| 摘要 |
PURPOSE:To solve the restrictions in the arrangement of the fitting position of a rotation detecting part and display device, the delay in responce time of the display device itself and the low in accuracy and weakness against vibration, by providing a sensor circuit, count and latch circuit, controlling circuit, etc. CONSTITUTION:A sensor circuit 3 detecting the number of revolutions of an engine and transducing into an electrical signal and the signal outputted therefrom are changed to a count pulse signal 28 and outputted to a count and latch circuit 24. A latch signal 29 stopping the count of the circuit 24 and a controlling circuit 22, etc. outputting a resetting signal 30 returning the signal thereof to the prescribed count are provided. The signal inputted into the circuit 22 is outputted to the circuit 24 together with a signal 29 and signal 30 outputted from the circuit 22 according to the instruction of a time counting circuit 23 as a signal 28, then, and outputted to a display circuit 25 and the number of revolutions is displayed in digital form. The signal of a sensor is outputted to a divider circuit 26 solenoid counter 27 and the integrated number of revolutions is displayed in digital form. |
