A method and apparatus for attaching a dental restoration to a tooth through spot curing a bonding agent to allow excess bonding agent displaced beyond the margin of the restoration to be wiped cleaning from the surrounding surfaces without displacing the restoration. An electromagnetic service switch is provided for selectively transferring the electromagnetic service from a host or other electromagnetic service source to an electromagnetic service consumer. A system and method is provided to automatically send an alert message the radio and television station listeners of upcoming music broadcasting events. A local oscillator signal is used to provide LO+ and LO\u2212 signals to one of the multipliers and by providing the LO to a phase shifter, generated are a ninety degree shifted LO+ and LO\u2212 signals provided to the other multiplier. The processing unit recognizes an operating mode by means of a boot program, and makes either the first basic software or the second basic software operate based on the recognition of the operating mode. The controller plots the actual operating information provided by the sensors on the stored map to evaluate whether the turbocharger is operating in different operating regions.