Speaking of single-chip microcomputer, we can't fail to mention 8051, this 51 series single-chip microcomputer, widely used in industrial control systems, anyone who learns electronics, there is no 51 series single-chip microcomputer, and even in 2020, it is still a common single-chip microcomputer, although the technology is backward, but it is enough to use it.

But now, a piece of 8051 single-chip microcomputer is too expensive, the number of domestic imports is also scarce, what can be bought on the market, mainly 8031 single-chip microcomputer, this single-chip microcomputer is actually the previous generation model of 8051 single-chip microcomputer, all languages are universal.

It's just that, because 8031 is a previous generation model after all, this model does not have built-in PROM memory, so, if you want to use this kind of single-chip microcomputer, you must also match it, such as the 74LS373 next to it, EPROM2716, these chips can together form a minimum single-chip system, just these three chips together, there are more than 100 yuan.

Brother Zhenhua said that to be an ordinary inverter, the output is not a pure sine wave, but a square wave, which is used to simulate a pure sine wave, which is really a shame, so in order to best create a pure sine wave, a single-chip microcomputer must be used. I learned the programming of the single-chip microcomputer by the way, but there is no special equipment in our factory, and the program is burned by Brother Qiang. ”

Even in later generations, many cheap inverters are square waves, or corrected sine waves, and you have to kneel when you encounter inductive appliances, such as refrigerators and washing machines. Only pure sine waves can be perfectly simulated, Qin Zhenhua is a person who pursues perfection, and that day he found that Wang Erzhu was tinkering with a few thyristors, and decided to do the best solution.

Now, Professor Wang Limin, who was amazed at this thing, made Qin Zhenhua feel strange: "Hey, Professor Wang, you are the dean of an academy, with a high position, how can you be the same as Grandma Liu who entered the Grand View Garden?" What's so strange about that? ”

"No, no, this thing, it's too advanced!" Professor Wang Limin said: "This is called high-tech! Erzhuzi, your overall design drawing, and program, can you give me a copy? ”

"What's so hard about this?" Wang Erzhu said: "If you want, when you go back to a machine factory, I will find it for you." ”

"Wait." At this moment, Qin Zhenhua opened his mouth and said, "No, I think, this matter is not so simple, Professor Wang, what are you going to do?" We have a right to know. ”

"Our Capital Institute of Technology has established a school-run factory. However, what this school-run factory wants to produce, there is no specific plan for the time being, some people say that washing machines, TVs, etc., but those investments are too large, our school can't afford it, and we want to make some small products, and moreover, it must reflect the level of our university, I think, this is very good. ”

In that year, the vigorous production movement began, and the school was not far behind, in addition to the "national steel-making", in the school also had to "learn engineering" and "agriculture", that is, at that time, the school set up a "school-run factory" and "school-run farm".

At that time, the state also had relevant bills, such as the "60 Articles on Working Methods (Draft)": If possible, universities and secondary schools in cities may jointly set up affiliated factories or workshops by several schools, and may also enter into contracts with factories, construction sites, or service industries to participate in labor.

However, in those days, the school-run factory was just to catch the ducks on the shelf, and some school-run factories made screws, but the spacing of the threads was uneven, and the hexagonal shape of the nut was asymmetrical, and finally became a waste, and the school-run factory not only did not bring production value, but became a laughing stock.

In 1983, the State Council approved the Ministry of Education, the State Planning Commission, the State Economic Commission, and the Ministry of Finance's "Instructions on Further Carrying Out Work-Study Activities" and "Interim Regulations on Work-Study Activities in Primary and Secondary Schools Across the Country", further clarifying that school-run factories are important bases for work-study programs. Pay attention to economic benefits, but to educate people as the fundamental purpose. Internally implement enterprise management and independent economic accounting.

It is the internal enterprise management and independent economic accounting that can be regarded as making the school-run factory really on the right track, as for the university, the school-run factory is of great significance, it is the base of the combination of teaching, scientific research and production in the school.

Students can carry out teaching practice and other practical activities in small class projects, so that students can connect theory with practice; At the same time, it is also possible to develop and produce products according to social needs, increase school income, and improve the conditions for running schools.

Don't look at the Capital Institute of Technology belongs to the colleges directly under the ministry, but in this era, everything is to look at money, if the school does not have its own small treasury, does not have its own means of getting rich, then the school can not develop, after all, it is still the era of free college, no need to pay tuition, the school can not create income through tuition.

"Professor Wang, Dean Wang." Qin Zhenhua straightened his face: "So, for the sake of the development of your Capital Institute of Technology, you plan to take the results of Wang Erzhu's hard work for yourself like this, and directly take the results of Wang Erzhu's hard work for yourself?" Isn't that good? ”

"Brother Zhenhua, I..." Wang Erzhu wanted to say, I don't care, Professor Wang leads an academy, and he does this for the benefit of the entire academy, and I can make my own contribution, which is also right.

This is Wang Erzhu's inner thoughts, after all, this is just something he developed in his spare time, but thinking about what Brother Zhenhua said, there must be a deep meaning, so he didn't say it.

"Hehe, Zhenhua, let's say, what conditions do you have?" Wang Limin asked Qin Zhenhua, Wang Limin was already very familiar with Qin Zhenhua, and knew that when he said this now, it was just that the momentum came up again.

Cao Jianli just watched there, not speaking, as if she was thinking about something else, as if she was thinking about something else.

"For every product sold, 20% of the commission will be given to Erzhuzi, as the patent fee for his invention, the term will be set at 20 years, our country has promulgated a special intellectual property protection law, Professor Wang, the importance of intellectual property rights, start with your institution."

Wang Limin's face suddenly turned black: "Impossible." Per cent? You guys are robbing! Two percent is about the same! ”

"Okay, then two percent, Professor Wang, if you say it, it's just spilled water, don't you admit it."

In an instant, Wang Limin's face turned red again: "This, this..."