说明：  嵌入式系统是以应用为中心，以计算机技术为基础，并且软硬件可裁剪，适用于应用系统对功能、可靠性、成本、体积、功耗有严格要求的专用计算机系统。它一般由嵌入式微处理器、外围硬件设备、嵌入式操作系统以及用 户的应用程序等四个部分组成，用于实现对其他设备的控制、监视或管理等功能。嵌入式系统和具体应用有机地结合在一起，它的升级换代也是和具体产品同步进行，因此嵌入式系统产品一旦进 入市场，具有较长的生命周期。
(Embedded system is take the application as the center, take the computer technology as the foundation, and hardware and software can be cut, for the application of the system function, reliability, cost, volume, power requirements are strictly dedicated computer system. It is generally composed of embedded microprocessor, peripheral hardware, embedded operating system and user)