noun
frequency divider; frequency demultiplier
Technical term in electronics and computing; a circuit or device that reduces the frequency of an input signal by an integer factor.
この分周器は入力クロックを1/4に分周します。
This frequency divider divides the input clock by four.
逓倍器 is a frequency multiplier, the opposite of a frequency divider.
Compound of 分周 (frequency division) + 器 (device).