A driving apparatus of the invention is arranged to drive an optical lens according to expansion and contraction of an electromechanical transducer. Inputoutput data associated with an address of a data block stored in the cache is then requested from a remote node, via a network controller. If a large copy operation abnormally terminates before all the small copy operations have been completed, the model database is, nevertheless, left in a consistent state, and the copy operation may be resumed from the point of interruption. The gesture-sensing mechanism may further distinguish between a first gesture indicative of a first player input and a second gesture indicative of a second player input. At least one of the at least one fixing member and the pressing member further contains a heat insulating layer overlying the first or second substrate. During the machine cycle, the carriage is adapted to perform a machining operation on the workpiece at each workstation.