What is the function of frequency divider

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A divider is an electronic circuit or device used to reduce the frequency of an input signal to a lower frequency. It is usually implemented by dividing, counting or logical operations on the input signal. Its main working principle is to divide the input periodic signal into multiple signals with longer periods according to a specific frequency division ratio. For example, a divide-by-2 divides each cycle of the input signal into two cycles, thereby reducing the frequency by half.