Old silver and black typewriter keys. Think Enigma machine...

On Sat, Jul 21, 2018 at 3:28 PM Chuck McCown <[email protected]> wrote:

> I must be nuts.
> I am working on a calculator project that uses nixie tubes for a display.
>
> I want to use a telephone magneto to charge up a cap to run the thing.
> Kinda a steam punk RPN HP type of calculator.
> I am stuck on what to use for buttons.  I am thinking elevator buttons.
>
> Large oak case.  Just crank it for 10 seconds and then do  your
> calculation.
>
> I am also conflicted as to how many buttons.
> Square and square root for sure.
> Undecided about log, trig functions and whether or not to have scientific
> notation.  I think I will.
> How many digits to display?  Probably 5.  Engineering mode only.  3 dot 2
> display.
> Also considering multiple lines to show 4 levels of the stack but I doubt
> I will actually do that.
>
> The question is: will I ever finish this thing?
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