Matches in DBpedia 2014 for { ?s ?p The push-button telephone is a telephone that uses buttons or keys for dialing a telephone number to place a call to another telephone subscriber.Western Electric experimented as early as 1941 with methods of using mechanically activated reeds to produce two tones for each of the ten digits and by the late 1940s such technology was field-tested. But the technology proved unreliable and it was not until long after the invention of the transistor when push-button technology matured.. }
Showing items 1 to 1 of
1
with 100 items per page.
- Push-button_telephone comment "The push-button telephone is a telephone that uses buttons or keys for dialing a telephone number to place a call to another telephone subscriber.Western Electric experimented as early as 1941 with methods of using mechanically activated reeds to produce two tones for each of the ten digits and by the late 1940s such technology was field-tested. But the technology proved unreliable and it was not until long after the invention of the transistor when push-button technology matured.".