Author: Zhong Changwei
suddenly wanted to write this story today, using words to thank this old man who changed my life. From him, I got the sweetness of the sweet, the superb technical knowledge, the truth-seeking thought and the spirit of never-ending pursuit. Also write down some of your own stories to share with others!
Deng Sheng's full name is Deng Huangwen. He is a Hong Kong native. He studied in the UK in his early years, and then worked in the United States before returning to Hong Kong. Mr. Deng often talked to me about some stories from the past. Their family used to raise ducks in Hong Kong. Born, he often spends time with many fishermen. He and Huo Yingdong went to the same school, but they don't know each other. Later, because there was no Chinese school in Hong Kong, he went to study at his aunt's house in Tainan. He read some Tainan language, many of which he couldn't understand at all. So he went back to Hong Kong to study in an English school, and his English came out in the same way. In Deng Sheng's view, English is as familiar as his mother tongue;
Deng Sheng jokingly told me that he still has no real diploma, the main reason is that the department is too chaotic. Deng Sheng was very difficult during his studies in the UK. Many people in Hong Kong worship the study of art, so he followed others and chose to paint. Unexpectedly, he could not make a living at all, so he changed his studies to electronic technology and mechanical manufacturing; thus he embarked on a difficult and tortuous road. The school achieved excellent results, and was later admitted to the most famous Bell Laboratory in the United States, thus achieving the most glorious peak of his life;
Deng Sheng was mainly engaged in the development of equipment in the military field in the United States, mainly responsible for the arc vacuum processing technology. At the time, only Germany had such technology. For example, the wheels of a train must be flexible on the inside and rigid on the outside. The outer rigidity mainly ensures that the friction between the wheel and the guide rail does not cause excessive loss, and the inner flexibility ensures that the rigidity should not be too rigid and quenched; he told me, The wear amount of the armored vehicle track they studied in the field is an error of 0.1mm in one year, which is very difficult to achieve with the current technology.
In the laboratory in the United States, many Chinese are hired. The main reason is that the Chinese in the United States are the most hard-working and specialized in research. At the same time, due to the relationship between the Chinese, it is very convenient to study with each other, and the lifestyle and communication are also very good; but In the laboratory, there are relatively few Chinese who can enter the core technology research, mainly Europeans and Jews, which are directly related to the state secrets of the United States. However, their salaries are very impressive. His salary is 40,000 US dollars, which is a very high income in the United States.
Deng Sheng has been married three times. The first time was with a Spanish classmate. Later, he broke up because of his diet. Because Spaniards like to eat sweets, this daily life made him very uncomfortable; the second marriage was An American who finally gave up this life due to cultural differences and nationality; his third marriage came after he returned to Hong Kong, and he has a son and a daughter; his son is 1 year younger than me , his daughter is 7 years younger than me; because of his late marriage, his children are about the same age as me. He also had a confidant, whom he met in the United States. She was a person from Hubei Xiaogan. He painted a picture for her and framed it. This picture followed him through half his life. I still remember that painting deeply. A very beautiful woman was wearing an old-fashioned military uniform, with an octagonal red army hat, a Buick pentagram on the string, two braids at the back, and two small dimples deep in the belt. The smiling face is so vivid and realistic that I really admire his level of depiction.
Deng Sheng’s return to Hong Kong was caused by a very profound story. One year he traveled to Taiyuan, Shanxi, China to purchase a batch of resin oil. At that time, he took a helicopter to inspect the entire forest and then got off the plane and turned it into a car. He was surprised. It was he who saw a lot of people watching the car, including adults, children, men and women; when Deng Sheng saw these people, he was shocked. It turned out that they had never seen a car before, and he always felt that this thing did not know what it was. Things, why can they still move; he was distressed by the poverty of his homeland, which turned out to be so backward.
After many difficulties, he finally returned to Hong Kong. At that time, Hong Kong was developing very fast, and everything was changing. Shenzhen also began to implement reform and opening up. Many manufacturers have established experimental factories in Shenzhen. Deng Sheng founded in Hong Kong. He went to the company three times, but failed several times due to poor management, which also made him disheartened. The last time he founded a research and development company in Zhuhai with one of his teachers (Hong Sheng), but later because of the long research and development cycle It led to bankruptcy, and finally one of his employees founded a battery production company in Shenzhen, and successfully became the largest mobile phone battery manufacturer at that time. Deng Sheng was invited as a technical consultant. Fortunately, I entered this company at that time, and Deng Sheng personally recruited me, which enabled me to learn a lot of important technical knowledge from him in the future.
Talking about this process, I still remember that it was the day near November 1998. It should have been September 29. I came to the application desk of this company and was brought to Deng Sheng's office by a clerk. When I came to him, I felt that he was very friendly and very harmonious; he asked me how old I was this year and whether I had worked in this field before. I answered them one by one and told him that I was looking for this job for the first time; I showed him my resume and some documents I had made before. He read each document very seriously, and finally took out a document and asked me, did you draw this picture, I told him that it was used by me Handmade; finally he asked me, are you sure you made this drawing yourself, I told him that this drawing was indeed made by me, and I could redo an identical drawing for him; Deng Sheng acquiesced He lent me his plotter because he used a T-square, so I was not used to using it at first. Later, Deng Sheng taught me how to use it, so I was very proficient in drawing the plane. The axonometric drawing of the impeller of the power fan was drawn for him. Because it uses a plotter, it is more accurate and beautiful than the original; Deng Sheng was very happy after reading it. I am satisfied. A thousand dollars was very high at the time. And just like that, I got into the company I wanted so badly at the time, and got the job I wanted the most, when I was only 21 years old.
After the 11th, I officially went to work, and it was only later that I realized that my ability was not suitable for the job at all, because the experts who were recruited had at least seven or eight years of design work experience, and their ability was sufficient for any one. On the first day of work, Deng Sheng showed me some drawings and adapted to the surrounding environment. I worked in the technical department and designed some equipment with very high automation. For me who have no electrical experience In other words, everything is fresh. In this large company with more than 10,000 people, two departments are the best, one is the R&D department, and the other is the technology department. The R&D department specializes in designing some new products. The technical department is specially designed for automatic production lines for products.
I cherish this hard-won job very much. Every day in addition to work, I study, so that there is no difference between work and study. I also learn a lot of new knowledge when I go to work. To this day, I still feel those highly complex calculus, convex Both functions and lattice point functions were studied at that time, especially the research on the curve-shaped changes of functions, which made me a very professional research expert in trajectory science. When I think about it, I really feel the intention at that time; I still remember going to work at that time, Often in order to study a subject, I don’t even blink for a long time, I have been thinking about the subject research, and many times I don’t even know that other people have left after get off work. I didn’t realize it until my master (Deng Sheng) woke me up. , At this point, the master always laughs at me that I have gone crazy.
Many of my hobbies seem to be surprisingly similar to Deng Sheng. He is also very fond of various function curve changes in mathematics, so that two people with half the age difference can work together to study the various curve changes that he had headaches for many years before. , this is the most essential subject in machinery. The master always likes to give me all kinds of strange topics, and I accept it very happily every time. I feel that I have really met the cutest old man in the world. The master takes great care of me in life and takes care of me at work. But he was extremely strict with me, and he had to do it every time he came up with a question. It didn't matter if he was wrong, but he would be very unhappy if he didn't do it.
I can't deny that I admired him immensely, his style of work and his humility and harmony. Especially his extremely beautiful Chinese fonts. Later, I also wrote his fonts intentionally or unintentionally. The interesting thing is that it is almost difficult for others to distinguish whether the drawings are drawn by him or by me. From then until now, I've gotten used to that typeface, a very round and fat typeface that I haven't found in anyone else.
Looking back on my work in this company today, I have only mastered some basic knowledge. For a complete set of mechanical technical knowledge, it is just the tip of the iceberg; but it has laid a very solid foundation for my future in-depth study. ; In general, the main research is mechanical static analysis and dynamic trajectory motion, as well as basic material knowledge.
There is one thing that is probably the biggest difference between me and the teacher. This thing affects my future development, and that is the differentiation between hardware and software. It is difficult to clearly define this discussion in words. In 1999, a new trend appeared in mechanical design and manufacturing. The original design method was mainly hand-made, but the emergence of computers changed the entire industry. At that time, AutoCAD (mechanical drawing software) changed from the original DOS. There are new signs of the system, and it turns to the R12 version under Windows, which makes a huge change in the replacement of manual drawing by computers; this also makes me study the use of software every day, from AutoCAD to Pro/e to UGS software design, I put almost all my energy into it.
The master has a lot of opinions on me about this matter. He thinks that I should not put my time and energy on this, but should put all my time into the development of hardware technology, because the technical level of hardware requires a very long accumulation process. A high-level technical person can't only focus on solving software problems. I have deeply understood this point for many years. This does not explain the naivety and simplicity of the time.
In fact, the speed of mastering the software is also very fast. I only mastered AutoCAD in one month. The help it gave me successfully enabled me to quickly complete nearly 10,000 drawings in a later period of time. It is impossible to make software graphics, you can imagine the importance of software; for Pro/e, it is the oldest old family software, it is version 9.0, I believe that no one in the modern family has ever played this game. This kind of software. In order to learn this software, I paid more than a month's salary to buy a copy of this software and book. I made sure that it was still pirated. I needed to install a network card for IP registration and installation. It was extremely difficult. It took nearly a month to successfully install it on my computer. It is undeniable that the extremely powerful functions of Pro/e have made me truly addicted to 3D design.
In fact, one thing I want to say is that all kinds of things require your own research. You can't solve all problems by just relying on others' explanations. Self-study is often the best shortcut to success. There is nothing better than self-study. Let yourself grow faster; because self-study can cause many problems, and you need to solve them one by one, so that you will learn a lot of unknown content, and even the truth of failure, which I deeply understand. . A small incident had a profound impact on me. I really wanted to learn PLC (programmable control) technology. Once I asked an electrical engineer about the MOV instruction. The engineer (from Wuhan) was very contemptuous. I was told that this question is very complicated and cannot be answered at once; I was very uncomfortable when I heard it at the time, and swore that I must master this technology. In fact, PLC technology is relatively difficult. In my later PLC technology research process I have mastered the PLC technology of Siemens series and Mitsubishi series, which are two major camps in the world. So I firmly believe that nothing is as complicated as it is imagined, and it is no more than turning over a book. What is particularly important is that in my future work, as long as someone asks me a technical question, as long as I know it, I will be very humble and patient to help others, and resolutely abandon the bad habits of the old state-owned industrial technology trend!
A master once told me that technical research must avoid the entanglement of electronic technology as much as possible, because electronic technology is very difficult, which gave me a deep feeling in my later study. Learning electronic technology is a great experience for me. Thrilling and daring challenges are decided in the event. Unexpectedly, this was an important help that made up for my lack of a single technology in the later work process, which made me embark on a road of no return for wide-ranging technology research. Of course these are later stories.
In 1999, the teacher left the company and set up a laboratory by himself, mainly to study various small tools and equipment. Due to the high cost of various experiments, he later found a company to cooperate with, and I was also in the period after he left. After time, he followed him into this company. At that time, the entry of mobile phones into China was already vigorous, and this company specialized in the research and development of tracking mobile phone batteries. Including the research and development of chargers and various green power generation devices, such as hand-cranked generators, solar cells, body temperature chargers, etc. These technologies should be said to be relatively advanced at the time. If we insist on development, it is expected that today's chargers will be different, and will no longer be the only chargers today; perhaps persistence is more important, the master is very grateful I was able to share the joys and sorrows with him. But it is very regrettable that the final cooperation was abandoned due to various reasons. We were frustrated and rented a house in Longgang (New Town) in order to continue working on this development.
Success has never been drawn with the tip of a pen. It requires constant creation and updating. Persistence is especially important. No matter how deep the quagmire you are, you must have the courage to finish this journey; so much so that a later boss told me that A truth "Persistence is the essential foundation of a person's success. If you fail, it means that you have not persevered. If you persist, you will definitely have success, so when you have no strength to persist, you must remember. , you are very close to the truth of success!", that was told to me by a Hong Kong person without any cultural background, a person who can't even speak Mandarin, his truth is by no means profound, but he is from A small mechanical workshop with only four people has developed into the most well-known equipment leader in China in ten years. We cannot help but marvel at his persistence. Almost all automation designers can be proud of entering this company. To put it simply, if they are competent for the work of this company, then you almost don’t need to interview in any company in the same industry; that is my current The place I dreamed of going to, I didn't expect that I was invited to this company later.
During those days in Longgang, I found that I hadn't called my mother for a long time, so I called my mother. What I didn't expect was that my mother scolded me once because I didn't send a penny back when I came out. I don't have a single phone call. My family is very difficult now, so I run around. After the master knew about this, he gave me a sum of money and asked me to send it back, which made me very grateful! Longgang New City is under construction, and large-scale real estate is emerging. Our R&D room is between these newly-built office buildings. We work hard every day. Our first product is an air ion separator, which is now called ozone. The generator was mainly used in automobiles at that time. Later, I wanted to develop negative ion air conditioners for use in hospitals, but gave up due to financial reasons;
After tossing and turning, we finally found a company that helped him develop office products. Products like binding machines, punching machines, shredders, etc. The first was the development of an automatic binding machine. The application is to put the book or paper that needs to be stapled into the machine, and the machine will automatically staple, that is, an automatic stapler; this product (movement) finally came out after difficult development. In the laboratory, we finally made it. Experiments have shown that only a few dozen of 10,000 nails are bad, and everyone is very happy. Unexpectedly, they encountered major problems when they were delivered. Almost hundreds of 10,000 nails have problems;
this makes the manufacturer extremely I was unhappy, so we took it back, but there was no problem. Everyone was puzzled, why it was possible here, but not at the manufacturer; so changing the battery and changing the structure still couldn’t work; after a long time, there was no problem. The manufacturer was also anxious about the progress, and finally canceled the contract; although the contract was cancelled, after everyone's analysis, it turned out that our conditions were very poor. It is not the same. The temperature is only 18 degrees after the air conditioner. The whole environment has changed a lot, so we changed the original circuit and solidified the circuit board into a block with glue, so that it is not affected by the external temperature. Finally, It finally worked. I saw this product on the bottom floor of Shenzhen Book City two years ago, and the price is more than 80 yuan. I don't know if the movement has changed now?
In fact, the success of every product is hard-won. People who have not experienced design failure will never be able to understand this feeling, but the joy of success can make a person completely happy. Therefore, many people think that a thing is very simple, and they don't even know that this small product has to go through product design, mold design, manufacturing of copper males, spark forming and finally molding to become a final product. It's hard to let others understand you, but it's easy to let others misunderstand you. People will only see the good side, and the bitterness behind it can only be hidden behind the free and easy words.
Later, due to the lack of orders and R&D funds, the entire team finally had to say goodbye to each other, but for me, this period was a great harvest, from only helping with drawing design to mold design, from scheme design to experimental verification, every time Every step is full of sustenance and hope; the feeling of being single-handed is really beautiful, so that I keep indulging in it, and when I suddenly release it, I feel a sudden attack of loss.
After we separated from each other (in 2000), the master returned to Hong Kong temporarily, and I joined a Japanese company, mainly engaged in the development of ATMs, vaults and communication cabinets. My job was to design the hard insurance structure of ATMs. Through the development of sheet metal equipment, many technologies are started from scratch. The first thing is to understand the process of sheet metal processing, from sheet metal design to CNC program programming, to flexible punch proofing, and finally to bending, every step and detail must be relearned. Of course, I have to learn a variety of different materials, because sheet metal technology is relatively simple, I mastered these things in a very short time, and quickly entered the design stage.
Because ATM deals with currency, the most important thing is safety performance, including the entire research and development. The research and development is divided into two parts, hardware insurance and software insurance, and these two people cannot communicate with each other, it may be considered as a whole. Security and confidentiality, Little Japan pays great attention to this link. I am doing development work on the hardware insurance side. I deal with material research and analysis and rack structure design all day long. Of course, I am also responsible for the structural modification of other models. Because this company has been engaged in safe manufacturing for nearly 60 years. The whole of Japan is the most authoritative, so almost all the major brands in Japan ATM OEM industry (including design), the specific brands are Omron, Fujitsu, OKI, Toshiba, etc.; therefore, a steady stream of drawings are sent from Japan and the United States, This also allowed me to understand the drawings of different forms in different countries. At the time, such drawings were extremely standard, and the management of the form, nailing, and numbering of drawings was completely different. Professional-level companies will be meticulous in doing anything, which is really extraordinary. So there is a saying: "Do what you do best."
Many people don't know much about bank vaults, so let's just spit it out here. We designed the frame with 25mm S50C steel plates, and drilled holes at 50mm intervals on the inner wall of the steel plate, and then inserted SKD or SSC series. The high-hardness steel bar will slip and break if it is damaged by an electric drill. To install a single or two different filament safety locks on the front door panel, a positive, three-reverse, and three-lock unlocking process is required. A slack turnbuckle door device is installed on the front. If someone damages it by impact, the screw will automatically loosen, so that the spring resets, resulting in the self-locking of the buckle door. The most exquisite thing is that the surface of the vault is coated with a very special paint, which has Conductive effect, the surface is painted in the form of vertical and horizontal conductive triggers, if someone touches it for two seconds, it will automatically alarm, which is amazing, not to mention the software alarm device.
Japanese technology is not created by blindness. It has indeed made countless people's efforts. Although there are some national sentiments in the Japanese factory, their enthusiasm for work and professionalism are worth learning. There is a very simple analogy, in the company There is an old man who is 65 years old and has already retired, but he works for the company for free. He graduated from high school at the age of 18 and entered the company to work for a lifetime. This situation is extremely common in Japan. It can be seen that their work characteristics and lifestyle are very different from ours. In the Japanese factory, I have two very friendly friends, Mr. Ohara Haru, who is my boss. There is also a man named Taro Kanno, who works with me on design. It is very happy to work with them every day, especially in technical exchanges, everyone is very frank.
When I left, I still remember that Mr. Oharaji gave me a book, which is a Japanese mechanical design manual. Compared with the Chinese one, the content is more comprehensive and the printing is fine; it is said that this book was written in Japan With a history of 200 years, there have been more than 50 printed editions, and the cumulative sales volume has reached more than 30 million copies; I love this book very much, and I often compare some calculation rules in China and Japan. Each has its own merits, and now I keep it in my library.
Time passed quickly. In the following days, I began to look for a new job. In 2002, I went to Shenzhen Shekou for an interview. At that time, it was a subsidiary of Qingdao Hisense in Shekou. The technical support engineer I interviewed was engaged in ANSYS analysis and UGS point-to-surface scanning technical support. Although I knew these two softwares, other technologies could not meet their needs, which made me extremely frustrated; I still clearly remember that day , Since the weather was good when I went in the morning, I didn't expect a rare heavy rain in the afternoon, and the sea breeze was very strong. When the bus was at Nantou Customs, the road area was full due to the heavy rain. In the deep water, the car could not move at all, and it was not until 11 o'clock in the evening that I got home.
Although Shenzhen is big, it is always difficult to find a company that suits you. I always like to do the most challenging thing for me. I have been looking for a job for a whole month and five days. Every day I go back and forth between various factories. When I come back at night, the blood blisters on my feet, when the pain hits, my will is always To be able to occupy the upper hand, I hope that this kind of training can test myself and tell myself "I will do it!"
During the time when I was looking for a job, news about Leslie Cheung's death was on TV and newspapers, overwhelming the sky; in my spare time, I often participated in heated discussions; What I encountered in this job search was an ordinary job fair. I was wandering in the Shenzhen talent market. I didn’t like to submit resumes when I saw a needle, but I started to choose after visiting all the venues. To submit resumes, no more than four at a time, to ensure quality.
At that job fair, I met a company that I can't remember the name of, but it was a company in Xili, Shenzhen. What surprised me was that they actually made office equipment, which was the right way for me, so I went to I applied before; the examiner asked me if I had done any design of stapler. There was a hand sample of a stapler on their recruitment table. What surprised me was: I opened the movement, and the movement inside was actually It is a product we have developed before. Exactly the same, it is certain that they misappropriated the technology we developed before without making any changes. I was very angry at the time, but there was nothing I could do.
In fact, the patent protection in the Chinese market does not play a big role at all. Plagiarism between products is very popular. A new product has just been released for a week, and others have copied your product; In a month, someone else can make the same product in a week, and someone else has more money, better manufacturing, and a wide distribution channel than you, and you can't compete with them; this almost made me almost give up However, it made me choose the development direction of a new technology; I decided to study electronic technology, and then turn to study chip technology, only in this way others will not be as easy to copy as mechanical products. Unexpectedly, this road is difficult and tortuous!
Among the many factories, I entered a private enterprise. I still remember this day. I came to the door of this company very early. There was a seat made of grass and fences at the door. I sat on it vaguely for a while. Yes, I eagerly hope to prepare to go to another company in the city for an interview after the interview with this company; but time seems to be passing very slowly, until 9 o'clock, no one came to the security office to take me for an interview, and after a bit of understanding, I was recruited. The clerk took me to the office; I talked with the boss for a while, and after the price was settled, the boss asked me to come to work next week; at that time, I still felt that my ability was not enough, so I didn’t dare to ask too much; So I entered this company like this; now that I think about it, I entered the earliest last train with the youngest annual ring in this industry!
Why do you say this? This company is engaged in all kinds of highly professional equipment fields such as logistics, spraying, electrostatic spraying, etc. A young man in his 20s needs an excellent foundation to enter this industry to do research and development; clearly speaking I finally entered the most difficult mechanical dynamics research in mechanics. To become an expert in this field, it takes years of research to fully master it. What I didn’t expect is that it gave me a huge opportunity, allowing me to study machinery almost completely. The general knowledge of learning; you must know that some people have been engaged in machinery for a lifetime and do not know how to calculate the power; the key is that the dynamics can hardly be calculated according to the content in the books, and various power calculations are added with wear and safety factors, and finally get The results of the calculations are not what we want at all; so this is an empirical study, you need to verify the motivation at the beginning of the design and the driving force of success, and after a comparison, you will be happy.
Work is learning, and learning can create more space for people and adapt to more environments; so what I want to say is that a person must first seize opportunities, then seize opportunities, and finally create opportunities; this is an infinite Closed loop; I am the youngest developer in this company, everything is new, so the technology is completely different from before, and everything needs to be changed by myself; research on spraying and water flow equipment requires the following Knowledge: a combination of mechanical, electrical, thermal energy, fluid mechanics (wind and water), inorganic chemistry, man-machine and other disciplines. Need to have a very rich knowledge, comprehensive is the best guarantee.
The first research is water curtain spraying. When the spray gun sprays the paint on the workpiece, the excess paint is sprayed on the opposite water curtain, and the water flow will flow the remaining paint to the bottom of the tank, and it will be pumped away by the axial flow fan on the back plate. After filtering, the paint residue is removed, and the water is circulated to the top of the water curtain. Later, the curing system is studied, which is divided into insulation body, heat energy body and conveying block. How much product the insulation body needs to store is confirmed according to the production capacity and curing time; heat energy is the most critical , There are a variety of heat energy conversion methods, such as light oil type, light steam type, electric energy type, gas and other energy sources, and then exchanged into heat energy and then transported to the solidified body; later research more equipment, factory air supply system, conveying system , infrared curing, electrothermal curing, PU curing, electrostatic spraying, electrostatic powder spraying, dust recovery, air purification, water purification, pre-treatment and other equipment, until the final electrophoresis treatment, pure water treatment, oxidation treatment of more advanced equipment research and development ;
Time can train people and also change people. When I basically master these techniques, I really feel very tired. The high-intensity labor and fast-paced life make people very difficult to adapt to. Every time I receive an order, The first thing is to go to the other party's factory to conduct on-site measurement, discuss the technical details of the project with the customer, design the plan and write the bidding document immediately after returning, and calculate the cost price at the same time. The shorter the entire time period, the better. After the bidding is completed, the structure and installation drawings must be designed, and finally the entire construction process needs to be tracked on site. From design, processing, installation to training, delivery, and acceptance, the entire process requires one to several people to operate the whole process, which can be extremely tiring.
What's more troublesome is that I went to night school in Shenzhen in 2001. Due to the 1-hour drive between the two places, I needed to constantly move around. The high-strength work and study made me a little overwhelmed. However, the optimistic thing is that people always Reversing in non-inertia, the harder people work, the more eager they are to change this situation as soon as possible, but it gave me a kind of motivation to study. The class time is Monday, Wednesday, Friday and Sunday, from 7:00 pm to 10:30 pm. , every time I get off work at 5:30, I don’t have to eat in a hurry, I rush to the school, and I go back to the dormitory around 12 o’clock in the evening to have dinner; but I rarely arrive late, usually I arrive at school 10 to 15 minutes earlier, usually finished. After class, students will communicate with each other for half an hour, and often learn about some research and development topics of the teacher.
The learning environment is very relaxed, but the class is very tense; the content of each day is very new, the single chip technology we study, the main focus of Intel's 8051 series chips, in 2001, it is still a relatively new topic, although in major Colleges and universities all have this course, but the content is short and short, and it cannot be put into practice at all, so individuals give empty promises; but what is required in schools is based on solid theory and practice as the purpose, and finally it must be done. is a real personal product. The teacher's surname is Qiu. He is a sturdy and very kind old man. He and I are from the same town in Fuzhou, Jiangxi. He has been teaching in the army in his early years, specializing in missile studies. The main topic of his research is high-frequency electronic circuits. And the single-chip control circuit, the ability is extremely powerful in our opinion, it is really unfathomable, each class is unrestrained and unrestrained for several hours, not even drinking water.
After writing a lot, I would like to talk about the detours that I have taken to learn chip technology, and this is only the case for the Yellow River Jiuqu; I wanted to learn single-chip technology but found that my electronics skills were not good enough. Circuits and low-frequency circuits, I learned the technology of single-chip microcomputer simultaneously, and later read high-frequency circuits (it was too difficult to learn well). Due to the lack of time invested, electronic circuits, especially low-frequency circuits, have always been a soft muscle for me, although I read it again later. Tried it several times, but it hasn't been very good.
After learning 8051, I was going to continue learning C language technology, but one thing interrupted me. It was a noon in May 2002. I went to visit the teacher with great interest. As soon as I arrived at the school, I heard the news that the teacher was hospitalized. , I later learned that the teacher accidentally fell and caused a cerebral hemorrhage. In Shenzhen Second People's Hospital, his life was in critical condition. I took the crying all the way to the hospital to inquire about the teacher's ward... (Technical content follow-up)
Although the teacher left us later I went away, but his teachings have always affected me deeply, so that I always think of these people when life is difficult. Among them, there will be my teacher Qiu. Here I will not go into too many details and teachers In the process of growing together, I will write an article (me and my teacher Qiu) in the future to describe in detail the bits and pieces of my life with the teacher. A particularly touching portrayal of true feelings...
In those years, the number of people learning single-chip technology gradually increased, especially in the past two years, there have been many top talents; It belongs to the 8051 series of single-chip microcomputers (currently the most); Shenzhen Book City is the place that I visit the most and most frequently, not only is it relatively close, but the key is Shuquan; every time I go to the book city, the first is to look for information in the automation control book column , I went to the mechanical manufacturing column to find information when I was tired. Until now, it seems to have maintained this habit, but there is one more program design column.
Later, when I visited, I fell in love with the PIC series of chips. There are so many things in the books, cheap, simple technology, short instructions, etc., so I caught up with the train to study the PIC series chips. The comprehensiveness of PIC chips is unquestionable. There are dozens of models in various sizes, various styles are clustered, and the options are diverse. However, it was later discovered that PIC chips are not easy to use. For the development of large-scale products, it may not be bad. , but because the address memory is intermittent and the cisc instructions are too few, it does not feel easy to use. It can be said that the biggest defect of the PIC chip is that the price of the emulator instrument at that time was too high, and the biggest defect that different chips could not emulate each other, but There are great improvements now, but too few instructions are a flaw (personal opinion).
In 2003, I began to pay attention to the development of DSP technology. There are three main brands of dsp chips, the largest being the TMS series chips from Texas Instruments (TI), followed by the MC68 series from MOTOLALA, and the adsp series chips from ADI; DSP has been popular all over the world since a long time, but there are few application materials in China. Later, I found that it is an excellent chip, so I began to conduct in-depth research on it. I first read the TMS320-C24xx series, and then read the 54xx series. The chip information of TMS-28xx finally appeared on the Internet. This is the best chip for industrial control. I am the chip I dream of most. I think it should be better if this chip is used for research and development. Later, the chip data of TMS-55xx series appeared one after another. This kind of chip is used in network and various communications. Of course, TI also has a 6000 series chip. The biggest difference is that the 6000 series chip is floating-point operation, and Several other models are fixed-point operations, which also makes floating-point computing chips mainly used in high-data processing chips in aviation, video, image processing and military fields.
But later I discovered ARM chips, and it was only later that I realized that ARM is now the most used; its comprehensive technology, wide variety, and complete data are indeed worthy of in-depth study; the key is that relatively cheap ARM experiments have appeared in the market. board, which made me direct all my energy to the research of ARM chip technology. In fact, all the learning is based on the board developed by Zhou Ligong. What I started to study was Philips' LPC2000 series. This series includes 21xx and 22xx. Now I want to read 23xx and 28xx chips, but there is not much information. In addition to Philips' chips, there is another category of Samsung's 2014 chips. Of course, this is also my next goal. It should be said that the biggest feature of the ARM chip is that it has the free switching of 8-bit, 16-bit and 32-bit data instructions, and the address segments are neatly classified and the amount of addresses is large. Better, designers can adjust different according to their needs. Type of memory.
For the learning of chip technology, the first thing to determine is that it takes a lot of energy and time to understand the hardware core of the chip, memory address sorting, register content, settings of each module block, etc., especially the understanding of peripheral chips; It is very important to use the chip to expand its functions. Therefore, in addition to understanding the chip itself, reading the chip technology also needs to understand the various peripheral devices around it, especially the various bus functions, which is extremely important; such as I2C Bus, CAN bus, ISP bus, USB bus, etc.
In addition to hardware learning, it is inevitable to do experiments. Otherwise, it is difficult to grasp what you are learning, and at the same time, you will not be able to fully understand the core knowledge of hardware. The experiment is also to verify whether your learning core is correct. Of course, learning is also for application, so the cost is unavoidable. Now there are all kinds of boards in the market. The important thing is that they are designed for different chips. Compared with the price, they are still very expensive. Just a small board It can completely compare with the price of a computer, and I spent a lot of experimental fees intermittently.
Once in a bookstore, I saw a book called UCOS_II Kernel Research. After I opened it, I found out that this is a tiny operating system, and the source code is open source. In addition to knowing how others write operating systems, You can also write your own code to interface with the chip by cross-compiling. So I bought the UCOS book here and found that it is really a good thing. It can really understand the source code, so the content is all at a glance; I just opened the paired CD at the beginning, and it contains the source code, and I will watch it later. I read the book while reading the source code, and read it over and over again and again.
The source code is to be embedded in the corresponding chip, but UCOS retains the example that can be compiled by BC on the computer, so I also want to compile it through the BC compiler. I have tried N times and failed, and I was frustrated at that time. It can be said that it has reached the extreme. Later, I found an article about BC compiling UCOS from the Internet, only to find out that it was a problem with the BC version, so I began to look for the most complete version of the BC compiler, and finally compiled the UCOS source code, The joy at that time can be imagined; I wondered how many times I was like me, and how many such detours I have gone through, so if you encounter similar problems, you must look for them on the Internet, and there will definitely be people who encounter the same problems.
Later, when I transplanted the code, I always felt that my understanding of UCOS was not very comprehensive, so I began to feel that all the source code was translated into Chinese, so that I could fully understand this content when I opened the source code in the future. For this matter, I spent four months translating, and I persisted until 12 o'clock every day. However, in order to complete it earlier, I sometimes stayed up all night. Even on the 30th night of the New Year in 2006, I was still sitting I came to translate in bed. Because my English level is very poor, all the content is translated according to the book and according to my own understanding, and it is completely impossible to translate according to the original text. I was thinking that there must be a lot of problems in it. If I publish it, it will make others laugh. Another problem is the copyright. Will others sue me for infringement, hehe! Of course, I still kept it in my study room, and it was only when I printed it out that I found that there were more than 200 pages.
For UCOS, my understanding is still not enough. I need more to embed it into the chip, and use this source code skillfully through more use. At present, there are many people using UCOS. Of course, many people have already In the study of larger and more complex uclinux kernel system, this series is completely free of source code, of course, very complex, need to know a lot of content. It should be said that my uclinux study failed very much. I couldn't understand some of the contents after reading it several times, so I could only put it on hold for the time being. The most important thing is to do what I can do.
It can be said that uclinux has taken a lot of detours, but it is also a good thing, because it allows me to learn a lot of knowledge that I wanted to learn but didn't have time to learn. At first, I didn't even know how to install the Linux system. After looking for many versions of linux, I finally found the linux operating system of the redhat 9.0 version mentioned in the book; I installed it easily according to the book; later I said that I needed to be familiar with the gcc compiler of unix, so I started to learn GCC compilation again I found that this compiler is very different from BC and TC compilers. It mainly relies on instructions to compile, which is very different from graphical compilation. It is very difficult for people who are familiar with windows; later I read the assembly embedding of gcc, so I turned to learn the assembly language of 8086. I went to the bookstore to find books about assembly. I remembered that I found a better book written by Tsinghua University, so I started to study the assembly language of 8086; This is a lot, only to find that the assembly is divided into 16-bit and 32-bit, there are many kinds of compilers, and there are two kinds of AT&T assembly developed by intel and ibm, so I started to learn the language of AT&T, and finally combined the two into one. I really understood assembly, so I also learned 32-bit assembly language together, and finally came to a conclusion;
when I read assembly language, there are still many things that I don’t understand very well, because assembly is mainly used for computer software programming, and for non- For those who know the computer kernel, it is impossible to read and write the source code through the computer operating system kernel, so in general, you must fully understand the overall hardware knowledge of the computer, in order to understand how the operating system is based on it. The computer is systematically built in one step. So I searched for a long time and finally found the 8086/8088 computer hardware volume 3 book written by intel, which explained in great detail how various computer architectures were built earlier, and explained the circuit and program composition of each component. The pictures are all described, and it is only through this book that you truly understand the mystery of the computer; but unfortunately, the first and second volumes of this book are in English, and it would be great if there is Chinese.
After doing so many things, I came to read the Linux kernel. I just bought Zhao Jiong's book "The Chinese Annotated Source Code of Linux Version 0.11". It seems that I don't understand it, but I don't have much time I learned it, and later bought the book "The Kernel of Linux", and downloaded the source code of linux0.01 from the Internet. I read it several times, but I still haven't learned it well...
As time goes by, I learn more and more Some embedded graphics design systems of miniUGI and ucGUI are established, and a complete embedded graphics operating system is established by linking them with the operating system, and transplanted to the corresponding embedded chips, many set-top boxes and various handheld devices. The equipment is developed in this way. In addition to these, the interfaces of various data transmission links also need to be mastered, such as TCP/IP technology, it is also important to understand the protocol family and embedded open source code, such as LWIP and uip, etc. Very good open source code, of course, it is difficult to master them, and at the same time, the chips and circuits corresponding to the data are required, and the transplant must be successful. change your destiny.
In addition, the integrity of USB technology is also very important. There is also very complex PCI technology, which is also a very important bus technology today. Of course, there are CAN bus and other various industrial buses. These are all The main members of today's advanced industrial technology, to understand and master them is particularly important for a professional developer.
After walking on this road for a long time, I was very tired. When I suddenly wanted to stop, I found that success was really close to me. At this time, I couldn’t help driving myself. I must continue unswervingly; only by conquering myself , can truly become a strong man! The teachings, caressing, and philosophies of my predecessors have given me too much strength. In addition to being grateful to them, what I need is strength!
Thanks to my mentors and the people who changed me, because of you, I understand my worth; so I have a saying to warn myself and the people around me, "When you have knowledge, you You have wealth, but it is only yours, and when you turn knowledge into a product, the more you create, the more wealth you will have.”