Abstract
A braille electronic-calculator, an audible calculator, and a combination paper money identifier and light detector have been introduced by the American Foundation for the Blind. The braille calculator, priced at $345, is a five-function unit (+, −, ×, ÷, %) with an 8-digit display and floating decimal point. A single braille cell, using 4 dots out of the basic 6-dot braille notation to represent numerals 0 through 9, is activated by depressing a “read” button. The digits and decimal point displayed on a visual readout are presented in sequence in the form of small pins which pop up to form a braille digit. Reading speed, adjustable with a control, is variable up to 4 digits per second. The Speech Plus audible calculator, priced at $395, was developed by Telesensory Systems, Palo Alto, California. It has a 24-word vocabulary that announces every entry and result. It has the basic functions of the braille unit plus square root, accumulating memory, automatic constant, change of sign key, floating decimal point, and an 8-digit visual display. The paper money identifier was originally produced in the NASA-sponsored Biomedical Application Program and is now manufactured by EMR, Ltd., Los Angeles. A distinctive tone pattern is generated far each value of paper currency. A single switch change converts the unit into a light detector that can be used to detect lights in a variety of applications such as blinking phone lights, coffee pot “ready” lights, room lights, etc. It is priced at $125. All three devices may be ordered from Aids and Appliances Division, American Foundation for the Blind, 15 W. 16 St., New York, N.Y. 10011.