CASIO打印式计算器FR-2650DT 　   CASIO打印式计算器FR-2650DT 　   　 ？  提供丰富尺寸，桌面型打印式计算器，12位数字显示 ？  两种颜色打印，每秒打印3行 ？  带内存，内建税率函数 ？  完整的十进制系统，浮点数四位固定位， Full-Size desktop printing calculator with 12-digit display2-color printing at 3 lines per secondBuilt-in tax function and independent memoryFull decimal system, floating fixed (0-4) with round-off, cut-off and add modeFeatures mark-up/down key, right shift key for quick correction and profit margin %Includes AC adapter 。