Why won’t calculators turn on when you hit any button?

December 1, 2011 · 2 comments

I have seen a number of calculators and observed that most of them will turn on only if you hit a dedicated on/off or c/ac button. They won’t turn on if you just hit any random button, which really sucks because when I hit “9”, I want to see “9” on the display and continue my calculation. But this isn’t happening.

If I were an accountant, I would complain. But since I am not an accountant, I am only curious.

Calculators should be made to react on any button. Since most calculators are powered by solar anyway, accidental turn-ons won’t even harm the battery. It’s just a little something that has to be done to keep up with user expectations.

Casio, please take a note. Screw “on” and “off” buttons.

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umanbn December 3, 2011 at 9:16 pm

I guess that’s to stop them turning on by accident when they’re stuffed in your pocket with chewing gum and conkers…..

Itchy Bites December 7, 2011 at 11:04 pm

Well, most calculators spend 99.9% of their life time on the desk rather than in the pocket or a bag. Even when they are placed in the bag or someone’s pocket, they should be designed to turn off after 15-30 seconds of inactivity after the first click. This will ensure fair use of the battery. Besides, each journey from point A to B typically lasts no longer than 1 hour, so I think this scenario should not be decisive as to whether calculators should be activated with any button. If you are interested, you can follow the discussion on Youtube, link above.

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