A device connectable to a computer is disclosed. The device comprises a selector defining a pathway and a plurality of positions along the pathway, the selector having a terminal displaceable along the pathway and positionable at one of the plurality of positions, the pathway being substantially straight, each of the plurality of positions having a process associated therewith. The device further comprises a sensor being operable for generating instruction signals. More specifically, the instruction signals are communicable to the computing device for executing thereon the process associated with one of the plurality of positions along the pathway whereat the terminal is positioned.