A token device that generates and displays one-time passwords and couples to a computer for inputting or receiving data for generating and outputting one-time passwords and performing other functions is provided. The bag body has a closed first end and an open second end. A slider bar is oriented substantially parallel to a longitudinal axis of the cylinder. View transformations are finally recovered. In accordance with the present invention, it is possible to stably supply a desired voltage closing to a power voltage to the bitline bias transistor.