MCU learning board, experiment board, development board, learning which one should be selected for M

Study hard and make progress every day.

The learning of single-chip microcomputer must be more hands-on, I don't say which one is good, you can refer to Wu Jianying single-chip microcomputer development board, rich resources, with more project experience.

What exactly is a microcontroller? It's a computer, but it's just miniature, although the sparrow is small, it has all the organs: it also uses modules similar to the functions of the computer, such as CPU, memory, parallel bus, and storage devices with the same function as the hard disk, the difference is that the performance of these parts is much weaker than our home computer, but the price is also low, generally no more than 10 yuan.

It is enough to use it to do some control appliances and other not very complicated work. It can be seen in the automatic drum washing machine, smoke hood VCD and other household appliances we use now..It is mainly used as the core component of the control part.

It is a kind of first-class real-time control computer, which is on-site control, which requires strong anti-interference ability and low cost, which is also the main difference from offline computers (such as home PCs).

The microcontroller is programmatic and can be modified. Different functions are achieved through different programs, especially special and unique functions, which require a lot of effort from other devices, and some are difficult to do with great effort. If a not very complicated function is done with pure hardware such as the 74 series developed in the 50s in the United States, or the CD4000 series in the 60s, the circuit must be a large PCB board!

But if you use a series of microcontrollers that were successfully put on the market in the United States in the 70s, the result will be very different! Just because the program you write can achieve high intelligence, high efficiency, and high reliability!

Because the microcontroller is sensitive to cost, so the current dominant software is still the lowest assembly language, it is the lowest language above the binary machine code, since it is so low-level, why use it? There are a lot of high-level languages that have reached the level of visual programming, so why not use them? The reason is very simple, that is, the microcontroller does not have a CPU like a home computer, nor does it have a mass storage device like a hard disk.

Even if there is only one button in a small program written in a visual high-level language, it will reach the size of tens of k! It's nothing for a home PC hard drive, but it's not acceptable for a microcontroller. The utilization rate of single-chip microcomputer in terms of hardware resources must be very high, so assembly is still used in large quantities although it is primitive.

In the same way, if the operating system and application software on the giant computer are run on the home PC, the home PC will not be able to bear it.

I think the best recommendation is for you to choose one and build an experiment board by yourself with a multi-purpose board (hole board), so that you can get unexpected gains.

You can use the learning board during the learning phase, and you can use the development board after getting started.

1. Development board: It is a board that has been done by others in the peripheral circuit and can achieve limited functions, and you can program it to achieve its predetermined function. There are certain restrictions and it is not recommended. Self-study sheets are available.

Microcontrollers, build their own peripheral circuits, and get what functions you want to achieve, you must learn more than directly using other people's development boards.

2. Single-chip microcomputer: each pin function is fixed, you can write your own program according to his data to burn in, build peripheral circuits, and achieve certain functions, each company's single-chip microcomputer is slightly different, beginners are recommended to choose ATMEL's AT89S52, cheap, a 5 or so pieces;

3. Experiment board: I don't know if you are talking about the experiment box, which is more advanced than the development board, has more functions, and the module is clear, that is, the volume is larger, and it is generally used in schools when doing experiments.

As shown in Fig. The MCU development board integrates the functional areas of multiple experiments, which can make different experiments or complete different tasks. But they all share the same power supply, but some functional areas need to be connected to a short-circuit cap to input the signal output of the microcontroller into that functional area.

Basically, the functions to be implemented are fixed, that is, you said that only those who have them on the development board are talented, but the extended functions are not excluded. If you want to write a program to the single-chip microcomputer, first of all, of course, write a C or assembler on Keil or related software, and then compile it into a machine code that the single-chip microcomputer can recognize through the compiler, and then go to the single-chip microcomputer through the serial port line or other communication lines. The programming process of different types of single-chip microcomputers is also different from the ** line.

For details, you can check the microcontroller you are using. By writing and flashing the program into the microcontroller, you can verify the correctness of the experiment or achieve the function you want.

It is not possible to learn textbooks only for single-chip microcomputers, and only through the continuous practice of the development board can you master the knowledge of single-chip microcomputers.