| 摘要 |
The invention relates to a data input device comprising several keys which are arranged over at least two lines. According to the invention, a unidirectional position detector is associated with each line of keys and each unidirectional position detector comprises a first input connection, a second input connection and an output connection. The output connections of the unidirectional position detectors are connected at different locations to a first ohmic resistor. In addition, the first input connections are connected to a first terminal of the data input device and the second input connections are connected to a second terminal of the data input device.
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