Frequency measurement in the field of electrical engineering is very important and hence various techniques have been used to measure it. A technique which increases the accuracy of the frequency measurement in a multi-measuring system (1), is described. This technique has been developed to get better accuracy around a central frequency such as 50 ± 5%Hz etc., Which will reduce the range of measurement but autoranging (2) can be used to extend it. It is possible to achieve high accuracy in the measurement of even when an 8-bit A/D conversion is employed.