1 / 4

BASIC TELECOMMUNICATIONS

BASIC TELECOMMUNICATIONS . The Touch Tone Keypad. BASIC TELECOMMUNICATIONS . When the touch tone keypad layout was first being designed , it was arranged similar to an adding machine and calculators.

dobry
Download Presentation

BASIC TELECOMMUNICATIONS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. BASIC TELECOMMUNICATIONS The Touch Tone Keypad

  2. BASIC TELECOMMUNICATIONS When the touch tone keypad layout was first being designed , it was arranged similar to an adding machine and calculators. Western Electric soon discovered that people with experience using adding machines and calculators had memorized the keypads, much like a typist memorizes the typewriter keyboard.

  3. BASIC TELECOMMUNICATIONS This enabled them to enter numbers very rapidly, if you have ever seen an account use an adding machine you realize how quickly they can punch the numbers in. Because they could enter the numbers in so quickly not enough time was allowed between digits for the transmission of the 100ms tones on a touch tone phone

  4. BASIC TELECOMMUNICATIONS Because of this, the current touch tone keypad layout, which does not match adding machines and calculators, was adopted to discourage such fast input Adding machine/calculator keypadTouch tone keypad

More Related