| 摘要 |
PURPOSE:To reduce the number of operation buttons, by setting a range hold/ release function or a hold range switching function in accordance with the operation time of an operation button. CONSTITUTION:When an operation button 3 is operated, it is discriminated whether the state before the operation of the operation button 3 is a hold mode or a hold release mode, and the display of a digital display part 11 is set to a display mode opposite to that before the operation of the operation button 3. When the hold release mode is set, a timer 4 in the device is set, and the display range is switched successively one by one when the operation of the operation button 3 is continued until the time of the timer 4 expires. |
