Light spectrum on HP Prime


Hello, I made a program displaying (in colour :)) the light spectrum and some information about ranges :

Direct download



Very nice, thanks for sharing this.

I'd be interested in your thoughts on how you programmed this and any source code fragments of interest. Was it easy enough to display a graphics area, with text underneath? Did you simply draw coloured lines next to each other using the commands that the hp prime provides. Did you find the programming experience on the hp prime enjoyable? - or difficult and fiddly.


Hi Andy, thank you for your interest. I just draw lines in Loops by changing colours with counters.
Programming on HP Prime is a real pleasure with all the possibilites and the very high speed execution.

You can see the code by editing the program with the emulator or the connectivity kit.

Possibly Related Threads…
Thread Author Replies Views Last Post
  Calculators usable in dim light Marcel Samek 10 2,823 03-09-2013, 01:08 PM
Last Post: Eddie W. Shore
  Light Scratches on 12c Bezel - Steel Wool? Matt_12c 4 1,696 04-10-2011, 01:36 PM
Last Post: Matt_12c
  Bright Light From The Dark Side Joerg Woerner 29 6,240 10-22-2010, 09:17 AM
Last Post: Eddie W. Shore
  "First Light" Monte Dalrymple 23 5,336 06-29-2010, 05:02 PM
Last Post: Monte Dalrymple
  World statistics in a new light designnut 4 1,422 08-31-2009, 05:36 AM
Last Post: Howard Owen
  HP35s in the Press (Spectrum Magazine Oct 2007) Chris McCormack 5 1,768 10-13-2007, 01:54 AM
Last Post: brian healy
  Red light left of display on Spice (32E) Olivier TREGER 8 2,252 06-28-2007, 11:49 AM
Last Post: Olivier TREGER
  hp97 red light wancho 4 1,309 03-29-2006, 10:57 AM
Last Post: David Smith
  "Yellowed" Spice Keys (originally light beige) Luis 4 1,403 07-19-2002, 05:29 AM
Last Post: Andreas Stockburger (EU)
  HP-9825B Light go on but no display Joost Backus 0 670 05-24-2002, 04:22 AM
Last Post: Joost Backus

Forum Jump: