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Giving an Old Phone a New Purpose I’d like to make use of the phone as more than a desktop conversation piece. To that end, I’ve put an ESP32 system-on-chip (SoC) module into the phone. The ESP32 ...
A dedicated row of number keys is nice, but in some cases—like, say, when you’re typing phone or credit card numbers into an online form—a full-on numeric keypad is even better.
A calculator has the 7–8–9 buttons at the top whereas a phone uses the 1–2–3 format. Subtle, but puzzling since they serve the same functional goal — input numbers.
This EzKEY combo mouse and keypad might be just what you’re looking for if you’re on the road, suddenly need to add a long list of numbers, and your laptop doesn’t have a keypad.
The native Cistercian system is limited to numbers between 1 and 9,999, so we’ll guess that the keypad just outputs the Arabic numeral corresponding to the Cistercian key pressed and doesn’t ...
A standard phone keypad consisting of the numbers from 0 to 9 and including the signs "*" and "#". Alphanumeric keypads are an upgrade to those and are used to enter text as well as numbers.
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