A server subsystem is presented for mobile communication that provides for efficient and logical movement between applications on different servers. The unit cell size of the self-aligned lateral-transistor DRAM cell structure can be fabricated to be equal to 6 F2 or smaller. The device allows for pre-occupancy use of utilities. The system can be operated even when the bit length of the device ID is short. The EMCVT includes a clutch and brake system that allows power from a energy storage unit to be combined with the main power input to provide a torque output greater than that available from the main power input alone.