How the Telecommunications Device for the Deaf (TDD) Works (359 words, 2 pages)
Telecommunications Device for the Deaf (TDD)In 1963, Robert Weitbrecht developed a large acoustic coupler.This device has helped with breaking down the communication barrier betweenthe Hearing and Deaf communities. This device today is called the TTY,which is short for Teletypewriter. Today, most people who use thesemachines call them TDD, which is ...
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