Calculator Community > Other Calculators
TI-81 Screen Types?
olivermadsen:
I have a TI-81 around my house somewhere. It was used maybe a little to heavily until it's unfortunate demise in the -45˚C(-50˚F) weather in Alaska. It had bluish pixels though.
CVSoft:
Looking around on Datamath and eBay, they all appear to be first-generation TI-81s manufactured in the second half of 1992, which is immediately before the release of the TI-82. I'm not sure if it had to do with a limited supply of the screens or just profit-reaping.
CVSoft:
(hopefully acceptable necrodoublepost) After browsing through several hundred eBay listings, they were all manufactured between mid 1992 and early 1993, with hardware B. It also includes ViewScreen models, but I am unsure about the attached screen. I also noticed that the first-generation TI-81s without backup batteries are quite common.
DJ Omnimaga:
Yeah I have the second wave of 1st gen calc with OS 1.1K or something, which also lacked the battery. IIRC the early 81's have a memory-mapped screen and display is much faster than on the TI-84 Plus in some cases.
CVSoft:
TI did switch the hardware around a lot on the 81. I have a later TI-81 (2.0V, hardware revision F) and it doesn't have the memory-mapped screen. I've taken pictures of partial characters on the screen, mid-refresh.
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