Abstract

An electronic device in the nature of a hand-held calculator, for illustrating on the display area required string and fret positions of a fretted stringed instrument to be fingered to play the notes making up a particular chord. The device comprises a series of manually operable basic chord information buttons and a visual representation of the strings of the fretted instrument and of the frets over a particular range is also provided. A ROM means is programmed with chord table information relating chords in desired keys with related fret and string finger position information. A microprocessor means is electronically associated with the chord information switches, open string position indicator LED's, first fret reference LED's, fret and string finger position LED's stores information concerning the particular chord information buttons and upon being actuated, the microprocessor searches the ROM means for fret and finger position information corresponding to the chord information button or buttons actuated, and displays that information by way of illuminating means in the appropriate areas of the fret and string representation. Such a device adopts logic technology to store and reproduce in a display area information as selected concerning the strings and fret positions to be fingered for any selected predetermined chord on a fretted stringed instrument through the application of an appropriate logic system.