Texas Instruments
Texas Instruments TI-81 Graphing Calculator
Discount sale today while supplies last!
$74.99
- SKU:
- 100172
- MPN:
- TI-81
- Condition:
- Refurbished
- Warranty Information
- 90 Day Exchange Warranty! Buy with confidence. We offer helpful customer service and support for all our products from sale to installation.
- Availability:
- Currently In Stock! Due to the nature of our inventory this item will only be in stock for a short period of time. Quantity available for bulk purchases
- What's Included:
- Calculator and Cover
Description
The Texas Instruments TI-81 is a classic graphing calculator designed for algebra, trigonometry, and pre-calculus coursework. With a large LCD display and user-friendly interface, the TI-81 allows students to plot graphs, perform complex equations, and visualize mathematical concepts with ease. It’s an ideal tool for classrooms, test prep, or professional use where reliability and precision matter.
Key Features:
- Graph multiple functions and analyze intersections, roots, and maximum/minimum points
- Handles scientific, trigonometric, logarithmic, and statistical calculations
- Built-in matrix and list operations for algebraic problem solving
- LCD display with clear, high-contrast viewing for graphs and data
- Battery-powered portability with long-lasting performance
Refurbishment & Warranty:
- Fully refurbished and tested by Porter Electronics technicians for accuracy and reliability
- Cleaned, inspected, and guaranteed to function like new
- Backed by a 90-Day Exchange Warranty for peace of mind
What’s Included:
- Texas Instruments TI-81 Graphing Calculator
- Protective slide cover
- Downloadable user manual
Ideal For:
- High school and college students in algebra, trigonometry, and pre-calculus
- Teachers looking for reliable classroom calculators
- Professionals and hobbyists who prefer vintage TI performance and design
Warranty Information
90 Day Exchange Warranty! Buy with confidence. We offer helpful customer service and support for all our products from sale to installation.
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