| 摘要 |
The circuit displays the service area distinguished by the use of two colors at night. The circuit includes a microcomputer (10) for outputting the control signal according to the data of service area, the 1st switching means (20) for acting by the on-state when one of microcomputer controlled outputs is high, the 2nd switching means (30) for alternatively acting instead of 1st means when the other output is high, and the displaying means (40) for distinguishing the ready or no service area by one of the two colors (a ready service area is blue color and no service area is red color).
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