(HP-67) The Use of a Programmable Pocket Calculator in Clinical Dietetics

[Dieter]

(12-29-2018 07:56 PM)Thomas Klemm Wrote:  Of course that should rather be:

Code:

1            01

Err... yes, of course.
Actually it should better be...

Code:

EEX         -23
2            02

;-)

(12-29-2018 07:56 PM)Thomas Klemm Wrote:  I remember that the colour of the thermal paper initially was a blue that was hard to photocopy.
That was much better later with the black paper.

Is or was blue really such a problem? What about copying handwritten text with blue ink then? There are also lots of books (including HP's own Application Pac manuals) that contain printed listings produced by the HP97 and other printing HP calculators. But I admit I have never tried a photocopy of such output.

(12-29-2018 07:56 PM)Thomas Klemm Wrote:  Cf. page 268:

Our studies are based on Goggin and Lawrence's experience (Goggin and Lawrence, 1975 a, 1975 b) with a renal "diet-package" for the calculator Hewlett-Packard-65. We developed their ideas to encompass later models of the HP-65 and for application to dietetics in general.

So it was indeed the HP65. But there were not many options at that time. Maybe a TI SR-52. ;-)

Dieter