A
keyset or
chorded keyboard (also called a chorded keyset,
chord keyboard or
chording keyboard) is a
computer input device that allows the user to enter characters or commands formed by pressing several keys together, like playing a "
chord" on a
piano. The large number of combinations available from a small number of keys allows text or commands to be entered with one hand, leaving the other hand free. A secondary advantage is that it can be built into a device (such as a pocket-sized computer or a
bicycle handlebar) that is too small to contain a normal-sized keyboard.