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HP 28C Scientific Calculator

I have the above calculator and would like to use it, but I don't have the manual and don't know what type of batteries to buy. Could you tell me the type and voltage? I know there are three of them.

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  • mofrid Dec 09, 2008

    My error, it should be HP 28S for scientific!!

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1 Answer

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  • HP Master
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It takes three N cells, 1.5 volts each.

Posted on May 31, 2014

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SOURCE: casio fx-82ES scientific calculator

change the mode to stat and then start operating it in statistical mode

Posted on Feb 26, 2008

  • 333 Answers

SOURCE: instruction manual for Casio fx -991 Scientific calculator

There are plenty of casio 991 manuals here. Take your pick!
http://safemanuals.com/zearch_160.php

Dom't forget to leave feedback if it solves your problem. 'fixya'!

Posted on May 01, 2008

  • 1 Answer

SOURCE: How do you put the fourth root into scientific calculator

Do whatever the number is then ^(1/4)

Posted on Jun 02, 2009

  • 7993 Answers

SOURCE: Inputing scientific notation into my calculator

Hello,

1. To convert a number to scientific equation, use [2nd][Sci]
Exemples 12345 [=] screen shows 12345 Then [2nd][Sci] coverts it to 1.2345 ^04 to the power 4.
2. To enter directly a number in scientific notation (e.g. -1.2345 X10^(-65) a very small number) you use the [EE] key 1.2345[+ /-][EE][+/-]65 shows as -1.2345 -65
1.6X10^(-19) 1.6[EE][+/-]19 shows as 1.6 -19

Hope it helps

Posted on Sep 17, 2009

  • 7993 Answers

SOURCE: is the CAsio Scientific calculator fx-82TL a

Hi,
Sorry to disappoint you: This calculator is not programmable.

Good luck.

Posted on Nov 30, 2009

Testimonial: "Very much appreciated, quick response etc. "

6ya6ya
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Posted on Jan 02, 2017

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I HAVE REPALCED THE BATTERIES AND IT WILL NOT POWER ON.


The HP 32SII calculator has a very common problem with the keyboard connections. There might be nothing else wrong with the calculator except the contacts.

Try pinching the calculator just below the middle of the screen above the [LN] and [Y^x] keys while pushing the [C] button to power it on.

If this worked, at least you know where the problem is. Fixing that problem temporarily, some users wrap a rubber band around the calculator at that point and put something under it to keep pressure on that spot.

The longer-term fix is harder and involves taking the calculator apart to replace a foam pad to keep pressure on the plastic keyboard contact strip against the printed circuit board contacts.

Somebody (not me) put together an Instructables page for the HP 17B calculator, which is built exactly the same as the 32SII.
HP 17b series calculator repair

Nov 30, 2015 | HP 32Sii Scientific Calculator

1 Answer

3437S84165


Here is a link to Samson Cables (in Utah) that has some English copies for sale.

Samson Cables HP 20S Scientific Calculator Owner Manual Details

Aug 04, 2014 | HP 20S Scientific Calculator

1 Answer

Binary operation in hp 10 s


I am sorry to say but the calculator does not handle Base-N calculations. It only has three calculation types :General (basic) COMPutations, Standard deviation calculation, and regressions.

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Mar 31, 2012 | HP 10s Scientific Calculator

1 Answer

My HP 10s Scientific calculator does not switch on what could be the problem, is it maby because the calculator was left in a drawer and now the batery ran flat hou can I charge it on the solar power...


You can't charge the calculator off the solar power panel. The solar power panel merely conserves battery power when using the calculator in a bright environment. Try putting in a new battery and see whether the calculator turns on.

Aug 25, 2010 | HP 10s Scientific Calculator

1 Answer

I have an HP 12C calculator and I cannot find the user manual and I cannot remember how to change the no. of decimal places?


Check this HP FAQ:
Setting a Fixed Decimal Place You can download the manual and user guides for your calculator from here:
http://h10025.www1.hp.com/ewfrf/wc/manualCategory?lc=en&dlc=en&cc=us&product=81575&lang=en&

For more information, Faqs & how-Tosgo the HP support homepage for your calculator:
http://h10025.www1.hp.com/ewfrf/wc/product?lc=en&dlc=en&cc=us&lang=en&product=81575&
s.gif
Introduction This document describes how to set the desired number of decimal places on the HP 12c calculator in standard format. It also covers how to enter a number in scientific notation. Instructions for standard format
  1. Press and release c01774993.jpg .
  2. Press the number key for the desired number of decimal places to be displayed to the right of the decimal point (0 through 9). The calculator displays a maximum of 10 digits.
The display will show the specified number of decimal places. The answer will be rounded to the number of digits selected. Example (standard format) If the number in the display is 14.87456320, the display will be changed as follows: Keystroke Display c01774994.jpg 14.8746 c01774995.jpg 14.9 c01774996.jpg 15 c01774997.jpg 14.87456320 Instructions for scientific notation Use scientific notation for very large or very small numbers. Type in the mantissa. After pressing, c01774998.jpg the next numbers keyed in are exponents of 10. Press c01774569.jpg . If during an operation a result has more than 10 digits, the calculator automatically displays the number in scientific notation
s.gif
Introduction This document describes how to set the desired number of decimal places on the HP 12c calculator in standard format. It also covers how to enter a number in scientific notation. Instructions for standard format
  1. Press and release c01774993.jpg .
  2. Press the number key for the desired number of decimal places to be displayed to the right of the decimal point (0 through 9). The calculator displays a maximum of 10 digits.
The display will show the specified number of decimal places. The answer will be rounded to the number of digits selected. Example (standard format) If the number in the display is 14.87456320, the display will be changed as follows: Keystroke Display c01774994.jpg 14.8746 c01774995.jpg 14.9 c01774996.jpg 15 c01774997.jpg 14.87456320 Instructions for scientific notation Use scientific notation for very large or very small numbers. Type in the mantissa. After pressing, c01774998.jpg the next numbers keyed in are exponents of 10. Press c01774569.jpg . If during an operation a result has more than 10 digits, the calculator automatically displays the number in scientific notation

Aug 24, 2009 | HP 12c Calculator

2 Answers

User manual for the scientific calculator HP 8s


Hello,
I can't locate any information regarding an HP 8s Scientific Calculator, but I can locate information on a HP 9s Scientific Calculator. Perhaps they are similar in function. From the HP web site, please check out the link below.

I hope this helps!
- CBR2009

http://h10032.www1.hp.com/ctg/Manual/bpia5267.pdf

Oct 10, 2008 | HP 8S Scientific Calculator

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