The Museum of HP Calculators

HP Forum Archive 21

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JOT scientific calculator
Message #1 Posted by Richard Berler on 19 Aug 2013, 4:22 p.m.

$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!

      
Re: JOT scientific calculator
Message #2 Posted by Gerson W. Barbosa on 19 Aug 2013, 5:23 p.m.,
in response to message #1 by Richard Berler

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

            
Re: JOT scientific calculator
Message #3 Posted by sjthomas on 19 Aug 2013, 6:04 p.m.,
in response to message #2 by Gerson W. Barbosa

But in the brick-and-mortar stores you can buy individual units.

                  
Re: JOT scientific calculator
Message #4 Posted by Eddie W. Shore on 21 Aug 2013, 8:21 a.m.,
in response to message #3 by sjthomas

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

                        
Re: JOT scientific calculator
Message #5 Posted by Richard Ottosen (Denver, CO, USA) on 21 Aug 2013, 5:25 p.m.,
in response to message #4 by Eddie W. Shore

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.

Quote:
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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