Is single chip microcomputer difficult to learn?

Single chip microcomputer and PLC are more promising, analysis

There are many different views.

Single-chip microcomputer and PLC are more promising, and it will be clearer to analyze their respective characteristics.

plc:

1 is the finished product of other companies (such as Mitsubishi). The circuit design is mature and the stability is naturally high.

2. Software integration is also a finished product.

3. Combining the above two items, it is easy to learn and has a short development cycle.

4, shortcomings, expensive, a complete set (general project) to more than 6 people? I'm afraid I can't afford a set of study experiments.

5. Also, the function should be limited.

6, intellectual property rights, I can't say, basically not.

Single chip microcomputer:

Generally speaking, plc is easy to learn and the project price is high. I don't earn as much as foreign companies (plc manufacturers), which is equivalent to doing coolies for others. Single chip microcomputer involves a lot of knowledge, and it is not easy to learn it well. It is really simple. It is not easy to make money without making money. The above are only personal opinions and are for reference only.

It is true that the cost of devices developed by single chip microcomputer is relatively low, but its development cost is relatively high, and the engineer's design cycle should also be counted as the cost. So I think PLC is more suitable for non-standard systems, and batch equipment, standard equipment and single chip microcomputer will be more suitable.

PLC is a single-chip integrated system in the field of single-chip microcomputer industry, which is reliable, stable and safe.

The application prospect of single chip microcomputer is very good, but it must be remembered that it is not easy to be reliable, stable and safe. Can I do aging screening of components? Otherwise, its products are worthless. This is a practical problem faced by many single chip microcomputer products. If aging screening of components can be achieved, the cost will not be very low. The above is for reference only.

I basically have two applications, but generally speaking, I use PLC more. I'm afraid to tell my colleagues above that, aside from the previous "future" aspect, I want to talk about my experience from its cost performance and reliability:

1, if the price of a PLC is compared with that of an 805 1, even ATMEL's is only a dozen dollars, which seems very expensive compared with a PLC with several thousand dollars at a time. Many people have such a misunderstanding that it is very cheap when it comes to single chip microcomputer. This concept comes from a traditional or superficial point of view. In fact, the cost of making a thing is multifaceted. From electronic circuit design to line-by-line code (assembly or C) to compilation, debugging, burning and repeated debugging, or making the simplest equipment, it takes hundreds of times more time than using PLC.

You must sell an emulator and a programming device. Professional silver costs at least 3,500 yuan (I bought a simulator and recorder in 2000), which means that students need more than 1 1,000 yuan.

3. After the circuit board is designed, it will take a lot of effort to open the mold to make a printed circuit board. Without experience, there will still be a lot of interference on the printed circuit board. Of course, not to mention the cost. Big bosses should know how much it costs to start a mold. Opening a mold is often not enough. There may be many sets, and tens of thousands of sets are definitely indispensable.

4. After the development, many modifications have to be made according to the actual situation. If it is used in engineering, it can be hanged and the simulator and programming device can be moved to the site. Haha, fool, someone uses single chip microcomputer to do engineering. ?

Endless interference has followed you like a disease from the beginning. Put a contactor next to it and try it a few times. It will definitely have unexpected effects. Ha ha.

In a word, according to my experience, when it comes to reliability, you will suffer again. A person's brain can't reach the level of using PLC now anyway.

Is it a single chip microcomputer? Is it useless? Of course not, otherwise it wouldn't exist. In my opinion, single chip microcomputer can still control household appliances, because the application environment is not very bad. Of course, if you decide to do it with a single chip microcomputer, it will have a certain order of magnitude. For example, you can order hundreds of thousands of products at one time, and the control requirements are not high, so you can consider it.

I don't know if Hysy really used PLC (I doubt it, at least I just know, but I don't know why, just on the surface). If you say that a project depends on a 6-bit PLC (assuming what you say is true), if it is Siemens PLC, it must be above S7300, which means there are at least thousands of I/O points. I don't think all heroes who have been in the industrial control industry for more than ten years may have the opportunity to do thousands of points of control, so I want to do it with a single chip microcomputer. It's a bit of a dream, that is, the price (including all the expenses incurred) will probably be more than four, and I don't think eight will do. Let's open our eyes and see if that project is really made with a single chip microcomputer.

I read a post before (maybe it's my brother who designed single chip microcomputer) that it's easy to develop a PLC. I think it's a good idea, but it's a bit of a joke to get it here.

It can be said that many people are familiar with the application of PLC, but know nothing about the application of single chip microcomputer. On the contrary, people who are familiar with the application of single chip microcomputer know little about PLC, which has two overlapping application fields. Again, if you want to play a good single chip microcomputer, you really need to have a good foundation, including digital circuits and analog circuits.

As for that future, I think it is a "fool" who asks for directions. No one will know what you are asking, and there will never be a correct answer. Because it is aimed at different people and different situations. Just like the person who asked this question, people say that single-chip microcomputer has a future, and you may not be able to do it.

Everything has money (the future), and it depends on people's efforts.

I agree with the above point: but I want to explain it with a few points.

1, system engineering must use plc at present, who dares to use single chip microcomputer? Reliability, feasibility, on-site upgrade, replacement and maintenance, technical support (for such a big project, who can understand your huge single-chip microcomputer system, the technical support will be in the hands of your brother or several people), experimental cycle, development cycle and development cost are not low, so don't say anything without plc.

2. Single-chip microcomputer is suitable for small applications, with one-time development investment and mass production. Plc can't be used, the price is high, and the installation layout is also limited (such as small household appliances, such as mobile phones and buttons).

3. Of course, it is a medium-sized project. Plc and single chip microcomputer are optional.

In short, if we look at the original intention of developing plc and single chip microcomputer, we should be more clear about their uses.

1, no finished product, no ready-made software, make your own circuit board. So there is a lot of knowledge involved, such as; Protel, assembly or C language, can also visualize programming and electronic circuits.

2. Stability; Compared with plc, it depends on your own ability. If you don't do it well, you may not be able to run, let alone compete. But if it is done well, the performance is still very stable, and there is basically no problem with our company's products.

3, the function can be developed at will, basically unrestricted, and the application is wider.

4, the price is cheap, the whole set of equipment (general engineering) is almost 4 people.

5, have their own intellectual property rights, haha ...