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Re: [Calculator] Design problems

 

While I'm a huge fan of RPN, it's not at all familiar to almost everybody (except we engineering types). It's why no-one ever borrows my calculator...

Till later,
Scott.

On 04/03/13 19:45, Michael Wild wrote:
Just a request from the side-line: please add a RPN mode, the way that HP calculators do it. Entering formulas that involve a lot of sub-expressions is just so much more natural when you can evaluate them separately, leave them on the stack and then process them further by popping them off the stack. E.g. the stationary example would then be entered as

1.05
<ENTER>
5
×
10.00
<ENTER>
7
×
28.79
<ENTER>
8
×
+
+

Essentially it's reading the formula "inside-out", much the way you do when you think about it. There's no need to remember to put the brackets in the right places, no need to plan ahead. The landscape view could display the expressions that lead up to this value on the stack, so it's easier to remember what it contains. Long expressions would need to be abbreviated, of course, but could be expanded/scrolled through by the user when tapped or swiped.


Cheers

Michael


On Mon, Mar 4, 2013 at 10:16 AM, Calum K Pringle <calum.pringle@xxxxxxxxxxxxx <mailto:calum.pringle@xxxxxxxxxxxxx>> wrote:

    Hi Dalius, everyone, and good morning!

    I guess you've all been looking at calculators over the weekend!
    I've just caught up with my mail and we will go through these
    threads later today. We'll answer these questions in a reply as
    soon as we can (promise).


    Calum Pringle
    Interaction Designer

    Canonical Design Team
    m: 0773 9317055
    e: calum.pringle@xxxxxxxxxxxxx <mailto:calum.pringle@xxxxxxxxxxxxx>



    On 3 Mar 2013, at 14:08, Dalius wrote:

    Hi,

    On Sun, Mar 3, 2013 at 2:52 PM, Bruno Girin <brunogirin@xxxxxxxxx
    <mailto:brunogirin@xxxxxxxxx>> wrote:

        Now what you would do with 8 pairs of scissors is another
        question: Edward Scissorhands Halloween costume?

    This or office administrator in (small) company.

    Thanks for other ideas. We will definitely use something + I
    believe designers are reading as well.

    Regards,
    Dalius
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