Hi definition images of the HP-19C decimal dot



#2

The HP-19C and HP-10 had a unique feature, the decimal dots in their displays had the HP logo on them. Given the size of the dot and its high contrast wrt the background, taking a good picture of the dot has so far proven to be almost impossible.

Now ji (of http://www.tla.org) has taken some excellent pictures showing the dot, and also revealing that the display had another dot allowing it to display a : (why?)

**vp

Edited: 24 Oct 2005, 11:55 p.m.


#3

Why? At a guess, for use in timepieces.

Best,

--- Les

[http://www.lesbell.com.au]

#4

note that the letters "hp" and the circle appear dark red because of red light reflected from the display window. The actual emitting surface appears pinkish, as it has saturated the sensor.

/ji

#5

Waow!

Great pictures, Ioannis!!

I feel a little bit ashamed to propose my own Low definition pics:

In the Led Eye


Don't forget to click on "Slideshow".


Well done again, yours are beautiful!!

Etienne


Possibly Related Threads...
Thread Author Replies Views Last Post
  Sending little images to the Prime (...and Program name bug?) Erwin Ried 19 661 12-10-2013, 05:35 PM
Last Post: Erwin Ried
  Another HP 35 Red Dot on eBay Michael de Estrada 5 310 11-09-2013, 03:07 PM
Last Post: aj04062
  How to save the definition of a CAS program or CAS function ? dg1969 3 219 10-19-2013, 01:48 PM
Last Post: dg1969
  [HP_Prime] definition of functions, APPLY command and BUGs CompSystems 1 176 09-05-2013, 03:59 PM
Last Post: CompSystems
  HP-Prime CAS nice images CompSystems 9 423 08-28-2013, 12:00 PM
Last Post: Juergen Keller
  Binary versus Decimal prefixes bill platt 22 775 04-27-2013, 11:22 AM
Last Post: Walter B
  Decimal/Binary Conversions for the HP 39gii - 3/16/2013 Eddie W. Shore 0 140 03-16-2013, 04:30 PM
Last Post: Eddie W. Shore
  [41CL]Updating ROM images with a Clonix Dan Grelinger 14 600 02-13-2013, 10:41 AM
Last Post: Ángel Martin
  Looking for scans of a HP-19c Box ledudu 5 269 01-20-2013, 06:13 AM
Last Post: Lode
  Newest 41CL ROM Images Dan Grelinger 2 161 01-16-2013, 01:25 PM
Last Post: Monte Dalrymple

Forum Jump: