Disclosed herein is a method for scheduling computing jobs for a compute farm. An actuator is located at a proximal end of the positioning shaft that is operatively connected to the articulated digit so as to move it between a continuous range of positions from an extended position to a substantially curved position while maintaining a kinesthetic relationship between a surgeon’s finger engaging the actuator and the articulated digit. Following authentication, the system provides a service response appropriate for the type of disability of the caller. The media access controller monitors the number of packets in each of the priority queues and signals an interrupt when a packet threshold is exceeded in one or more of the priority queues. A controller is coupled to the carrier motor. However, subunits associated with different data flows within a merged data flow are not interleaved with one another.