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TEI
2009
ACM
120views Hardware» more  TEI 2009»
14 years 5 months ago
The digital hourglass
This paper presents the Digital Hourglass, an alarm clock that focuses on the amount of sleep, rather than wake-up times. It follows a simple approach, lighting one LED for each h...
Fabian Hemmert, Susann Hamann, Reto Wettach