【摘要】 介绍在单片机控制下用可编程计数器来实现对频率进行高精度测量的一种方法多倍周期法。此方法具有精度高、测量范围宽、采样时间短等特点更多还原

【Abstract】 A new method for the measurement of frequencythe multi period methodis described. It makes use of a programmable counter controlled by a single chip computer. The method is characterized with a high precision, wider measuring range and shorter sampling time.更多还原