| 摘要 |
PURPOSE:To display a desired date out of male/female child conception days in digital form according to operations, when necessary, only by simple operations on the first day of a menstruation cycle. CONSTITUTION:A card type case 1 is provided with a liquid crystal display 2 and respective switches 9, 10, 11, and 12 of MEMORY, SAFETY, BOY, and GIRL. The liquid crystal display 2 consists of a time display 3, date display 4, data display 5, mode display 6, and the like. When the MEMORY switch 9 is operated on the first day of a menstruation cycle, a control circuit calculates the menstruation cycle on the basis of this operation to store it into the memory and calculates a male child conception possible day on the basis of the longest menstruation cycle out of past data, and a female child conception possible day on the basis of the shortest menstruation cycle to store them. For example, when the BOY switch 11 is turned on, the control circuit reads a male child conception day out of the memory and displays it in digital form for a fixed time on the data display 5. A user needs no trouble recording or calculation, so that male/female body delivery plan can be executed simply. |
