What Does Digital Multimeter (DMM) Mean?
A digital multimeter (DMM) is a testing tool that measures electrical values: current in amps, voltage in volts and resistance in ohms. Electricians use a digital multimeter as a standard diagnostic tool. Digital multimeters essentially replaced analog meters that were used prior to the 1970s and used needles to indicate values. The digital counterpart has proven to be more accurate, reliable and has increased impedance compared to its former counterpart. They also combine testing capabilities that were earlier limited to separate voltmeters, ammeters and ohmmeters. Many modern multimeters also have special additional features.
Techopedia Explains Digital Multimeter (DMM)
The face of a digital multimeter usually has four components:
