由于小卫星对星载计算机系统有性能高、重量轻、体积小、功耗低等许多苛刻的要求 ,使目前的技术在应用中受到了很大的限制。由于遥测数据的高速下行 ,自主操作及大规模数据的存储条件的要求 ,促使我们研制新一代的星载计算机系统。本文就星载计算机系统的硬件结构进行了简要的论述 Due to the high performance, light weight, small size, and low power consumption of many on-board computer systems, the small satellites have made the current technology greatly restricted in application. Due to the high-speed downlink telemetry data, autonomous operation and large-scale data storage requirements, prompting us to develop a new generation of on-board computer systems. This article briefly discusses the hardware structure of the spaceborne computer system