Disclosed is a fuel cell simulator for predicting the power generation performance of a fuel cell including a membrane-electrode assembly having an electrolyte membrane, a catalyst layer, and a diffusion layer. The toner has, in a DSC curve obtained by measuring the toner with differential scanning calorimeter, a glass transition temperature measured in a first scan of 50. A data pattern generating circuit 10 generates parallel data bits according to the reference clock in response to the trigger signal.