Hello everyone, I remember Cheng.
This problem is the same as " I have heard a lot of truths, but I still have a bad life ".
I have heard a lot of truths, have you implemented them? You know it’s not good to go to bed late, but you still stay up late playing on your phone. You know it’s not good to skip breakfast, but you still ignore breakfast because you get up late.
The combination of hardware design theory and practice is extremely close , and it is far from enough to study digital-analog electrical theory alone.
What we have to do is to integrate theory into practice and deepen our understanding of theory from the results of practice. This is why I recommend college students majoring in electronics to do practical projects and participate in more competitions.
1. Most of the learning in school is theory, with little practice
There are some practices that are coping, and many students don't care about them and don't take them seriously. Of course, there is still a huge gap between this kind of practice and participating in work to make products.
2. The electrical course is difficult to understand, the teaching is unreasonable, and it is seriously out of touch with the market
① For hardware design, the more important digital and analog courses, the domestic textbooks are mainly exam-oriented education, which is difficult to understand on the one hand.
Why is it difficult to learn analog electronics? I answered it once before. If you are interested, you can take a look.
Why is analog electronics so difficult to learn?
②The teaching is unreasonable . Some schools don’t even teach MOSFETs. You must know how common MOS tubes are in circuit design, and how commonly used components are similar to triodes.
My university suffered from it: "Ah, we use so many MOS tubes in the circuit diagram, the teacher actually skipped it, and we have to spend more time to supplement the basic knowledge at work."
③There is a serious disconnect between teaching and the market . For example, when I went to college in 2012, the school used Protel 99SE in the EDA tool class at that time. You must know that the company designs circuits and PCBs, which are hardly used. Why can’t it keep pace with the times? Woolen cloth? What about improving the competitiveness of students abroad in advance?
3. The circuit diagram is the concentrated essence
Why do you say that? Let me speak slowly.
Product research and development is a very long chain. Circuit diagram design and PCB design can only be said to be a small part of it. It is more preparatory work (including demand analysis, functional anatomy, and "confrontation" with customers, etc.) ) and post-commissioning maintenance (function debugging, machine debugging, reliability debugging, mass production test, etc.) work.
This complicated process requires a lot of knowledge. I suggest reading the following article .
How do hardware engineers get started with zero foundation?
A schematic diagram for mass production must combine the needs of customers (some of which are strange and unreasonable), the early design review, the integration of mid-term debugging results, the integration of small batch mass production results, and so on.
Many designs are improved and optimized after lessons have been learned.
Schematic diagrams with the same function are not necessarily applicable to products in different industries, because industry standards, usage environments, and functional details are different.
This is a circuit diagram that has undergone various debugging and "tests". You have not been deeply involved in it, and it is normal that you can't understand it .
4. Selection is a difficult task
Let me talk about what the landlord said that I don't know how to choose the model.
Selection is not that simple .
1. There are many key parameters of components, and different circuits have different emphasis on selection;
2. There are many characteristics of components, and the selection ignores their important characteristics, which leads to problems in actual projects;
3. There are many types of electronic components ;
4. There are many classifications of the same type of components, with different advantages, disadvantages, and emphases;
Having said so much, it is not a post to persuade you to quit. I just want to say that the study of electricity must be a combination of theory and practice. After studying hard for a few years and forming your own set of working habits and learning methods, the future will be brighter. As for being so confused.
Of course, learning is painful, and continuous learning can make continuous progress .
If you think it is helpful to you, just give it a like. If you have technical problems, you can click the business card below to contact me .