A first information processing apparatus (superordinate model) comprises an emulation driver program storing unit which stores, in advance, an emulation driver program for: receiving a command issued by a second-device-using application program created for a second information processing apparatus (subordinate model); and controlling a first device mounted on the first information processing apparatus. At an execution of the second-device-using application program, the first information processing apparatus executes the second-device-using application program while controlling the first device by using the emulation driver program stored in the emulation driver program storing unit.