Abstract: A system controllable by an external microcontroller via an interface external to the system includes a radio module, and a GPS receiver. The radio module is adapted to 1) pass messages received via the interface to the GPS receiver via an internal interface, and 2) to receive messages from the GPS receiver via an internal interface and pass them further to the external interface.

Abstract: A system controllable by an external microcontroller via an interface external to the system includes a radio module, and a GPS receiver. The radio module is adapted to 1) pass messages received via the interface to the GPS receiver via an internal interface, and 2) to receive messages from the GPS receiver via an internal interface and pass them further to the external interface.

Abstract: A method is provided for controlling the power consumption in an electronic appliance which has a data interface suitable for data transmissions, the method involving data transmissions which arise being monitored and registered and the power consumption in the electronic appliance being controlled on the basis of the registered data transmissions which arise. The present invention also provides an electronic appliance which has at least the following elements: a data interface for performing data transmissions, a monitoring unit for monitoring and registering data transmissions which arise, and a control unit, coupled to the monitoring unit, for controlling and setting a power consumption on the basis of the registered data transmissions which arise.