| 摘要 |
PURPOSE:To enable electronic modification without using a mechanical heart cam or lever, by enabling sure selection and setting on the occasion when a chronograph hand for writing in an electronic circuit is modified to the zero position. CONSTITUTION:The titled device is provided for specifying a digit modified by selection when there two or more chronographic hands, and the circuit thereof is constituted as shown in the figure. When a select switch 6 is turned ON in the state wherein the chronographic hands can be modified while a clock switch 6 is unlocked, a counter 17 makes a chronograph motor 11 rotate according to a signal from a frequency division circuit 2, via a gate 18 and a motor driving circuit 10, to rotate a chronograph indication A. Next, by pressing the select switch 7, a timer 17 makes a chronograph motor rotate via a gate 19 and a motor driving circuit 13, according to a signal from the frequency division circuit 2 and a signal from a switch control circuit 9, to rotate a chronograph hand 15. Then, the hand 15 is rotated for modification by an arbitrary amount by means of a set switch 8. |
