Requires a Wolfram Notebook System
Interact on desktop, mobile and cloud with the free Wolfram Player or other Wolfram Language products.
Do not show again
Press buttons to hear the two frequency tones corresponding to each key.
Contributed by: Stephen Wolfram (March 2011)
Open content licensed under CC BY-NC-SA
"Simple Phone Dialer"
Wolfram Demonstrations Project
Published: March 7 2011
Take advantage of the Wolfram Notebook Emebedder for the recommended user experience.