The multimeter was originally used to measure the three physical quantities of voltage, resistance, and current, so it is also called a multimeter. With the advancement of science and technology, the functions of multimeters have been continuously improved, and the new multimeters have added functions such as temperature measurement, frequency measurement, diode measurement, and triode measurement; the types of multimeters have also expanded from pointer types to numbers that can directly display measurement results Mode. Nowadays, digital multimeters are widely used because of their advantages of simple operation, portability, and fast reading.
