LadyButterfly she/her@piefed.blahaj.zone to Science Memes@mander.xyzEnglish · 5か月前I dunnolockpiefed.cdn.blahaj.zoneimagemessage-square761fedilinkarrow-up1817
arrow-up1817imageI dunnolockpiefed.cdn.blahaj.zoneLadyButterfly she/her@piefed.blahaj.zone to Science Memes@mander.xyzEnglish · 5か月前message-square761fedilink
minus-squarebrown567@sh.itjust.workslinkfedilinkEnglisharrow-up41·5か月前2 5 8 5 - × + for you RPN fans =)
minus-squarechonglibloodsport@lemmy.worldlinkfedilinkEnglisharrow-up4·5か月前Actually: 2 <enter> 5 <enter> 8 <enter> 5 - x + 10 keystrokes I use RPN on my phone calculator for fun but it can also be annoying sometimes. On my CASIO FX-260 Solar II calculator (super cheap, really nice and simple but also powerful) that would be: 2 + 5 ( 8 - 5 ) = 9 keystrokes
minus-squareexcral@feddit.orglinkfedilinkEnglisharrow-up4·5か月前You could do 8 <enter> 5 - 5 × 2 + -> 8 keystrokes
minus-squarechonglibloodsport@lemmy.worldlinkfedilinkEnglisharrow-up2·5か月前But that’s a specific optimization where you can no longer read the numbers left to right, the original intent of RPN.
minus-squareNindelofocho@lemmy.worldlinkfedilinkEnglisharrow-up3·5か月前Im terrible at math, what is this though?
minus-squareMimicJar@lemmy.worldlinkfedilinkEnglisharrow-up24·edit-25か月前RPN or Reverse Polish Notation is a notation for calculators to be less ambiguous. The last numbers use the operator to their right, repeat. So no need for parenthesis or PEMDAS. 2 5 8 5 - × + (8 - 5 = 3) 2 5 3 × + (5 × 3 = 15) 15 2 + (15 + 2 = 17) 17
minus-squareNindelofocho@lemmy.worldlinkfedilinkEnglisharrow-up5·5か月前This might actually help me thank you!
minus-squareNindelofocho@lemmy.worldlinkfedilinkEnglisharrow-up3·5か月前This might actually help me thank you!
2 5 8 5 - × + for you RPN fans =)
Actually:
2 <enter> 5 <enter> 8 <enter> 5 - x +
10 keystrokes
I use RPN on my phone calculator for fun but it can also be annoying sometimes.
On my CASIO FX-260 Solar II calculator (super cheap, really nice and simple but also powerful) that would be:
2 + 5 ( 8 - 5 ) =
9 keystrokes
You could do
8 <enter> 5 - 5 × 2 +-> 8 keystrokes
8 5 - 5 * 2 + CR .
But that’s a specific optimization where you can no longer read the numbers left to right, the original intent of RPN.
Im terrible at math, what is this though?
RPN or Reverse Polish Notation is a notation for calculators to be less ambiguous. The last numbers use the operator to their right, repeat. So no need for parenthesis or PEMDAS.
This might actually help me thank you!
Reverse Polish Notation
This might actually help me thank you!
See also