| 摘要 |
PURPOSE:To enable the indication of times of various kinds by incorporating a circuit adapted to memorize a plurality of times so that the hour hand alone is fed quickly by depressing a mode switch to indicate time in various parts of the world. CONSTITUTION:A signal subjected to a crystal oscillation with an oscillation circuit 101 and division with a division circuit 102 turns to a signal of 1 Hz to drive the second and minute hands with a motor driver 201(A). On the other hand, the signal of 1 Hz is inputted into two kinds of time counters (A) and (B) and divided up to the cycle of 12 hours. The data of the time counters are momerized into latches 203(A) and 207(B) respectively. The numeral 202 indicates the time counter (A), 203 the latch (A), 204 a coincidence circuit (A), 205 a hand position setting circuit, 206 a coincidence circuit (B), 207 the latch (B), 208 the time counter (B), 209 a mode switching control circuit, 210 a presetting circuit, 211 a control circuit (A), 212 a control circuit (B), 213 a hour hand motor driver, 214 a mode switching terminal, 215 a terminal for quickly feeding the hour hand and 216 a terminal for the state of pulling the crown. |
