05-01-2014 03:07 PM
My HP 12C calculator is not calculating correctly. For example, when I type in a simple equasion such as 5*6 I get 36, or 2*9 gives me 81. I am not exactly sure if I hit a button by mistake which is causing the calculator to do this, or if something is not working correctly. Any insights are appreciated it!
05-01-2014 04:20 PM
The 12C uses RPN entry for calculations, so 5*6 is done as:
5 Enter 6 *
and 2*9 is done as:
2 Enter 9 *
This might seem cumbersome at first, but works well for longer expressions.
I suggest you read the following:
and especially the section "learning RPN":
Hope this helps.