What is an embedded system?
Embedded System, IEEE (International Society of Electrical Engineers) for the definition of embedded system is: An Embedded system is the devices used to control, monitor, or assist the operation of equipment, machinery or Embedded systems are “devices used to control, monitor, or assist in the operation of machines and equipment”.
In the field of embedded system in China, the concept of embedded system is more recognized: embedded system is application-centered, based on computer technology, and the software and hardware can be tailored, suitable for the application system to the function, reliability, cost, volume, power consumption has strict requirements of the special computer system. It is generally composed of embedded microprocessor, peripheral hardware equipment, embedded operating system and user application, which is used to control, monitor or manage other devices.
Embedded system generally refers to non-PC system, which includes two parts: hardware and software. Hardware includes processors/microprocessors, memory and peripheral devices and I/O ports, graphics controllers, etc. The software section includes operating system software (OS), which requires real-time and multitasking operations, and application programming. Sometimes designers combine the two types of software together. The application program controls the operation and behavior of the system; The operating system controls the interaction between application programming and hardware.