A basic circuit and its software flow for UHF and VHF fequency measuring are designed in this paper. According to the basic theory of frequenay measuring,the method of frequeney is external|event|interrupt,not traditional timer|interrupt.
英
美
- 根據頻率測量的基本原理 ；采用外部事件中斷而不是常規的定時(shí)中斷的頻率測量的工作方式 ；設計了特高頻 UHF；甚高頻 VHF頻率測量的基本電路和軟件流程 .
