Embedded industrial computer integrated system is a special computer system, as a part of device or equipment. Generally, embedded system is an embedded processor control board in which the control program is stored in ROM. In fact, all devices with digital interfaces, such as watches, microwave ovens, video recorders, automobiles, etc., use embedded systems. Some embedded systems also contain operating systems, but most of them are implemented by a single program.

According to the definition of application object, embedded system is a combination of software and hardware, and it can also cover mechanical and other accessories. The commonly accepted definition of embedded system in China is: application-oriented, based on computer technology, software and hardware can be tailored to meet the application system's strict requirements of function, reliability, cost, volume, power consumption and other special computer systems.
An embedded system device is generally composed of embedded computer system and executive device. Embedded computer system is the core of the whole embedded system, which is composed of hardware layer, middle layer, system software layer and application software layer. The executive device is also called the controlled object. It can accept the control command from the embedded computer system and perform the specified operation or task. The executive device can be very simple, such as a micro motor on the mobile phone, which is turned on when the mobile phone is in the vibration receiving state; it can also be very complex, such as Sony smart machine dog, which integrates multiple micro control motors and a variety of sensors, so that it can perform various complex actions and feel various state information.