AT&T Laboratories
Cambridge
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AT&T Laboratories |
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This picture shows four generations of the Active Badge. Bottom left, the first version, with a unique five bit code. Bottom right, the second version, with a ten bit code. Top left the third, current, version, with a forty-eight bit code, bi-directional capabilities, and an on-board 87C751 microprocessor.
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Copyright © 2001 AT&T Laboratories Cambridge