实现用SDRAM运行nios，同时用SRAM保存摄像头数据，可以广泛的应用于数据预测及数据分析,基于人工神经网络的常用数字信号调制。- Implemented with SDRAM run nios, while saving camera data SRAM, Can be widely used in data analysis and forecast data, The commonly used digital signal modulation based on artificial