Abstract: The present invention provides a small memory device with drivers on device, which comprises a memory and a bluetooth transceiver module or a wireless transceiver module (e.g., IEEE 802.11b). In addition to common memory function, the memory can have a bluetooth drivervon device so that the bluetooth transceiver module can perform short-distance wireless transmission. The bluetooth transceiver module can thus transmit the data in the memory or receive information into the memory for storage. Besides, other common drivers can be inbuilt in the memory so that a computer system can automatically detect and install the drivers. The user needs not to take CD-ROM disks or floppy disks along with him for installation. The present invention provides a portable memory having the effects of short-distance wireless transmission, plug-and-play, and high portability.

Abstract: A power-saving switch control mechanism for hand-held electric appliance comprises a sensor to detect the approaching hand of user and then continuously transmit signals to activate a switch into a close-circuit status in order for a cell to supply power to a control circuit of the electric appliance. When the sensor fails to detect the hand on the electric appliance, the switch returns to an open-circuit status to stop the cell from supplying power to the control circuit and stop the operation of the electric appliance accordingly.