| 摘要 |
Device able to allow manual adjustment of vision for an alphanumeric display (1) of a telephone instrument including a microcontroller (2). A brightness adjusting terminal (9) is driven by a DC voltage, the value of which can be adjusted by acting on electronic switches (17, 18) on a divider bridge (13, 14, 15). These switches are controlled, via the microcontroller, by two manual function keys (28, 29). <IMAGE>
|
