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HP 15C Issue with screen refresh
04-09-2021, 01:57 PM
Post: #4
RE: HP 15C Issue with screen refresh
Of course not Smile

Also, after thinking about your question for a while, I remembered this article mentioning 2:1 multiplexing in some displays vs 4:1 multiplexing in other variants. That might have something to do with it - you might be able to deduce that from the serial numbers in the article.

http://www.brouhaha.com/~eric/hpcalc/voy...iants.html

These two display driving methods have their pros and cons - 2:1 has a minimal better contrast and less ghosting, while 4:1 needs less pins on the display driver. If I remember correctly, later models used 4:1 and are therefore more susceptible to ghosting.
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RE: HP 15C Issue with screen refresh - damaltor - 04-09-2021 01:57 PM



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