中文摘要：

部门操作不在传统的应用程序相对是经常的，但是它在许多现代应用程序逐渐地不可缺少、重要。在这份报纸，修改症状位(MSD ) 的实现用第三的光计算机(TOC ) 的系统上的 Newton-Raphson 方法的浮点分割被学习。因为 MSD 浮点的增加是带免费的， TOC 的系统的位宽度大，处理足够宽的数据并且把部门操作转变成增加和增加操作是容易的。并且用数据扫描和截断，位扩大的问题有效地在错误限制的范围被解决。部门得到好结果，效率高。MSD 浮点分割的例子证明方法是可行的。

英文摘要：

The division operation is not frequent relatively in traditional applications, but it is increasingly indispensable and important in many modern applications. In this paper, the implementation of modified signed-digit （MSD） floating-point division using Newton-Raphson method on the system of ternary optical computer （TOC） is studied. Since the addition of MSD floating-point is carry-free and the digit width of the system of TOC is large, it is easy to deal with the enough wide data and transform the division operation into multiplication and addition operations. And using data scan and truncation the problem of digits expansion is effectively solved in the range of error limit. The division gets the good results and the efficiency is high. The instance of MSD floating-point division shows that the method is feasible.