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G2 screen refresh rate (20200121)
01-23-2020, 02:35 PM
Post: #7
RE: G2 screen refresh rate (20200121)
(01-23-2020 10:56 AM)nbenm Wrote:  
(01-23-2020 10:32 AM)grsbanks Wrote:  I'd guess that this was made possible so that you can shift the refresh rate even further away from the local AC frequency of your country.

AC is 50Hz or 60Hz depending on where you are, so HP settled on a 55Hz refresh rate so that it shouldn't be affected by fluorescent lighting. If there are, however, some lingering effects then you can get closer to a 50Hz refresh rate if you're in an area where AC frequency is 60Hz, or closer to 60Hz if AC is at 50Hz where you are.

This said, I don't know what the boundaries are.

Maybe I haven't understood very well, but I can't see the relationship between AC power and a battery powered calculator.

AC powers your light. Some lights flicker - faster than your eye can see
BUT
if the calculator screen refresh rate is close to the flickering light
(the light seems to flicker close 100 Hz here in Finland, in my US visit it was closer to 120Hz)
then the screen also seems to flicker.
To avoid this HP (Cyrille) used ~55Hz screen refresh rate
which is between 60 Hz US AC and 50 Hz EU AC

As you can C (with your eyes as well as your mind)
the battery power of your calculator does not matter in this situation
VPN
_________________________________________________________________
PS: the HP Prime G3 screen refresh should go 80 Hz (in my very humble opinion)
as well as the resolution doubled in both directions 2x by 2y = 640 x 400
add a flag to use the old resolution vs the new one
and truly add a bigger, bold font (and a smaller one as requested by some 20/20 visionist)

What do you say,
Cyrille aka "Wolverine" <- my nickname for Cyrille from the last Millenium
??
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RE: G2 screen refresh rate (20200121) - CyberAngel - 01-23-2020 02:35 PM



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