A portable electronic device includes a display unit, a first audio unit, a second audio unit, a first sensing unit, a second sensing unit, and a controlling unit. The access controller is operative to connect the wireless handset to one of the plurality of wireline switches based on the preferred connection so as to complete the call attempt. The connection port at a free end of at least one of the modules is connectable to a source of fluid to be printed by the printhead assembly and the connection port at an interconnected end of each module interconnects with a connection port of an adjacent module. The cassette work piece storage and retrieval unit receives work pieces from the cutting table and delivers work pieces to the cutting table from any of a plurality of storage locations. The checking unit transmits, when it is determined that the commodity is subjected to the sales limitation, data for checking whether a limit condition is satisfied and determines whether data of completion of the check is returned. A length L1 of the scroll chamber measured in the motor-shaft axial direction is dimensioned to be longer than a length L2 of the multiblade fan measured in the motor-shaft axial direction.