adjustable frequency divider的用法和样例：
- N is the desired noninteger frequency divider.
- The DC into AC current adjustable frequency that the inverter on.
- It was used as a frequency divider and no numbers are decoded from it.
- Verilog HDL design of frequency divider in RTC module is studied here.
- The adjustable frequency range can be extended by decreasing the wide of the bridge and the resistance of the Wheatstone bridge.