| 摘要 |
PURPOSE:To effectively execute both a time display and a stop-watch time display, by counting a unit being smaller than a time display unit when a stopwatch is being operated, and displaying a lower numerical value by a dot. CONSTITUTION:An AND gate is controlled through an FF36 by the first diaplay command button 15, and a time display part 13 is switched to a stopwatch time display a 60-scale counter 71 and a 12-scale counter 72. Subsequently, when a stopwatch operating element 14 is operated, an AND gate 73 is opened through an FF58, a 1 second pulse from a pulse generator 21 is counted by a decimal counter 69, a 6-scale counter 70 responding to a carry signal in order, and the counters 71, 72, and hour and minute of the stopwatch time are displayed on the display part 13 and every 10 seconds being below a minute of a lower numerical value are displayed in dot display parts 62a-62f through a decoder 80. Also, when the second display command button 16 is operated, a 1/10 second pulse from the generator 21 is counted, a lower numerical value of every 2/10 second is displayed by a dot, and both a time display and a stopwatch time display are executed effectively. |
