The electronic piano music box sound can be replaced by a celesta, which has a short sound and a higher range. The electronic keyboard is an electronic keyboard instrument and is an electronic music synthesizer. It uses large-scale integrated circuits and is mostly equipped with sound memory memory (wave table). Used to store the real sound waveforms of various musical instruments and output them during performance. Commonly used electronic keyboards include arranger keyboards (with automatic accompaniment) and synthesizers (without automatic accompaniment). Electronic keyboards in a broad sense include electric pianos (digital pianos, which are different from electric pianos). Staffs are mostly used, and most are high and low. Double line notation. Sometimes alto notation, simplified notation, and guitar notation are also used.