Tag Archives: binary code

Acoustic barcodes store data in sound, go on just about anything (video)

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Acoustic barcodes store data in sound, go on just about anything

Technologies like NFC, RFID and QR codes are quickly becoming a normal part of everyday life, and now a group from Carnegie Mellon University has a fresh take on close-quarters data it calls acoustic barcodes. It involves physically etching a barcode-like pattern onto almost any surface, so it produces sound when something's dragged across it -- a fingernail, for example. A computer is then fed that sound through a microphone, recognizes the waveform and executes a command based on it. By altering the space between the grooves, it's possible to create endless unique identifiers that are associated with different actions.

It's easy to see how smartphones could take advantage of this -- not that we recommend dragging your new iPhone over ridged surfaces -- but unlike the technologies mentioned earlier, not all potential applications envisage a personal reading device. Dot barcodes around an area, install the sound processing hardware on site, and you've got yourself an interactive space primed for breaking freshly manicured nails. We're pretty impressed by the simplicity of the concept, and the team does a good job of presenting scenarios for implementing it, which you can see in the video below. And, if you'd like to learn a little more about the idea or delve into the full academic paper, the source links await you.

[Thanks, Julia]

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Acoustic barcodes store data in sound, go on just about anything (video) originally appeared on Engadget on Sat, 13 Oct 2012 00:57:00 EDT. Please see our terms for use of feeds.

Permalink Hack a Day  |  sourceChris Harrison (1), (2) (PDF)  | Email this | Comments

Scientists develop rewritable digital storage built into DNA; biological binary exists

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Scientists develop rewritable digital storage built into DNA; biological binary exists

We've seen DNA flirt with computing and storage before, but a biological system that can record digital data? That's something different. Stanford researchers used natural enzymes to create rewritable data storage built directly into living cells' DNA. The enzymes can flip DNA sequences back and forth, enabling a programmable, binary-like system where the DNA section is a zero if it points in a particular direction and a one if it points the other way. (Color coding indicates which way a section of genetic code is facing.) The so-called recombinase addressable data (RAD) module can store one bit of information without consuming any power, and in addition to letting scientists switch DNA sequences, it allows them to count how many times a given cell has doubled. That capability could come in handy for studying how cancer spreads, and could even give scientists the ability to "turn off" affected cells. The next step for the scientists will be upping the storage capacity to a byte, which will reportedly take a good ten years. That gives you plenty of time to study up on that science -- for a start, check out a more detailed account of the research in the source link.

Scientists develop rewritable digital storage built into DNA; biological binary exists originally appeared on Engadget on Tue, 22 May 2012 16:43:00 EDT. Please see our terms for use of feeds.

Permalink TG Daily  |  sourceStanford University School of Engineering  | Email this | Comments

Binary Burst LED Clock Won’t Blow up in Your Face, But Will Challenge Your Brain

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This LED clock was created by Mike Szczys and it’s pretty unusual. It tells time using binary numbers, so if you want to use something like this, better brush up on your binary.

binary burst led clock

The clock is controlled by an ATtiny44 and has a bare PCB board with LED spires that radiate out from its center, reminiscent of a traditional wall clock. Each spire has three digits, corresponding to 1, 2 and 4. When the inner and outer digits are lit up, it shows a binary five. Then the next spire will start the count. Confusing enough for you yet? The hours are displayed with a red LED, and they correspond to the positions of an analog clock, so at least those are easy to read.

If you want to build your own, you can check out Mike’s post on Jumptuck where he explains how he made the clock.

binary burst led clock off

[via Make:]