One quirky aspect is the device needs two power sources to be operational: the Orion's 11-key, "add-on" component's internal battery charges via an AC adapter, while the main portion uses four AA batteries. The Orion is 9.3 inches by 3.5 inches by 1 inch, and it weighs roughly twelve ounces. The text size used for the keys ranges from 7- to 12- point.Ĭaption: The Orion TI-84 Plus Talking Graphing Calculator Some of these background/text pairings result in a high contrast scheme, such as the black text used on the white keys of the number pad, but others (like the blue text used to designate the second functions of keys), are more difficult to see. The background and text of the keys vary in color, including white, black, grey, blue, and green. For even more tactile discernment a nib could be added to the 5 key on the number pad. The keys on the Orion are fairly easy to distinguish by touch, with variation from convex to concave for quick recognition. The Orion TI-84 Plus Talking Graphing Calculator is almost an exact replica of the Texas Instruments TI-84 Plus graphing calculator used by sighted students, except the Orion has an additional "add-on" component consisting of11 additional keys located above the calculator's display screen.
This article gives the lowdown about this exciting, innovative product. Being visually impaired, I was delighted when I discovered that the American Printing House for the Blind (APH) and Orbit Research had formed a partnership to create an accessible version of the TI-84 Plus graphing calculator by Texas Instruments. Over the past few years, the fields of science, technology, engineering, and mathematics (STEM) have become hot topics among people with vision loss.
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