Hewlett Packard 9825A 9872A



#3

I have a framed image (using red, blue and black ink) looks like it was generated mathematically with a computer.
Its says BIRTHDAY DEMO on the top left corner and
HEWLETT-PACKARD SYSTEM 9825A/9872A on the top right corner.
Framed size is 11 inches by 14 inches<P>
I do not know if this is a demo for someone's birthday or a demo for the birthday of the System 9825A/9872A.
There is no date to be found anywhere on the framed image or back of the frame.

Anyone have any ideas?

I can send a jpg of the image if interested?

Norman


#4

The "Birthday Demo" was a program supplied on tape with the 9825 computer/9872 plotter system. The program prompted for your birthdate and using this input as a seed, plotted a diagram of vectors unique to your birthdate. I remember that it was fascinating to watch the plotter " do its thing " , and produced an image for everyone in my family based on their birthdate.


Possibly Related Threads...
Thread Author Replies Views Last Post
  Connecting a 9825A to the outside world David Ramsey 3 1,041 06-12-2013, 04:13 AM
Last Post: Tony Duell
  HP-9825A I/O David Ramsey 3 985 06-06-2013, 11:23 PM
Last Post: David Ramsey
  A Guide for the Restoration of Hewlett Packard Calculators Jim Johnson 8 1,572 04-13-2012, 03:16 AM
Last Post: Geoff Quickfall
  Facebook page created for Hewlett Packard Calculators Gene Wright 15 2,331 10-03-2011, 07:57 AM
Last Post: Andrés C. Rodríguez (Argentina)
  Whitman Is Named Hewlett-Packard Chief Peter Murphy (Livermore) 21 2,750 09-24-2011, 08:25 AM
Last Post: Eddie W. Shore
  9825A use 9121 disk drive? David Ramsey 0 489 05-11-2011, 04:03 PM
Last Post: David Ramsey
  OT: For Sale: Bill Hewlett’s 1987 Chevy Suburban Steve Leibson 5 984 03-22-2010, 05:40 PM
Last Post: Etienne Victoria
  The Oldest Hewlett-Packard IC,s never die. (Two) julio garcia (spain) 6 1,271 01-25-2009, 09:38 AM
Last Post: Saile (Brazil)
  The oldest Hewlwtt-Packard IC,s never die. julio garcia (spain) 0 486 01-13-2009, 01:22 PM
Last Post: julio garcia (spain)
  Hewlett Packard HP 82164A HP-IL / RS-232C and 71b michael mcgrath 4 1,011 02-24-2008, 07:47 PM
Last Post: Raymond Del Tondo

Forum Jump: