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Power Your Holiday Displays With the $25 PocketBeagle

This Linux board uses two dedicated subprocessors for real-time control

3 min read
Photo: Srihari Yamanoor
Photo: Srihari Yamanoor

imgPhoto: Srihari Yamanoor

The BeagleBoard.org Foundation is a nonprofit dedicated to developing open-source embedded hardware and software. The foundation’s latest creation is the PocketBeagle, a single-board computer that runs Linux. The PocketBeagle debuted at the World Maker Faire this past September in New York City, and we were lucky enough to be there and win one of the first boards.

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From WinZips to Cat GIFs, Jacob Ziv’s Algorithms Have Powered Decades of Compression

The lossless-compression pioneer received the 2021 IEEE Medal of Honor

11 min read
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Photo of Jacob Ziv
Photo: Rami Shlush
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Lossless data compression seems a bit like a magic trick. Its cousin, lossy compression, is easier to comprehend. Lossy algorithms are used to get music into the popular MP3 format and turn a digital image into a standard JPEG file. They do this by selectively removing bits, taking what scientists know about the way we see and hear to determine which bits we'd least miss. But no one can make the case that the resulting file is a perfect replica of the original.

Not so with lossless data compression. Bits do disappear, making the data file dramatically smaller and thus easier to store and transmit. The important difference is that the bits reappear on command. It's as if the bits are rabbits in a magician's act, disappearing and then reappearing from inside a hat at the wave of a wand.

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