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JOT scientific calculator


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Post: #2
08-19-2013, 04:22 PM
Richard Berler Offline
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$1 calculator at Dollar Tree. Has trig, hyp-trig, ln/log, y^x, unexpected: x root of y, conversions between rectangular and polar, deg.xxxx to degree,min,sec, basic stats, complex number (only -,+,*,/). Pretty remarkable for $1. Pocketable. Atrocious keyboard... horrid,horrid unit, yet remarkable what they can get into a $1 unit!

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Post: #3
08-19-2013, 05:23 PM
Gerson W. Barbosa Offline
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Quote:
horrid,horrid unit, yet remarkable what they can get into a $1 unit!

Sold in bulks of 24, however.

http://www.dollartree.com/10-Digit-Scientific-Calculators/p300303/index.pro

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Post: #4
08-19-2013, 06:04 PM
sjthomas Offline
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But in the brick-and-mortar stores you can buy individual units.

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Post: #5
08-21-2013, 08:21 AM
Eddie W. Shore Offline
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I have one of those $1 store calculators. The keyboard is awful. The keys are rubbery.

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Post: #6
08-21-2013, 05:25 PM
Richard Ottosen Offline
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Quote:
Pocketable. Atrocious keyboard... horrid,horrid unit, yet remarkable what they can get into a $1 unit!

And that is if the calculator works. Many don't work right out of the package. Before buying in a store you want to poke the keys through the package and at least verify that all of the display segments activate.


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I have one of those $1 store calculators. The keyboard is awful. The keys are rubbery.

I have opened one up. The switches under the buttons are a membrane keyboard. The membrane uses what looks like carbon ink for the traces and contacts. Obviously silver would be way too expensive.
There is a shim/stiffener beneath the keyboard made out of cardboard!

I got my dollar's worth just seeing the insides. :-)

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