A data output device according to the present invention comprises: an output device capable of outputting an image and/or a sound; a memory which stores a plurality of types of output data for outputting the image and/or the sound; a receiver for receiving, from a slot machine, a trigger signal including specification information for specifying the output data; and a controller, the controller programmed to conduct the processes of: (A) receiving the trigger signal from the slot machine through the receiver; and (B) extracting, from the memory, an output data corresponding to the specification information included in the trigger signal and causing the output device to output the image and/or the sound based on the extracted output data.