TDD Telecommunications System
date: label: date made
content: ca 1976
notes: label: Description
content: 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.
label: Description
content: 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.
label: Description
content: Ref: “Woman overcomes obstacles / Barbara Chertok bridges hearing impaired, hearing,” Washington Jewish Week (Feb. 8, 1996).
label: Location
content: Currently not on view
topic: label: Subject
content: Disabilities
setName: label: See more items in
content: Medicine and Science: Medicine
creditLine: label: Credit Line
content: Barbara L. Chertok
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1996.0177.05
label: accession number
content: 1996.0177
label: catalog number
content: 1996.0177.05
label: catalog number
content: 1996.0177.05.2
label: catalog number
content: 1996.0177.05.3
label: serial number
content: 2D673
objectType: label: Object Name
content: kit
label: Object Name
content: communications system
label: Object Name
content: TTY
label: Object Name
content: ttd
physicalDescription: label: Measurements
content: overall: 4 3/4 in x 13 in x 12 1/2 in; 12.065 cm x 33.02 cm x 31.75 cm