| 摘要 |
PURPOSE:To offer a clock for enhancing the effective utilization of time by displaying ratio of an elapsing time to a scheduled time interval through the percentage of which 100 of the value is attained on the completion of the scheduled time interval. CONSTITUTION:A time interval to be measured is converted into minute, and a selective switch 5 for a variable frequency dividing circuit is set. The number of divisions of a frequency dividing circuit 4 set beforehand is set through the switch 5, then frequency of an output of a generating circuit 1 for reference clock is devided and is inputted into a counter driver 6. Thereby, a display 7 of a percentage of an elapsing time or a percentage of a remaining time is carried out. |
