本文介绍一种由A/D、D/A转换器组成的模拟乘、除法器,它已成功地应用于铁路轨道超高测量装置的不变性补偿中。它与通常的模拟乘、除法器相比,具有结构简单,可靠性高,输入范围大,便于工程调整,受温度影响小,绝对精度优于0.6%等优点,因此极适用于尚未采用计算机的工程项目中。文中还简要地介绍了在两象限乘法器基础上组成四象限乘法器的应用扩展。 This article presents a simulation by the A / D, D / A converter multiply and divide, it has been successfully applied to the railway track height measurement device invariance compensation. Compared with the usual analog multiplier and divider, it has the advantages of simple structure, high reliability, large input range, easy engineering adjustment, small temperature influence and absolute accuracy of better than 0.6%. Therefore, it is very suitable for computers that have not yet adopted a computer In the project. The paper also briefly introduces the application expansion of the four-quadrant multiplier based on the two-quadrant multiplier.