| 摘要 |
PURPOSE:To secure reading of the alarm time with the time on the spot by designating the city along with setting of the alarm time and then displaying the alram time converted into the time of the city which is displaying the time at present. CONSTITUTION:For the city where the time displayed on display unit 67 differs from the time of the alarm time setting counter, arithmetic circuit 68 receives the output of two counters featuring the time differential. When both times are referred to as t1 and t2, time differential t0=t1-t2 and -t0 are caused at output terminals 68a and 68b each. Thus terminal W is held at ''0'', and the present time of city I is displayed on unit 67 with terminal X held at ''1''. Accordingly, gate circuit 37 opens to supply time differential t0 to conversion circuit 69 in case the alarm time of city II is being read to the alarm setting counter. So that the time which is obtained by subtracting time differential t0 from the time of the alram setting counter and then converting into the time of city I is displayed on display unit 72. |
