The computer 400 includes a CPU (Central Processing Unit) 410 that executes the program, an input device 420 such as a keyboard and a mouse, a ROM (Read Only Memory) 430 that stores data, a RAM (Random Access Memory) 440 that stores operation parameters and the like, a reading device 450 that reads the program from the recording medium 500, and an output device 460 such as a display and a printer.