Texas Instruments TI-89 Titanium Graphing Calculator
- 160 x 120 pixel LCD, graphic display
- 188KB RAM and 2.7MB ROM memory
- Battery powered per the listing
- Hard case listed in the features
- 14.4 ounces listed weight
- 10.8 x 7.6 x 2.3 inches listed overall size
Updated 25 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A Texas Instruments graphing calculator for students who need on-screen plots and a roomy memory. The listing says little about functions or exam rules, so confirm course requirements before buying.
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ASIN: B000KUIKGQModel: TI-89Category: Graphing Calculators
Overview
A high school math room or a college study desk is the setting for the Texas Instruments Titanium, a battery powered graphing calculator with a pixel LCD for plotting graphs. Memory is split between RAM for working files and ROM for the system.
Students get a graphing display and a large memory split in a device built for coursework. The listing gives no function list, no exam approval notes and an unclear battery line, so check those details with the course before buying.
Who it's for
Students in algebra, calculus or engineering classes who want graphs on screen will get the most from it. Those who only need basic arithmetic or a rechargeable device should look elsewhere, since the listing shows battery power only.
Pros and cons
- Graphing LCD shows plots on screen
- Large ROM for the built-in system
- Battery power, no outlet needed
- Hard case listed in the features
- Function list not listed
- Battery requirement wording is unclear
- Small screen per the listed size
Performance notes
Results depend on the pixel resolution of the LCD, which sets how fine a plotted curve looks, and on the memory split, since RAM holds working programs while ROM holds the system. Battery charge governs how long a study session lasts.
Specifications
| Brand | Texas Instruments |
|---|---|
| Model | TI-89 |
| Dimensions & fit | |
| Item weight | 0.9 pounds |
| Item dimensions | 10.8 × 7.6 × 2.3 inches |
| Screen size | 1.2 inches |
| Power & efficiency | |
| Power source | Battery |
| Construction & materials | |
| Enclosure material | Titanium |
| Color | Gray |
| Other details | |
| Calculator type | Graphing |
| Display type | LCD |
| Memory | 188KB RAM, 2.7MB ROM |
| Case | Hard |
| Display resolution | 160 x 120 pixels |
Frequently asked questions
Does the TI-89 Titanium listing describe its math functions or exam approval?
No. The listing covers the graphing LCD with a 160 x 120 pixel display, 188KB RAM, 2.7MB ROM, battery power and a hard case. Check function and exam details with Texas Instruments or your school.
What batteries does the TI-89 Titanium use?
The specs say battery powered and read 1 A batteries required, which is unclear. Confirm the battery type before buying spares.