Assistive technology is an umbrella term that includes assistive, adaptive, and rehabilitative devices for people with disabilities while also including the process used in selecting, locating, and using them.
Braille is a tactile writing system used by people who are visually impaired.
A braille embosser is an impact printer that renders text as tactile braille cells.
English Braille, also known as Grade 2 Braille, is the braille alphabet used for English.
A refreshable braille display or braille terminal is an electro-mechanical device for displaying braille characters, usually by means of round-tipped pins raised through holes in a flat surface.
Computer software, or simply software, is a generic term that refers to a collection of data or computer instructions that tell the computer how to work, in contrast to the physical hardware from which the system is built, that actually performs the work.