A minor difference between the HP 15c CE and the original HP-15C (and LE)

[Valentin Albillo]

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Hi, J-F,

J-F Garnier Wrote:On the new 15c CE, there is no noticeable display blink when you press a key such as x<>y or Rv, contrary to the original 15c or even the 15c LE (to a lesser extent).

Yes, I've noticed the same: when pressing some key which performs a fast functionality which leaves the display unchanged, it seems like nothing happened at all though the function was indeed performed. I also find this somewhat unsettling and wish some kind of feedback would happen on those cases.

Also, quite related, I posted this at the end of one of my recent HP-15C CE threads:

• Once R/S is pressed to start the timing of the matrix inversion routine, my CE immediately displays one or two running messages in very quick succession, then the display remains blank for the whole duration of the loops. This seems very similar to what happens with the dreaded LE's PSE (Pause) bug (except there's no PSE instruction whatsoever in my routines,) so perhaps the cause is somehow related.
  
  On the other hand, if timing the determinant routine, upon pressing R/S a single running message is immediately displayed once and it stands still, never blinking or blanking till the timing process ends. All in all, I find the display of the running message to be quite haphazard, sort of yet "unfinished business".

V.