The Prototype Synclavier (1975) was developed at Dartmouth College, New Hampshire, USA, (Sydney Alonso, who developed the hardware designs, Cameron Jones, who developed the software, and Jon Appleton, musical advisor to the project) as a self contained digital synthesiser based on a network of integrated circuits and micro-processors. In 1976 the New England Digital Corporation was created to market the machine. The user was shielded from the software complexities by a comprehensive push-button keypad. Later models had a VDU, QWERTY keyboard and hard disk. A touch strip allowed continuous pitch control.