Fully tested and working.
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Display technology: LCD dot matrix. Display size: 4 lines by 24 char. May I collect the item in person?.
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This compact, pocket-sized model features solar power and a wide range of scientific functions, making it ideal for students, engineers, or collectors. All buttons and the display have been tested and function correctly.
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Great overall condition. The battery may need replacing it turns on when pressed.
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eBay
The "Bubble Strip" that enlarges the LED digits in these two TI calculators has 7 bubbles, unlike later TI calculators, which have 9 bubbles. It was a 7-bubble strip that the propmakers installed in the Graflex clamp of Luke's lightsaber in Episode 4, "A New Hope".
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Model: TI-89 Titanium. Statistics plots including scatter, xy-line, box and modified box plots; histograms and regression lines are available. Extensive programming capability. Hexadecimal and binary operations and conversions.
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eBay