| 摘要 |
The device comprises a keyboard wherein each key is associated with an underlying sensor sensitive pad which controls the input of data associated with said key in response to an application of a finger on such key, such sensitive pads being closely set together within a closed contour (V1, V2; V'1, V'2) having, for a user, an upper part (V1) and a lower part (V2) respectively adjacent to first and second series of pads, such device being characterized in that the areas of the pads (10, 11, 12, 13; 7, 8, 9, DIVIDED ) of the first series are on the whole greater than the areas of the pads (3 to 9; 0, ., =, +) of the second series.
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