Need your advice for a visually impaired person

[Thomas Okken]

(09-01-2017 01:14 PM)rprosperi Wrote:  

(09-01-2017 11:29 AM)Thomas Okken Wrote:  Or maybe it uses red to indicate negative numbers? That would be consistent with the black/red output from the printer.

That would be cool, and I don't think I've ever heard of a calculator with this feature; is anyone aware of this being done before?

There is a manual available here, but it is only in German. If a German reader could check it out and let us know, it would be appreciated.

Wrong model -- that link is for the CPD-5212; the CPD-512 manual is at http://www.olympia-vertrieb.de/fileadmin...100322.pdf (multi-lingual).
It does say that negative numbers are shown in red on the printer, and with a minus sign in the display. I find no mention of display color whatsoever.