# HOW DO I GET OFF RPN - HP 12c Calculator

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• HP Master

The HP 12c is a purely RPN calculator; it does not have an algebraic mode.

To switch the HP 12c Platinum to algebraic, press f [ALG].

Posted on Aug 23, 2010

• 1 more comment
• kakima Aug 23, 2010

Just to clarify: the first statement is for the non-Platinum HP 12c. The two models share a name and a lot of common functionality, but by no means are identical.

• tslater438 Aug 23, 2010

HI
MY HP12C is now stuck on alg......... this is on readout area. how do i clear this and just use 12c as reg calc
thanks
Tom

• kakima Aug 23, 2010

One of the two indicators ALG and RPN is always going to be there (as long as the calculator is turn on), to indicate which mode it's in.

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## Related Questions:

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I take it you mean a 12C Platinum.

Press f ALG. ALG is the f-shifted function of the EEX key, just above the double-size ENTER key. This will switch the 12C Platinum from RPN mode to Algebraic mode, and ALG indicator will light up instead of the RPN indicator.

To switch back to RPN, press f RPN. RPN is the f-shifted function of the CHS key just above the EEX key.

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Press SHIFT [MODE] then down-arrow until you get to "Algebraic" or "Chain" depending on the current mode then INPUT until you get to "RPN." Press ON when done.

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### How do you put HP 30b in RPN mode?

Press SHIFT [MODE] then down-arrow until you get to "Algebraic" or "Chain" then INPUT until you get to "RPN." Press ON when done.

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### For my HP 12C (not a platinum) how do i get back into RPN mode?

I checked the manual, the image of the face of the calculator and there is no way to change the entry mode from RPN to Algebraic. Your calculator is still in RPN, it is the only mode it has. Reset it.

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### I have a 12C (not a Platinum!), and I can not get back to RPN mode

I checked the manual, the image of the face of the calculator and there is no way to change the entry mode from RPN to Algebraic. Your calculator is still in RPN, it is the only mode it has. Reset it.

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Press f ALG to switch to the Algebraic mode.

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To switch to the algebraic mode press f [ALG] (the EEX key).

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Assuming you have a 12C Platinum, press f [RPN] to switch from the algebraic to the RPN mode. [RPN] is the shifted function of the CHS key on the top row of the keyboard.

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Check out Toshiba's download center. I found the following Display drivers available (since you did not specify which Windows you're using).

• Vista (32-bit) ATI Display Driver: http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/modelContent.jsp?ct=DL&os=&category=Display&moid=1998649&rpn=PSAE3U&modelFilter=A205-S5861&selCategory=2756709&selFamily=1073768663#
• Vista (64-bitl) Inte Display Driver: http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/modelContent.jsp?ct=DL&os=&category=Display&moid=1998649&rpn=PSAE3U&modelFilter=A205-S5861&selCategory=2756709&selFamily=1073768663#
• Win 7 (32 and 64-bit) ATI Display Driver: http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/modelContent.jsp?ct=DL&os=&category=&moid=1998649&rpn=PSAE3U&modelFilter=A205-S5861&selCategory=2756709&selFamily=1073768663#
• Win 7 (32-bit) Intel Display Driver: http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/modelContent.jsp?ct=DL&os=&category=&moid=1998649&rpn=PSAE3U&modelFilter=A205-S5861&selCategory=2756709&selFamily=1073768663#
Pick which ever one matches your graphics and operating system.

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### How do I put my HP19BII Calculator back into RPN mode?

Press the [Yellow key] then[DISP] to access the MODES. Press the [MORE] tab (first key to the right) then select [RPN]

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