overall: 4 3/4 in x 13 in x 12 1/2 in; 12.065 cm x 33.02 cm x 31.75 cm
Object Name:
kit
communications system
TTY
ttd
Date made:
ca 1976
Description:
A TTY is a teletype device that can be used to send written messages over telephone lines. A TDD is similar but smaller. The first TDD, introduced in 1973, used Light Emitting Diodes (LEDs) and Complementary Metal Oxide Semiconductors (CMOs). It was designed by Kit Patrick Corson, a deaf news anchor and interpreter; Art Ogawa, a physicist; and Michael Cannon, founder of Micon Industries.
Barbara Liss Chertok purchased this TTD for $625 in 1976. She hade become deaf at age 21 by Cogan’s Syndrome, and devoted herself to the movement to improve life for people who are deaf or hard of hearing.
Ref: “Woman overcomes obstacles / Barbara Chertok bridges hearing impaired, hearing,” Washington Jewish Week (Feb. 8, 1996).