Telephone keypad - Alchetron, The Free Social Encyclopedia
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Telephone keypad - Alchetron, The Free Social Encyclopedia
A telephone keypad is the keypad installed on a pushbutton telephone or similar telecommunication device for the primary purpose of dialing a telephone number. It was standardized when the dualtone multifrequency signaling (DTMF) system was developed in the Bell System in the United States in the
May 29, 2018
Telephone keypad History
Md Israfeel on Instagram: "technical name for the symbol commonly known as the hash, pound sign, or number sign. Coined by Bell Labs engineers in the 1960s, the term combines "octo-" (referring to the eight points) and "thorpe" (possibly referring to athlete Jim Thorpe or just a suffix). It is used in telephony, programming, and social media. Key details about the octothorpe: Origin: Created for telephone keypads by Bell Telephone Laboratories employees around 1964-1968. Names: Also called a has
0:50
Md Israfeel on Instagram: "technical name for the symbol commonly known as the hash, pound sign, or number sign. Coined by Bell Labs engineers in the 1960s, the term combines "octo-" (referring to the eight points) and "thorpe" (possibly referring to athlete Jim Thorpe or just a suffix). It is used in telephony, programming, and social media. Key details about the octothorpe: Origin: Created for telephone keypads by Bell Telephone Laboratories employees around 1964-1968. Names: Also called a has
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