1. It depends on your interest. If it is a hobby, you can do something you like and can do. For example, a drop bottle with automatic flow control and a simple pulse meter. If you want to become a professional, you have to learn analog electricity and digital electricity, because the single chip microcomputer needs the cooperation of peripheral circuits to run. For example, you have to shape (count electricity) and amplify (analog electricity) to be recognized by the microcontroller.

2. The analog circuit talks about the structure and working principle of two-stage and three-stage transistors, and then multiple triodes can form an operational amplifier, which is the basis of the analog circuit. Let's just say that your single chip microcomputer is made up of thousands of triodes.

3。 Let me give you an example. Do you know the serial port of single chip microcomputer? It is a shift register (digital electricity). Each shift register consists of multiple flip-flops, each flip-flop consists of a NAND gate, and the NAND gate consists of a series of triodes. In this way, you will find this when you learn electricity. First, you learn gate circuits, then flip-flops, and then shift registers. When I learned to count electricity, I knew that triode could form a gate circuit and could be a trigger. . . As for how to form (internal structure), there is no need to know.

4. Tell me something about my experience: If you want to have fun with single chip microcomputer, you should learn the driving method of LCD, so that you can display it. If you want to be a robot (as many fans do), you need to count your analog electricity. Being a robot is complicated, but it has a great sense of accomplishment.

Single-chip microcomputer is not a separate thing. If you want to do something practical, you must learn some analog and digital electricity. You can think about what you want to do, and then study in a targeted way according to the requirements of this project, step by step. In electronics, single-chip microcomputer is the promotion of electricity calculation, which is relatively easy, and it is also easy to do things that only calculate electricity. But electricity metering is only for control, and it is only a part of the actual product. And don't do high-speed data acquisition unless you have a good oscilloscope.

I have nothing to answer today. Electrons can't be explained clearly in a day or two, but they are fun. It can make you eat or drink for a day. Ask again if you have any specific questions. Finally, my suggestion is to read more books, ask more questions and be practical. qq4 178 16043