A digital multimeter is an electrical device that combines the functionality of a voltmeter, ammeter, ohmmeter and milliammeter. The device is used to measure electrical parameters such as voltage, current and resistance. The digital multimeter, unlike the analog multimeter, has an LCD screen for displaying the results, making it easy to use and provide accurate readings. Considering its portable size, ease of use and possession of digital and analog converters, it's a common tool for every electrician due to its effectiveness.