... called voice recognition programs, allow people to give commands and enter data using their voices rather than a mouse or keyboard. * Speech synthesizers (often referred to as text-to-speech (TTS) systems) receive information going to the screen in the form of letters, numbers, and punctuation marks, and then "speak" it out loud. Using speech synthesizers allows blind users to review their input as they type. * Refreshable Braille displays provide tactile output of information represented on the computer screen. The user reads the Braille letters with his or her fingers, and then, after a line is read, refreshes the display to read the next line. * Braille embossers transfer computer generated text into embossed Braille output. Braille translation programs convert text scanned in or generated via standard word processing programs into Braille, which can be printed on the embosser. * Talking word processors are software programs that use speech synthesizers to provide auditory feedback ...

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