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By adelz7
#22485
Current calculator watches are too impractical and difficult to use for people with big hands. Even normal handed folk have problems pressing tiny buttons.

So how about a watch with circular-knobs on both sides (like old-fashioned watches)? Turn the dial up and the digits go up fairly quickly, and vice-versa. Design the watch to have these knobs on both sides.

To work it, first you press a button on the top which toggles it to choose between multiplication, division, etc.

Then, you turn the first knob, the second knob, etc. Then voila! The answer appears.


The ordering can also be :
1. enter first number.
2. Enter operation.
3. Enter second number.

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