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Showing posts from September, 2017

Throwback Thursday Object: Triformation BD-3 Embosser

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The BD-3 was Triformation's first braille embosser, released in 1971. The BD-3 was the first commercially available digital braille embosser in the U.S.  On the outside it looks like a normal American Tourister suitcase.  On the inside you get the deluxe mid-century faux woodgrain table with a reel of paper tape, a covered embossing head, and a small row of switches, lights, and jacks.  It was described as a "braille verifier," producing braille copy on paper tape as regular copy was typed, either by a teletype machine, or a computer terminal.  It weighed 15 pounds and cost $1,850.  Triformation's full sheet embosser, the LED-120, became available in June 1974, and although more expensive, $9,000, it was much more popular.
This example was obtained by Howard Goldstein while studying computer science at the University of Connecticut in 1976.  It was connected to a Teletype Model 33 teleprinter, producing braille on paper tape as the teleprinter produced print.  Accordi…

Quick Tip: Explorer Bright Ray. The Explorer Bright Ray is a new head-worn LED lamp to help adults and students with so many activities!

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Throwback Thursday Object: G-4 Obstacle Detector

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Blind since boyhood, Thomas A. Benham earned his doctorate in electrical engineering from Penn and taught physics and math at Haverford College until he retired in 1976. In 1950, he began working under contract with the Veterans Administration to evaluate the Signal Corps Obstacle Detector, a pioneering electronic travel aid.  In 1953, Haverford subcontracted further investigations to Biophysical Instruments, Inc., whose lead investigator, Malvern Benjamin, worked with Benham to develop three different prototype obstacle detectors based upon the same principles as the Signal Corps model.  All three used reflected light to detect obstacles/objects in the direction ahead of the user.  The G-4 was an early model which apparently never made it past the prototype stage. About half the size of a box of cereal, its brown Bakelite case has two large lenses on the front, a heavy battery in its base, and an angled handle with a crystal knob on the top that would vibrate when an obstacle was det…

Quick Tip: Slapstack Math. Slapstack Math is an action and memory game that uses virtual math flash cards instead of playing cards.

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Quick Tip: ECC Icon Poster. The ECC Icon Poster is a wall-sized print/tactile poster that lists the Expanded Core Curriculum skills important for the specialized instruction of blind and visually impaired students.

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Throwback Thursday Object: Tactile Poker Chips

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Have you ever seen tactile poker chips?  They have been making braille playing cards for more than a hundred years, so I guess it makes sense that you need accessible chips too.  These plastic red, white, and blue chips came in the traditional round, an octagon, and a scalloped round.  We found them on ebay, but I don’t know any other history.  Send us your stories of any tactile chips you have used. Add comments to this post or to the accompanying posts on Facebook, Twitter, Pinterest, or Instagram.
Micheal A. Hudson
Museum Director
American Printing House for the Blind

Quick Tip: Paint by Number Safari™ Tropical Rainforest. Tropical Rainforest is the first of the Paint by Number SafariTM Series. This coloring series is for children and adults who wish to learn about art, nature, and real world colors.

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