What is a single chip microcomputer? Explain in detail!

If you plan to learn single-chip microcomputer all the time, then buy a multi-function development board with a lot of information, and there are also C language tutorials.

Then buy some very basic books that you think you can understand, and finally start your MCU career, start with the running water lamp, step by step, don't rush, read the program little by little, don't leave a vague concept, so that you can grow.

It's very simple, find a relatively simple and basic book to see, it will be, it's good to get started first, recommend a book to you, learn single-chip microcomputer is Guo Tianxiang's single-chip microcomputer learning! If I had enough money, I would have learned pretty quickly when I bought a study board from him

It depends on what kind of burner you have, and who do you ask to buy the burner? This is not technical, you can't forget it if you burn it once, it's not perfect enough, but I hope it helps you!

MCU is a kind of integrated circuit chip, which is a small and perfect microcomputer system composed of a small and perfect microcomputer system composed of a silicon wafer that uses ultra-large-scale integrated circuit technology to integrate the best processor CPU, random access RAM, read-only memory ROM, a variety of IO ports and interrupt systems, timer counters and other functions (may also include display drive circuits, pulse width modulation circuits, analog multiplexers, AD converters and other circuits) into a silicon wafer, which is widely used in the field of industrial control. A single-chip microcomputer, also known as a single-chip microcontroller, is not a chip that completes a certain logic function, but integrates a computer system into a chip. It is equivalent to a miniature computer, and compared with a computer, the microcontroller only lacks the IO device.

In a nutshell: a chip becomes a computer. It is small in size, light in weight and cheap, which provides convenient conditions for learning, application and development.

At the same time, learning to use a microcontroller is the best choice to understand the principles and structure of computers. From the 80s of the last century, from the 4-bit and 8-bit single-chip microcomputers at that time, to the current 300m high-speed single-chip microcomputer. The use of single-chip microcomputer has been very wide, such as smart meters, real-time industrial control, communication equipment, navigation systems, household appliances, etc.

Once a variety of products are used in single-chip microcomputers, they can play a role in upgrading the product, and often preceded by adjectives in front of the product name - "intelligent", such as intelligent washing machines.

The program can be divided into 3 parts:

1 Collection. Depending on the circuit, the acquisition method is also slightly different, and the simpler one can use the matrix circuit.

It can be scanned or interrupted.

2 Processing. Do 4 byte registers, if the storage space is not large, 4 nibble registers will also work.

Divided into 100000 bits.

After collecting the first digit, put in the single digit, collect the second digit, move the number of the single digit to the ten digit, and put the new number into the single digit. And so on until you get to the thousands.

3 Display. Just output a 100,000-digit number.

If the highest digit is 0, it is not displayed.

First, use a 7-bit data cable to statically light up a single digital tube.

After one is successful, it is expanded to 4 and displayed dynamically.

Toys for children are typical applications, such as remote-controlled cars.

1.Suppose the content in accumulator A is 03h, the register dptr = 1002h, and the execution instruction is 1092h; MOVC A, @a + DPTR (2 bytes), and send the content with the address of (1005h) units in the program memory into the accumulator A.

2.To store the contents of the accumulator into the 8155A's internal RAM unit, you need to use the command (movx @dptr, a).

3.The (ret) instruction must be used at the end of the subroutine with the purpose of (returning to the main program).

4.In serial mode 0, both input and output data pass through (rxd), and the CLK always outputs from (txd).

This question is written as follows also right:

4.In serial mode 0, both the input and output data are output via (, and the CLK is always output from (.

5.The fundamental difference between the instruction jb tf0,up and jbc tf0,ip is that the former (does not clear tf0) and the latter (clears tf0).

6.After the div ab command is executed, (quotient) is in a and (remainder) is in b.

7.When the 8031 content T1 is operating in the timing state, the counting pulse comes from (12 divisions of the crystal frequency).

8.The reason why the MCS-51 series is called a single-chip computer is that it contains (CPU), I-O port, and (memory, timer, etc.).

9.When initializing the 8155 chip, (the control word) needs to be written to (the control register of the 8155).

Short-answer question: How to form AB, DB, and CB when 8031 microcontroller expands program memory, data memory and IO interface?

AB: The output of the P2 port is the high octa, and the output of the external latch of P0 is the lower octag.

db: p0 is db.

cb：psen、。

Return to ** use points.

txd5.Does not affect the C flag Clears the C flag 6The quotient exists and the remainder exists.

7.Internal crystal oscillator 12-way pulse.

ram, etc. 9.Control Word 8155 On-chip control register.

Short-answer questions won't. What age is it, who still uses 8031, and 51 is behind and eliminated.

Please check the book, any of the 51 basic textbooks have a direct answer.