比例乘法器是一种用数字方法产生一个可调输出脉冲序列的电路。有BCD比例乘法器和二进制比例乘法器两种。CC4527是CMOS BCD比例乘法器,其输出脉冲频率为输入脉冲频率与BCD输入数乘积的1/10。由于CC4527具有多个输入端和输出端,逻辑功能较强,因此,与有关电路连用时,不仅可以完成加、减、乘、除、乘方、开方等运算,而且还可以解代数方程和微分方程、进行A/D和D/A转换以及分频等,这种乘法器电路结构简单、成本低、非常适用于仪器仪表中的运算部件。因此,它可在仪器仪表、数字滤波、数字控制等方面得到广泛应用。本文在阐述CC4527电路原理的基础上,介绍其在运算电路中的 A proportional multiplier is a circuit that digitally produces an adjustable output pulse train. There are two kinds of BCD multipliers and binary multipliers. The CC4527 is a CMOS BCD proportional multiplier whose output pulse frequency is 1/10 of the product of the input pulse frequency and the BCD input. Because the CC4527 has multiple inputs and outputs, the logic function is strong. Therefore, it can not only add, subtract, multiply, divide, exaggerate, and square, but also solve algebraic equations and Differential equations, A / D and D / A conversion and frequency division, such a multiplier circuit is simple, low cost, ideal for instrumentation in the computing components. Therefore, it can be widely used in instrumentation, digital filtering, digital control and so on. This paper describes the CC4527 circuit principle, based on its introduction in the computing circuit