The HCC4527B (extended temperature range) and HCF4527B (intermediate temperature range) are monolithic integrated circuit, available in 16-lead dual in line plastic or ceramic package. The HCC/HCF4527B is a low power 4 bit digital rate multiplier that provides an output pulse rate which is the clock input pulse rate multiplied by 1/10 times the BCD input. For example, when the BCD input is 8, there will be 8 output pulses for every 10 input pulses. This device may be used to preform arithmetic operations (add, subtract, divide, raise to a power), solve algebraic and differential equations, generate naturel logarithms and trigonometric func-