| 摘要 |
A data input device is disclosed. In one embodiment, the data input device includes a plurality of input keys in which a one-stage input for inputting a first character and a two-stage input for inputting a second character are independently performed, a sensor for sensing the one-stage input and the two-stage input to the input keys, and a controller for extracting the first character or the second character redundantly assigned to the corresponding input key based on the sense result of the sensor from a memory to input the first character or the second character.
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