HS code-based re-exports in free zones

List of the table of contents of this article:

• 1, Introduction to the three levels of embedded system design
• 2 、What are the core technologies of embedded system development
• 3, What is the definition of embedded system? What are the three basic elements?
• 4, The method of making skirting line closing in embedded wardrobe

Introduction to three levels of embedded system design

Level 3 : Take IP as the basis for the embedded design of the kernel library, and use the design method of software and hardware collaborative design technology.

The system itself. Drive. Apply to. The system can be imagined as the Windows driver that everyone knows. Everyone who has played with the computer has installed it. Application, QQ, which everyone is familiar with, belongs to one of them, that is, users can operate it directly.

The three stages of embedded learning are as follows: the first stage: basic and theoretical stage.

Step 1: Hardware design: mainly design hardware circuit diagrams, draw hardware schematics, draw hardware PCB diagrams, and make PCB boards. Step 2: Software design: mainly design the underlying functions of the system, API functions, implanted operating systems, and design applications.

What are the embedded system development?Some core technologies

such as commonly used electrical appliances at home, various communication equipment, mechanical instruments, as well as vehicles, automobiles, airplanes, etc. Embedded systems play a very important role in aerospace, military applications, household furniture, industrial manufacturing and other fields.

This article will introduce the skills needed for embedded development. Software and hardware can be used. Low-end single-chip microcomputers can not only eat software and hardware, but also separate software and hardware. It's okay if you want to learn everything. ARM single-chip microcomputer ARM single-chip microcomputer can also be added without an operating system, which is equivalent to a single-chip microcomputer with stronger performance.

Learning embedded software development should start from learning single-chip microcomputers. Single-chip microcomputers are the basis of all embedded computers. The earliest embedded systems were single-chip microcomputers as the core. With the progress of technology andDevelopment has gradually developed into the current high-end high-speed control system such as DSP and ARM as the core.

For those engaged in embedded (embedded training) system software development, they generally need to master the following basic skills: (1) Understand C language and some simple assembly language programming. ( 2) Be able to read the schematic diagram of general embedded systems. ( 3) Be familiar with the software development environment of at least one embedded system.

The core hardware of the embedded system is a single-chip microcomputer, also known as a single-chip microcomputer (MCU). It is a microcomputer that miniaturizes the basic components of the computer and integrates them into a chip. Usually, the chip contains CPU, ROM, RAM, parallel I/O, serial I/O, timer/count. Device, interrupt control, system clock and system bus, etc.

The working environment of embedded talents is also good, and the development prospect is also very broad. What are the advantages of engaging in embedded development? There are two major advantages of engaging in embedded work: first, the work intensity is relatively low and there is no need for repetitive labor; second, companies engaged in embedded systems have their own product plans, act at their own pace, and will not be modified all the time.

What is the definition of embedded system? What are the three basic elements?

Specific application: The embedded system is designed and customized for specific applications. They are used to perform specific tasks, such as household appliance control, car engine control, medical equipment monitoring, etc. Each embedded system is carefully designed to meet the needs of specific fields.

Broadly speaking, an embedded system is a collection of computer software and hardware with specific functions or uses. That is, a special computer system that is application-centered, based on computer technology, software and hardware can be cut, and adapts to the strict requirements of the application system for function, reliability, cost, volume and power consumption.

The embedded system is mainly composed of embedded microprocessor, peripheral hardware equipment, embedded operating system and user application software. It has three basic elements: "embedding", "speciality" and "computer system". Embedded systems and general computer systems have completely different technical requirements and technological development directions.

The embedded system is application-centered and based on computer technology. The software and hardware can be cropped and adapted to the application.The system is a special computer system with strict requirements for function, reliability, cost, volume and power consumption.

monitor, or assist the operation of equipment, machinery or plants). It can be seen that the embedded system is a synthesis of software and hardware, and can also cover auxiliary devices such as machinery.

The method of closing the skirting line in the embedded wardrobe

1. You can use a special closing strip to close the skirting line section, but it needs to be fixed by the eye, and the aesthetic effect will be poor. You can also make a slope at the door socket position, and then make a slash on the skirting line, so that the two can be perfectly stitched together.

2. If it is a finished wardrobe, the skirting line can be made where the wardrobe is placed. If it is a custom-made wardrobe, the skirting should not be made on the two walls where the wardrobe needs to be placed. When the wardrobe is finished, the edge should be done under the wardrobe.

3. First, measure the length and width of the reserved position, and then clean it up. Clean up the dust and garbage in the reserved position and keep it dry and tidy. Then paste the polished skirting line with glass glue, and organize and stitch the corners. Finally, wait until the skirting line is firmly pasted. , just embed the cabinet.

4. Or make a slope connection at the interface with the door sleeve, and make a diagonal mouth for splicing of the skirting, which can be perfectly connected. The skirting line is matched in different places, and there are differentClosing method, the solid wood skirting line and the closing of the wardrobe can be closed with the help of glass glue. Glass glue is a simple and convenient closing tool.

5. When making the skirting line of the cabinet wall, the skirting line can be extended to the cabinet body for connection. When installing skirting boards, it should be adjusted according to the layout of the room, and try to reserve the space for the wardrobe.

6. Repairing skirting gaps is a common problem in home decoration. This article will introduce three repair methods in different situations to help readers solve this problem. If the gap is small, you can apply glass glue directly along the gap. You can apply the glass glue evenly with your fingers, and then wipe off the excess glass glue with a wet towel.