HP15C displays gibberish. Is it broken?
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10-07-2020, 07:32 PM
Post: #23
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RE: HP15C displays gibberish. Is it broken?
(10-06-2020 05:56 PM)GreyUser Wrote: ... if you have Tony Duell’s schematic...Could you point me to the schematic you are talking of please? (10-06-2020 05:56 PM)GreyUser Wrote: The display pattern shown on the failed unit of the OP is a processor/r2d2 comms failure...As a newbie, can you help me with the jargon: OP? r2d2? comms stands for communications, right? (10-06-2020 05:56 PM)GreyUser Wrote: Due to the way the display is multiplexed ... you could never create that exact display with a loss of connectionsVery interesting~~ |
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