The measurement of electrical parameters that is voltage, current are very much important in the field of
measurements. Measuring devices has a history of some hundred years and are kept evolving from analog based to a digital
form. Electronic and digital techniques have paid way for the development of very high accuracy digital meters which are used
for measuring of electrical parameters such as voltage and current.AC digital multifunction meter is a device used to measure
various electrical parameters such as voltage, current, power, frequency, energy and power factor.
