What's the difference between an electric piano and an ordinary piano?

Electric piano electric piano, electric piano needs electricity. The key size, thickness and width of the common electric piano are basically the same as those of the piano, but the height is much shorter than that of the piano. Pronunciation through the power amplifier speaker is richer in timbre, convenient to control, small in size and relatively cheap in price. The pronunciation principle is relatively simple, which is basically the same as the speaker we use. There is a timbre memory chip in it. When you play the keys, the keys touch the internal circuit, and the internal circuit responds to the speaker through the chip, and finally produces music.