*A multimeter is an electronic measuring instrument, considered the “all-in-one” tool of electronics. It measures multiple electrical values, such as voltage, current, and resistance, all in one meter.

*Main types of multimeter

  • Digital multimeter (DMM): This type displays the readings in numbers on a digital screen (LCD). It is easy to use and the most accurate.
  • Analog Multimeter: It has a needle which moves on the scale and shows the value.

*Main functions (what can it measure)

* Digital multimeter (DMM): This type displays the readings in numbers on a digital screen (LCD). It is easy to use

ana we most acculale.

* Analog Multimeter: It has a needle which moves on the scale and shows the value.

Main functions (what can it measure)

“AC / DC Voltage: Checks the voltage of home power

(AC) or battery (DC).

“DC Current: Measures the amount of current (Ampere) flowing through a circuit.

  • Resistance: To measure the resistance (Omega) of a wire or component.
  • Continuity: To check if the wire is broken (it makes a beep/sound).
  • Diode test: Whether the diode or transistor is working properly or not.
    main part
  • Display Screen: Where the reading is displayed.
  • Selection Knob: The thing to be measured (like Voltage or Resistance) is set by rotating this knob.
    Probes (strings):
  • Black Probe: Always plugged into the COM

(Common) port.

* Red Probe: Connects to the V$lOmega $mA port to measure voltage, resistance, or continuity.