PURPOSE: To provide the output device which enables a user to quickly and intuitively recognize his biorhythm state by changing one's face and body figure expressed by combination of respective stored part patterns to an expression and a form according to the change of one's biorhythm, to output them.

CONSTITUTION: Data related to one's birthday inputted from a key input part and personal data like a part pattern number group like one's likeness are stored in a RAM 23, and a biorhythm operation part 51 of a discriminating part 50 calculates biorhythm data based on the present data and the time data obtained by counting the clock pulse signal from an oscillating part 27 by a clock circuit 26, birthday data called from the RAM 23, and a biorhythm constant read out from a ROM 21. When a CPU 20 judges that one is in a good condition for living body activity, part patterns for display of a comfortable expression are selected from a part pattern ROM 22 to display the face having the comfortable expression on a display part 2; but when the CPU 20 judges that it is in a bad condition, the face having a displeasing expression is displayed.