Index inputting apparatus
The utility model relates to an index inputting apparatus, comprising a sphere, a grating encoding rotary plate, an infrared transmitter, and infrared receiver, a control circuit and a function button. The number of holes which are arranged on the external circumference of the grating encoding rotar...
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Main Authors | , , |
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Format | Patent |
Language | English |
Published |
09.08.2000
|
Edition | 6 |
Subjects | |
Online Access | Get full text |
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