| 摘要 |
An electronic display device includes a housing having a sliding slot, an electronic display board received inside the housing and moved to extend out of the housing through the sliding slot, the electronic display board having a digital display screen on a front side thereof for display a telephone number or the like and a keyboard on a back side thereof for inputting the telephone number or the like to be displayed, and a motor-driven transmission mechanism controlled to move the electronic display board in or out of the housing.
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