RPN or DAL?

October 30, 2006 at 5:37 pm · Filed under Thoughts

RPN or DAL?
CASE A: Solve the following expression: (8 6)(7 – 5)

With a normal calculator, assuming you have memory functions, you have to enter:

[8][ ][6][=] [M ] [7][-][5] [x] [MR] [=]

while, with an RPN calculator you just enter:

[8][ENTER][6][ ] [7][ENTER][5][-] [x]
—
i guess the thing here is that theres a stack with the 8 and 6 piling up and the 7 and 5 go with whats in the stack.

RPN required only 9 keystrokes instead of the 11 required by a standard calculator.

1 Comment »

  1. Duprost. said,

    July 21, 2008 @ 5:48 pm

    Duprost.

    Duprost.

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