| 摘要 |
PURPOSE:To obtain desired specific-day information in a short time by performing desired specific-day cumulation arithmetic according to plural calendar data bases which are specified and stored. CONSTITUTION:A 1st calendar data base 11 is stored with calendar data in data structure and a 1st and a 2nd piece of specific-day information subordinate to specific calendar information are controlled and stored. A 2nd calendar data base 12 is stored with calendar data in data structure and the 1st specific- day information subordinate to the specific calendar information is stored; and a 3rd calendar data base 13 is stored with calendar information in data structure and the 2nd specific-day information subordinate to the specific calendar information is stored. When specific-day information is inputted from, for example, an input part 4, an arithmetic part 3 selectively accesses one of the 1st-3rd calendar data bases 11-13, accumulates the number of days or calculates calendar information while referring to the specific-day information in the selected calendar data base, and automatically calculates desired specific-day information. Consequently, the desired specific-day information can immediately be calculated through easy operation. |
