The frequency division is to use the same clock signal to convert into a clock signal of different frequencies through a certain circuit structure. 12v desktop power adapter, desktop power adapter 24w, 12v switching power supply, 24v 1a desktop power adapter Guangdong Mingxin Power Technologies Co.,Ltd. , https://www.mxpowersupply.com
The divide-by-2 is a circuit structure with a frequency division function. When the clock is triggered for 2 cycles, the circuit outputs one cycle signal. For example, a counter is triggered by a pulse clock, and the counter is cleared once every 2 counts and outputs 1 pulse. Then this circuit implements the divide-by-2 function.