| 摘要 |
PURPOSE:To reduce control signal lines and to display integrated time at low cost by an LED display device where a counted numerical value is converted into an analog value so as to light plural LEDs at the converted value in the integrated time display device. CONSTITUTION:This device is provided with a device 11 requiring the integrated time, a timer 12 generating signals at the intervals of fixed time, a counter 13 counting the signals of the timer 12, a converter 14 converting the numerical value counted by the counter 13 into the analog value, an LED driving circuit 15 lighting the LED 16 at the analog value converted by the converter 14, and a means for displaying the integrated time by plural LEDs 16 lighted by the circuit 15.
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