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![Telephone keypad - Wikipedia, the free encyclopedia](https://www.iarticlesnet.com/pub/img/site/s_33.jpeg)
Telephone keypad - Wikipedia, the free encyclopedia
瀏覽:552
日期:2024-07-15
A telephone keypad is a keypad that appears on a "Touch Tone" telephone. It
was standardised when the dual-tone multi-frequency system in the new ......看更多