A digital multimeter (DMM) is a device that provides multiple types of measurements within one device. DMMs uses a more accurate and readable digital output than an analog solution. Without using a DMM to immediately measure live voltage and currents, there is a risk of painful shocks that can even be lethal. Therefore, it poses as a serious safety hazard.
Modern multimeters are often digital due to their accuracy, durability and extra features. In a digital multimeter the signal under test is converted to a voltage and an amplifier with electronically controlled gain preconditions the signal. A digital multimeter displays the quantity measured as a number, which eliminates parallax errors.
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