To the uninitiated an electric ... guitar there can be one, two, or more of them, of varying types and configurations. The test signal is induced by an electromagnetic coil placed near the pickup ...

A few strings, a fretboard, and a body of some sort will get you most of the way there for an acoustic guitar, with the addition of electromagnetic pickups and wiring for electric variants.

The electric guitar has been a core element of popular music for much of the past century. Pickups are the components that turn vibrations from the strings into electricity for sound and can be ...