用蒙特卡洛模拟的方法计算美式期权的价格以及基本描述,实现用SDRAM运行nios，同时用SRAM保存摄像头数据，空间目标识别，采用PM算法。- Monte Carlo simulation method of calculating the American option price and basic descr iption, Implemented with SDRAM run nios, while saving camera data SRAM, Space target recogn