Abstract
Musical keyboard instrument has a long history, then we have many kinds of keyboards (ex. piano, choir organ, and accordion). Since conventional keyboards cannot change their hardware configuration such as the number of keys they have, we have to carry with a too big keyboard for playing music that requires only small diapason. To solve this problem, the goal of our study is to construct UnitKeyboard, which has only 12 keys (7 white keys and 5 black keys) and connectors to dock other UnitKeyboard. We can build various kinds of keyboard configurations by connecting UnitKeyboard to others. Moreover, since UnitKeyboard has various functions such as the automatic settings considering the relationship among multiple keyboards, and we discuss applications using this framework of UnitKeyboard.
