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In order to meet the requirements of high-speed serial data of long time display and storage, this paper proposes a design of host processor using FPGA+S5PV210 which combined with large-capacity Flash buffer. The front-end system using FPGA SERDES for data acquisition, which transforms and controls Flash, the backend using ARM for real-time display storage. The sampling rate of the system is high, the rate of its data inputting can up to 8.45 Mbps,the Storage capacity of it can be expanded. The design of the recorder is based on serial data which two-way data input speed is 460800bps,the data storage of the recorder is stable and reliable after testing and validation, which can be widely used in flight device. 