Question about HP 12c Calculator
That depends on what you want to do with the 1 and the 2. If you want to add them together, for example, you would press
1 ENTER 2 +
If you wanted to multiply them together, you would press
1 ENTER 2 *
It's not free, but you can order the HP-11C manual from
There's also a fairly good tutorial on RPN there at
Posted on Sep 15, 2011
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Posted on Jan 02, 2017
Tips for a great answer:
1.) ' 2 - 5 ' = ' -3 ' = 3
2.) 0 - 6 ' = ' -6 ' = 6
4.) 8' + '?4' = 8 + 4 = 12
5.) 1 ? '?1' = 1 ? 1 = 0
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