| 摘要 |
This electric mechanism comprises a keyboard (12) which includes a navigation key (15) showing on one side a surface for the user to depress and on the other side various contact points (21, 22, 23 and 24). To avoid various contacts being activated when this key is pressed, a configuration of ribs (30) is provided to separate said contact points and thus avoid multiple contacts. Application to cellular radiotelephones.
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