Message #2 Posted by Geoff Quickfall on 21 Dec 2007, 12:19 p.m.,
in response to message #1 by Nick Taylor
The experts will correct me if I am wrong but I think that it is a design function; i.e. done on purpose.
The logic goes like this, if you run, say the diagnostic test as you did and instead of flashing, the screen was blank for the complete 90 seconds, how would you know the calculator was actually doing something?
It goes back to the early computers with multi light displays (1950 - 60's). If the computer stopped running at a certain point then the light display could be used to interpret where the program stopped.
I think that is also why the HP 41 series have the flying goose instead of a blank display also. I replace my goose with the 'aview'; WORKING or THINKING just for effect.
I use the flashing screen display on my 67 in the cockpit as a bit of computer humour, 'the calculator is thinking'.
Cheers, and Merry Christmas
Edited: 21 Dec 2007, 1:05 p.m.