| 摘要 |
PURPOSE:To contrive to diversify the kinds of clocks by designing so as to be able to select optionally the combination of the content shown by the indication from and an analog/digital indication part. CONSTITUTION:An optional logic is designed to control terminals CT1, CT2, CT3. Then, when an input switch SA is operated, output signals TC1, TC2, SC1, SC2 and DC generate from a control circuit 9 respectively in accordance with each specification. When the output signal TC1 is 1, the content of a time and minute clock counter 4 is supplied to an analog indicating decoder 10 through a gate circuit 7, while when an output signal TC2 is 1, said content is supplied to a digital indicating decorder 11. The content of the second counter 3 is supplied to the decoder 10 when an output signal SC1=1 and to the decoder 11 when an output signal SC2=1 through the gate circuit 6 respectively. The output signal DC is supplied to the gate circuit 8 and the content of a month, date and week day counter 5 is supplied to the decorder 11 when an output signal DC=1. By this invention, each specification is switched to a plurality of indication modes. |
