Until recently, the Speech Plus was one of the few calculators that were accessible to visually handicapped individuals. A variety of other voice-output calculators are now on the market. An evaluation of five—the Canon SP-1260-D, Panasonic JE-1650U and JE-720U, Sharp El-620, and Speech Plus—indicated that most can easily be used by visually handicapped people and that personal preferences concerning size and the variety of functions offered may be the determining factors in choosing a calculator. Descriptive information is presented on all five calculators.
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References
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GoodrichG., BennettR. R., & WileyJ. K. (1977). Calculators for the visually impaired user: An evaluation.Journal of Visual Impairment & Blindness, 71, 154–57.
