China trade data analysis tools

List of contents of this article:

• 1,China trade data analysis tools Introduction to the principle and application of embedded real-time operating system μC/OS-II
• 2, real-time embedded system has
• 3, Embed What are the input operating systems
• 4, The difference between embedded real-time operating system and general operating system

Introduction to the principle and application of embedded real-time operating system μC/OS-II

μC/OSII is a famous real-time kernel with open source code, which is specially designed for embedded The application design can be used for all kinds of 8-bit, 16-bit and 32-bit single-chip microcomputers or DSP. Since μC/OS, the kernel has been applied for more than 10 years and has been widely used in many fields.

μC/OS-II is a priority-based preemptive multitasking real-time operating system, including real-time kernel, task management, time management, inter-task communication synchronization (signal volume, mailbox, message queue) and memory management and other functions.

Since ucos ii is a cut-off operating system, the size of RAM required depends on the function of the operating system. For example, μC/OS-II allows users to define the maximum number of tasks. Because each task is established, a corresponding data structure TCB is generated, which takes up a large part of the memory space.

Real-time embedded system has

1. Embedded real-time operating system C/OS-II, embedded Linux, Windows Embedded, VxWorks, etc. Embedded operating system refers to the operating system used for embedded systems.

2. Four common embedded operations in the current mainstreamThe systems are VxWorks, Windows CE, μC/OS-II and embedded Linux, which have their own advantages and disadvantages.

3. Commonly used special embedded operating systems include Smartphone, PocketPC, Symbian, etc. According to real-time, it can be divided into two categories: real-time embedded operating systems are mainly aimed at control, communication and other fields. Such as WindRiver's VxWorks, ISI's pSOS, QNX of QNX System Software Company, ATI's Nucleus, etc.

4. VxWorks VxWorks is a product of WindRiver in the United States. At present, it is an embedded operating system with a wide range of applications and a relatively high market share in the field of embedded systems.

5. VxWorks VxWorks operating system is a real-time embedded operating system (RTOS) designed and developed by WindRiver in 1983. Due to its high-performance system kernel and user-friendly development environment. Outstanding features of VxWorks: reliability, real-time and reduction.

What are the embedded operating systems

1. The four common embedded operating systems currently are VxWorks, Windows CE, μC/OS-II, and embedded Linux. , each of them has its own advantages and disadvantages.

2. Embedded real-time operating system C/OS-II, embedded Linux, Windows Embedded, VxWorks, etc. Embedded operating system refers to the operating system used for embedded systems.

3. There are three main types according to the usage environment, that is, the application field: desktop operating system, server operating system and embedded operating system. Desktop operating systems are mainly used on personal computers.

4. Real-time embedded operating systems are mainly aimed at control, communication and other fields. Such as WindRiver's VxWorks, ISI's pSOS, QNX of QNX System Software Company, ATI's Nucleus, etc. Non-real-time embedded operating systems are mainly aimed at consumer electronic products.

The difference between embedded real-time operating system and general operating system

Different from general operating system, real-time operating system does not focus on the average performance of the system, but requires each real-time task to In the worst case, it must meet the real-time requirements. That is to say, the real-time operating system focuses on individual performance, and more precisely, it is the worst-case performance of the individual.

The choice of embedded operating system There are a wide variety of real-time embedded systems, which can be roughly divided into two types: commercial and free. The commercial real-time operating system has stable and reliable functions, and has perfect technical support and after-sales service, but it is often expensive.

Different platforms Embedded version: The embedded version can run on Microsoft-based 32-bit and 64-bit Windows platforms. General version: The general version can run on the Microsoft-based 64-bit Windows platform. Network version: The network version can run on Microsoft-based 64-bit Windows platform.

Embedded system and embedded operating system 1 Embedded system Embedded system is embedded computingThe machine is the core of technology, user-oriented, product-oriented, application-oriented, software and hardware can be reduced, which is suitable for special computer systems with strict requirements for function, reliability, cost, volume, power consumption and other comprehensive performance.

"The differences between embedded computer systems and general computer systems are function, size and shape, hardware configuration, operating system and development environment. Function: Embedded computer systems are usually designed for specific tasks or applications, while general-purpose computer systems can complete a wider range of computing tasks.