displaying an alarm setting table including a plurality of alarm setting formats in an alarm setting mode;

activating at least one alarm setting format selected from the plurality of alarm setting formats by a users,

wherein each alarm setting format is a user-interface including one alarm time display region displaying one user-selectable alarm time and an alarm day display region displaying at least one alarm day, and

wherein the alarm day display region has respective regions corresponding to a plurality of user-selectable days-of-the-week corresponding to the one alarm time; and

setting the alarm time and an alarm day in the activated alarm setting format in response to input from the user and setting the alarm in response to the alarm setting format;

wherein the step of setting an alarm time and an alarm day in the activated alarm setting format comprises:

setting a time input by the user as an alarm time;

checking whether a day-of-the-week selected by the user is already set as an alarm day;

if the selected day-of-the-week is not yet set as an alarm day, setting the selected day-of-the-week as the alarm day;

if the selected day-of-the-week is already set as an alarm day by the activated alarm setting format that is currently being edited, canceling the alarm day setting; and

if the selected day-of-the-week is set as the alarm day by another setting format, canceling an alarm time set by the other setting format for the selected day-of-the-week, and setting an alarm time set by the currently edited alarm setting format as an alarm time for the selected day-of-the-week, thereby setting the selected day-of-the-week as an alarm day.