Question about Tech Solution TS-900 Calculator

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Looking for a Tech Solution TS-900 or TS-950 calculator


I am looking to purchase a Tech Solution TS-900 or TS-950 calculator and have not been successful in my search. PLease help or direct me in the right direction.



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  • Anonymous Aug 15, 2008

    I too am looking for a TS-900

    (636) 537-5229


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Need instructions for the MU, CST, SEL, MAR keys and what the arrow key is for above the MU key.

Just Google search (brand/model) user manual for instructions, as you don't indicate which calculator you have!

May 09, 2016 | Office Equipment & Supplies

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If the screen on the calculator is cracked and mostly black looking , is there a way to fix that or is it easier to just purchase a new one?

Not exactly knowing what kind of Texas Instrument calculator you possess, I would recommend that you purchase a brand new one unless you can find a broken one of the same kind and use it as a test to disassemble and check the glass.

Dec 14, 2011 | Texas Instruments Office Equipment &...

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Hi, can i calculate the gamma function on a casio fx83-gt plus?

Let us first call each thing by its name. If you are looking for the Gamma function , the one defined by the integral from 0 to infinity of t^(n-1) *e^(-t), look no further. It it does not exist on your scientific calculator.
However, if you are looking for the factorial function ( the !) then you can access it by pressing [SHIFT][x^-1].

It is true that the Gamma function reduces to the factorial function when its argument is a positive integer, but I do not believe we should use the names indiscriminately. Sorry if that ruffles some feathers.

Apr 26, 2011 | Casio FX-115ES Scientific Calculator

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What calculator would you recommend for polar and rectangular formula's?

Are you serious?
No calculator purchase should be solely based on such a trivial matter.
But if you are looking for a very good scientific calculator, I would suggest the new Write View EL-W506/W516/W546 calculators by Sharp, or the FX-115ES/991ES Natural Display by Casio.

With these calculators you can see what you enter displayed as in textbooks. Naturally, they all do coordinates conversions from Polar to Rectangular and from Rectangular to Polar.

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Do you have a battery L1131 for the TS 450?

I don't, but you can order one from

Jan 30, 2010 | Tech Solution Office Equipment & Supplies

1 Answer

I am looking for the user manual for the Citizen

can you please tell me all the method to close the citizen calculator which do not have closing button

Jun 06, 2009 | Office Equipment & Supplies

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Potential Purchase

If you want to do that do not buy an 83 or 83+. all the 84's and all the 89's come with usb chords so you can hook them up to the computer, now how you do that i don't know cause i use an 83. You would have to do more research. I hope this can help. GOOD LUCK

Feb 01, 2008 | Texas Instruments TI-84 Plus Silver...

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On/off button doesnt turn on

normally if you spill any type of liquid that would certainly affect your calculator from working- i would say that you need to have it replaced

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Looking for users guide for construction master iv

The closest I could come up with was the operations manual from the predecessor model IV. It contains lots of examples, not simple key usage. Go to this page and look for the link just below the words "PRODUCT DETAILS" ZT3000 "Beta tester of "0"s and "1's"

Aug 19, 2007 | Calculated Industries Construction Master...

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