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A telephone keypad is a keypad installed on a push-button telephone or similar telecommunication device for dialing a telephone number. It was standardized when the dual-tone multi-frequency signaling (DTMF) system was developed in the Bell System in the United States in the 1960s – this replaced rotary dialing , that had been developed for ...
A push-button telephone is a telephone that has buttons or keys for dialing a telephone number, in contrast to a rotary dial used in earlier telephones.. 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 in a No. 5 Crossbar switching system in ...
The Nokia C3-00 is a QWERTY keypad feature phone with the Nokia Series 40 mobile operating system, released under the Cseries line of phones by Nokia. It features a full 4-line keyboard, like the earlier Nokia 6800 series. It was advertised as an entry-level messaging and social networking phone, retailing at 90 EUR
The model 554 was a wall-mounted version. Other special-purpose models included additional features. This included phones with dial lights (500U), party line sets (501), keysets (540 and 560 series), call directors, panel phones (750 series), industrial and outdoor phones (520 and 525), and automatic dialers (660). [8]
The StarTAC is a series of mobile phones released by Motorola starting in 1996. It is the successor of the MicroTAC, a semi-clamshell design first launched in 1989. [2] Whereas the MicroTAC's flip folded down from below the keypad, the StarTAC folded up from above the display.
Nokia 8210 is a mobile phone by Nokia, announced on 8 October 1999 in Paris. At the time, it was the smallest, lightest Nokia mobile phone on the market. [1] A primary selling point of its design was its removable cover that allowed for easy customization. Six differently coloured Xpress-on covers are available, as well as many third-party ones ...
Keypad used by T9. T9's objective is to make it easier to enter text messages.It allows words to be formed by a single keypress for each letter, which is an improvement over the multi-tap approach used in conventional mobile phone text entry at the time, in which several letters are associated with each key, and selecting one letter often requires multiple keypresses.
The Nokia 3650, sold in North American markets as the Nokia 3600 (triband GSM 850/1800/1900 MHz), is a mobile phone from Nokia announced on 6 September 2002 as the successor to the Nokia 7650. It runs Symbian OS Series 60 (version 1.2). [6] A very distinctive feature of the Nokia 3650/3600 was its unique retro circular keypad. Many owners would ...