification, the sound is restored by the speaker.

In principle, this kind of device is not complicated, the key lies in the research and development of microprocessor chips and digital memory chips, and now Duan Yun has mastered the technology of Walkman production, and only needs to add a chipset on the basis of Walkman.

Speaking of which, the first person to invent the repeater was Professor Zhong Daolong, who admitted that he was the vice president of a military academy in Nanjing, and that his invention of the repeater was only a by-product of his study of English.

Professor Chung began learning English at the age of 45, became a spoken translator a year later, studied English for three years, listened to 17 tape recorders, and invented the English repeater for himself and his students.

In 1992, Zhong Daolong was transferred to a college in Nanjing as the service dean to focus on teaching, when he first took office, the school's National University English Level 4 pass rate was only 40~50%, the analysis is that the quality of students is not very good, and the school has no foreign teachers, students learn more difficult.

When he first learned English, he changed 17 tape recorders in three years, and then he began to think about how to keep approaching the road belt is indeed very expensive, how to hold down a key and repeat a sentence.

After three months of repeated thinking, he finally invented the repeater, he applied for a patent for this unexpected achievement of his own, and became the first person in China to invent the repeater.

In fact, with the current level of domestic semiconductor electronic technology, the memory chip cannot store too many voice and digital signals, but it is no problem to store a few sentences of spoken English.

However, in the early stage, Duan Yun also planned to continue to sell this kind of walkman without repeating function, because he wanted to apply for a patent for the Walkman technology at home and abroad, and after the patent came down, he was in large-scale production, and now he needs the personnel of the product technology research and development center to make a sample of the repeater first.

"Manager Duan, do you mean a module group that adds a voice memory chip to the Walkman and can play this voice repeatedly through a single button?" In the conference room of the product R&D center, after learning about Duan Yun's R&D requirements, Zhao Xuewu asked suspiciously.

"That's right, that's what it means. Duan Yun nodded, and then said: "Considering that adding this module group will occupy a certain amount of space, I need you to redesign a walkman with such a function, you only need to press a button, you can play a voice recording repeatedly, in addition to realizing this function, but also to ensure the durability of the new sample machine, such as the key switch must be worn resistant, more reliable originals, the cost price can be increased, but we must ensure that the machine keys are more than 10,000 times without failure." ”

"More than 10,000 times without failure?" Hearing this, the five professors present suddenly showed surprised looks.

"That's right, because this key may be used many times frequently, and if the key components are of poor quality, there may be quality problems of wear and leakage, so this is also one of the design indicators I focus on. Duan Yun glanced at everyone, and then said: "Actually, this requirement is not high, I originally hoped that 100,000 keys would be fault-free, but considering that this is too difficult, I can only relax some standards, but all in all, the stronger the button for repeated playback, the better." ”

"Manager Duan, we will do it according to the plan you proposed, but I just want to ask, why did we add such a component to our Walkman, and is there any practical use?" Zhao Xuewu asked suspiciously.

"Yes, there shouldn't be many people who use the function of voice storage and restoration, right? Besides, you only need to store a few words, isn't this function a bit chicken?" Yang Xiuchun also said at this time.

"This can be practiced, and I also get inspiration occasionally......" Out of the secrecy of the excellent creative patent of the repeater, Duan Yun doesn't want to disclose his true intentions now, not because he can't trust these five old professors, but out of a kind of caution, just listen to him continue: " Nowadays, young people like to practice songs, and with this function, it will make our walkman products sell better, so I hope you can design a free listening product with a repeat function as soon as possible, and I hope you can also add this repeat component to our colorful brand small tape recorder, I hope the sample can be completed within a month, it should be no problem, right?"

"Okay. ”

Although Zhao Xuewu and the others didn't understand why Duan Yun had to add such an obviously "chicken" function to the Walkman, Duan Yun was the boss after all, and he should do what he should do as a technical R&D personnel.

Subsequently, Duan Yun told these technical R&D personnel about some details of the design plan of the repeater before leaving the product R&D center.

As long as Zhao Xuewu and others make a sample of the repeater, Duan Yun will immediately apply for a patent in China and Hong Kong, which is a patented product that is very likely to replace the Tianyin subwoofer and open the international market again, Duan Yun must be cautious.