Why is the phone keypad different than the calculator?

asteroid
2018-09-16T22:02:32Z

Link URL: https://uxdesign.cc/a-brief-history-of-the-numeric-keypad-59112cbf4c49

Comments URL: https://tildes.net/~tech/6gh/why_is_the_phone_keypad_different_than_the_calculator

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