| 摘要 |
Data retrieval apparatus comprises a base unit e.g. a geographic globe having a surface bearing a set of index information, and a pen-like operator separate from and co-operable wirelessly with the globe. The operator has a sensor for sensing the index information when it is brought close to the globe surface, a memory device for storing data information associated with the index information for retrieval based on a reference to the index information sensed by the sensor, a controller for retrieving said data information from the memory device by reference to the index information sensed by the sensor, and a speaker for announcing said data information retrieved by the controller.
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