Two memory chips mounted over a base substrate have the same external size and a flash memory of the same memory capacity formed thereon. The RFID tag device monitors the occurence of an external event such as a change in the environment. The computer also transmits the data received from the device being simulated by the electronic circuit simulation to the hardware peripheral. The use of the halogen ionhydrogen peroxide-free coppercopper alloy surface bonding promotor enables the coppercopper alloy to have a rough surface that exhibits excellent adhesion to resins and superior solderability. The user interface further includes a programmed delay interface via which a user may specify a desired start time andor stop time for the wash cycle.