| QUESTIONS | CATEGORIES | BLOG | PROFILE | Login | Register |
ASK QUESTION
Electronics → Telephones
ANSWERS: 2
  • DillaDolla26
    1962 The first commercial touch-tone phones were a big hit in their preview at Seattle World's Fair.
    No comments
  • Jewels Vern
    4-1-2017 DTMF, Dual Tone Multi Frequency, was invented by Nikola Tesla to demonstrate a radio controlled boat in 1895. The system was applied to the telephone system slowly, from the 60s to the 80s. (Because the phone company insisted on charging extra for touch-tone.)
    No comments

RELATED QUESTIONS

ABOUT ANSWERBAG

Answerbag wants to provide a service to people looking for answers and a good conversation. Ask away and we will do our best to answer or find someone who can.We try to vet our answers to get you the most acurate answers.

Copyright 2023, Wired Ivy, LLC

Answerbag | Terms of Service | Privacy Policy