Older units in the Casio line, despite being limited, were and still are popular with independent artists like Jack Stauber and Outkast for their unique and sometimes haunting sounds, particularly their pulse-code modulation keyboards.
The original Casiotone line was abbreviated to CT in the mid-1980s but has continued to feature full-sized keys.
Most Casio keyboards feature automated accompaniment sections which may include drums, bass, chords and harmonies.
Some Casio keyboards were integrated into other electronic audio equipment, including AM/FM radios and cassette decks.
Casio keyboards from the 1980s and 1990s are occasionally used by ambitious sound designers who use circuit bending, a process in which a person rewires the circuitry in innovative ways in an attempt to increase functionality, to extend the keyboard's sound palettes.