Electronic music is a term for music created using electronic devices. As defined by the IEEE standards body, electronic devices are low-power systems and use components such as transistors and intergrated circuits.

Working from this definition, distinction can be made between instruments that produce sound through electromechanical means as opposed to instruments that produce sound using electronic components.

Examples of an electromechanical instrument are the teleharmonium, Hammond B3, and the electric guitar, whereas examples of an electronic instrument are a Theremin, synthesizer, and a computer.

Cited from Wikipedia.