| 摘要 |
The circuit has a color switching circuit (6) including a first trigger signal generator (40) for forming trigger signals for color searching, a counter (10) connected to the generator (40), IC switches (S1, S2, S3) electrically connected or disconnected according to the output of the counter (10), a second trigger signal generator (41) for forming trigger signals for sequentially varying the R, G, B colors, a three bit counter (11) connected to the generator (41), seven AND gates (20-26) for outputing high-level signals by the counter outputs, and three OR gates (30, 31, 32) for outputting signals in the order of R-G-B-Y-M-C-W; and IC switches (S4, S5, S6), thereby easily and exactly searching good or bad colors by seguentiol color variations. |
