| 摘要 |
PURPOSE:To improve drivability by selecting one of a plurality of sets of wheel sizes and display units set in a memory means by an operation switch, and registering selected information at a computing means when an automobile is driven and a signal for the number of revolutions being not zero is outputted from a detecting sensor. CONSTITUTION:26, 27, 20, 22, and 24 are stored as a wheel size and Km/h and mile/h is stored as a display unit. A first memory means 13 is provided. In registration, an operation switch 9 is first operated during the stop of an automobile to read a first set of the wheel size and the display unit from the first memory means 13 by means of reading means 14. 0 is displayed and flickered at a speed display part 14a of a display unit 11, Km/h at a speed unit display part 11b, and 26 at a running distance display part 11c. Further, each time the display switch 9 is operated, the second and following sets of wheel peripheral lengths and speed units are orderly read and displayed at the display unit 11. When the automobile is run and a number of revolutions signal is inputted from the detecting sensor 4, a current reading content is stored and registered at a second memory means 15. |
