What you said is extremely objective!
The history of analog electricity is only 70 years, which is very short compared with a very high number. So the development is much less.
For example, the electric field barrier in the free (no-load) PN junction at the beginning of the module class is determined by the balance between minority carrier drift current and multi-carrier diffusion current. There are actually too few children. According to the calculation, when the doping rate is one in ten million and the forward voltage drop of silicon diode is 0.7V, the minority carrier is only one in 65.438+000 billion of the multi-carrier. About 654.38+000 billion children, there should be a minority. There are so few children, just like a big pot of water without even a grain of rice! It is more difficult to balance minority carrier drift current with multi-carrier diffusion current than cooking without rice. Therefore, the electric field barrier in the free (no-load) PN junction is generally Uho in the book, and there is no result so far.
A few examples of analog electronic technology are as follows:
1. Using the balance of minority carrier drift current and multi-carrier diffusion current to determine the electric field barrier in the free (no-load) PN junction, there is nothing to do!
2. It is considered that there is a residual internal electric field in the forward conduction PN junction, but I don't know how big the residual internal electric field is!
3. It is considered that the principle of LED luminescence is that carriers recombine in N region and P region, so it can be judged that LED can also emit light when reverse current flows. In fact, no one can prove that LED can emit light when it flows through reverse current.
4. It is considered that LED will only emit light when the current reaches a certain value, but there is no report that LED will start to emit light when the current reaches a certain value.
There are still many defects. For example, a photodiode can work with a power supply and can detect light without a power supply. Why?
You can ask the teacher quietly if he knows.
But I suggest you don't push the teacher.
Computer majors study analog electricity, mainly as an interface. When the interface is ready, there will be a foundation for programming.
You'd better find a comprehensive model to read.