摘要 |
PURPOSE:To implement a thin compact type, quick correction and low power consumption, by providing only one hand, providing one time element, which can be displayed one time, but making it possible to display other time element by switching. CONSTITUTION:Only one hand, which can be driven with a stepping motor 10, is provided. The time element of an hour, minute and second that can be displayed at one time is one. But other element can be displayed by switching. For this purpose, hour, minute and second are counted with modulo-60N-notation (N is a positive integer) counters 3, 4 and 5, which have full counting numbers. The time data are kept in the counters 3, 4 and 5. Meanwhile a hand 11, which is driven by one rotation with the motor 10 based on the 60N driving signals, is provided. The space position of the hand is memorized as an electric counted value with a modulo-60N-notation hand position counter 9. One value selected wit the modulo-N-notation counter is compared with the contents of the counter 9. A driving control means 8 is operated so as to move the hand quickly until the agreement is obtained. The counted value selected with a correcting and selecting device 6 is manually corrected and added. Display selection and correction are performed by a manual switch circuit 12. |