Question about HP 20s Calculator

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I no longer have the manual of my HP 20S calculator and need to know how to do Log functions. Help!!

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To calculate the decimal LOG of a positive number, you type in the number, then press the LEFT SHIFT (Blue ) key followed by the key LN, the third from the top left on the 1st row of keys. To calculate Natural logs (LN), enter the number followed by a press of the LN key (see above).

Posted on Jan 13, 2012

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Please use the following link to download the manual for your calculator.
http://www.devicemanuals.com/guide/Calculator/HP/HP-20s-Scientific-Calculator-Owner's-Manual-==TVRFME5UWTE=.html

Posted on Aug 28, 2010

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According to the manual, either arrow should work. I would try the other arrow and the C key.

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

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Here is a link to Samson Cables (in Utah) that has some English copies for sale.
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I need a manual on how to operate the calculator i have borrowed it from a friend and need to do my maths homework


The 20s is a "reverse polish notation" calculator. If you want to find 5x6, you will use the following keystrokes: [5] [ENTER] [6] [x]
The brackets are just to show the keys. The operator (the [X] button in this case) is applied to the last two numbers in the display.

Mar 02, 2010 | HP 20s Calculator

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I have not been able to find one in English, anywhere. I only found one in Spanish on the HP Spain website. If you want the link, post here and I will be happy to give it to you. Alternatively, you can look for it yourself on HPSpain.
And if you do not post back, I will understand that you ain't interested.

Feb 14, 2010 | HP 20s Calculator

2 Answers

Need a manual


I have not been able to find one in English, anywhere. I only found one in Spanish on the HP Spain website. If you want the link, post here and I will be happy to give it to you. Alternatively, you can look for it yourself on HPSpain.
And if you do not post back, I will understand that you ain't interested.

Feb 14, 2010 | HP 20s Calculator

2 Answers

We need to download a guide and manual for an HP 20s calculator


Hi,
I have not been able to find one in English, anywhere. I only found one in Spanish on the HP Spain website. If you want the link, post here and I will be happy to give it to you. Alternatively, you can look for it yourself on HPSpain.
And if you do not post back, I will understand that you ain't interested.

Bye.

Nov 29, 2009 | HP 20s Calculator

1 Answer

I NEED TO DO LOG 10 CALCULATIONS THAT I HAVE NOT DOEN FOR YEARS AND DO NOT HAVE THE INSTRUCTIONS HADY. cAN YOU HELP ME WITH DRIVING THE 20S?


Hello,
Enter the (positive) number , press [Left Shift: blue][LOG] to calculate log in base 10
12 [Left Shift][LOG] gives 1.079181246.
In general Functions in blue are accessed with left shift. functions in Yellow/Orange are accessed with RIGHT SHIFT.
As to the manual, there is not any around in the Web,except the Spanish version at hp Spain. This is one instance where it pays to speak in (foreign) tongues.
If you want the link, post to this thread and I will be happy to supply it.

Hope it gets you back in gear.

Oct 04, 2009 | HP 20s Calculator

1 Answer

I need to know how to do logs with a hp 20 scientific calculator


Hello,

12 [LN] gives 2.484906650 natural logarithm (ln) of 12
12 [LEFT SHIFT: blue] [LOG] gives 1.079181246 : common log of 12
Hope it helps

Mar 29, 2009 | HP 20s Calculator

1 Answer

My HP 20S has 'BEGIN' on the display, how do I get it off?


Click the link below to get instructions to reset your calculator... http://h10025.www1.hp.com/ewfrf/wc/document?docname=bpia5294&cc=us&lc=en&dlc=en&product=60738&dlc=en&lang=en

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