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Pi Time



Collection

Quick facts:

  • Count: 18 graphing calculators (12 distinct models), 0 of which are prototypes
  • By series: 13x TI-Z80, 1x TI-eZ80, 3x TI-68k, 0x TI-Nspire, 0x TI-PET, 1x TI-Other, 0x NumWorks
  • Oldest one: a TI-81 manufactured in September 1990
  • Latest one: a TI-84 Plus CE manufactured in March 2015

Calculator model Factory Datecode HW Rev. Serial number Software version(s) Physical condition Extras Acquisition date Photo & Comment
I 0990 pre-A 0929933 1.1K Good 2018 No backup battery. Grey-pixel LCD.
I 0292 A 0250267 1.6K Broken 2018 Dismantled for parts. Grey-pixel LCD.
I 0596 R 43312150 19.0 Good Manual(s) 2015 Fine ribbon cable repairs.
I 0100 1120V04287 Boot 1.05 / Base 2.0.9 Worn 2019 Corrosion repairs.
I 0194 K 13021351 Original 16.0 / Installed 18.0 Fair First calculator in my collection. Swapped LCD from the 1094Q and repaired fine ribbon cable. Swapped ROM chip from the 1094Q to improve contrast.
I 0499 B 12021494 1.00 Fair 2018 Corrosion repairs.
I 0396 I 40477655 10.0 Good 2017 Overclocked. Fine ribbon cable repairs.
I 0700 K 1391010560 1.6 Good Manual(s) 2018 Overclocked Personal favorite
TI-84 Plus CE
Color: Radical Red 
L 0315 pre-A 1033005165 Boot 5.0.0.0089 / Base 5.3.0.0037 Good Manual(s) 2016
I 0293 B 02105073 1.8K Fair 2019 Overclocked. Blue-pixel LCD. Case swap with the I-0292A.
TI-81
ViewScreen
I 0893 E VB0801447 V2.0V Good 2019 Untethered VSC port. Serial number sticker on the inside. VSC daughterboard serial 000272. Grey-pixel LCD.
I 0796 V1208460 1.11 Good 2020
S 0203 B 2074013709 Boot 1.00 / Base 1.19 Good 2021 Coarse ribbon cable repairs. Preloaded with Base 1.14.
TI-80
ViewScreen
I 0495 B 050132 4.0 Good Manual(s), CD(s) 2021 Fine ribbon cable repairs. TI Graph Link for TI-80 software floppy.
I 1094 Q 24033863 18.0 until I removed the chip Broken 2021 Heavily corroded mainboard. Dismantled for parts.
I 0699 O 43910669 1.10 Fair 2021 LCD row blanks. 83 Plus style housing. Z180 MPU ASIC with ZiLOG branding.
I 0197 I 51050886 10.0 Good 2021 Fine ribbon cable repairs. (150C iron to the glass/cable connection)
TI-73
ViewScreen
I 0901 A 1411V001161 1.50 Fair 2021 Dings and scratches. Repaired V+ line to LCD.