Digital piano is also called "electric piano". Compared with the traditional mechanical piano, digital piano has many unique functions of "digital".
Digital piano uses digital technology (pulse code modulation technology) instead of analog technology, which not only realizes the realistic imitation of traditional piano, but also has all the functions of mechanical piano, all kinds of timbre, memory, tuning, mixing and unique functions of metronome. It also has MIDI interface, earphone (which will not cause noise pollution to the surrounding environment when connected, especially suitable for practitioners) and microphone interface, thus realizing the combination of traditional piano technology and modern high technology. Although the digital piano is developed from the modern electronic piano, it is not an electronic piano after more than 40 years of history. Because the digital piano is not as simple as "the shell of the mechanical piano wraps the core of the electronic piano", it is essentially different from the electronic piano. Electronic musical instruments have already entered the digital age. Digital piano is a digitized electronic musical instrument, not an electronic piano.