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Tested TI-81 Texas Instruments Graphing Calculator - Well Loved
US $14.99
ApproximatelyS$ 19.13
or Best Offer
Condition:
“Good cosmetic and working condition. Screen has some very light scratches. Body has normal signs of ”... Read moreabout condition
Used
An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller抯 listing for full details and description of any imperfections.
2 available
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Shipping:
Free USPS First Class®.
Located in: Baltimore, Maryland, United States
Delivery:
Estimated between Thu, 3 Jul and Thu, 10 Jul to 94104
Returns:
30 days return. Buyer pays for return shipping. If you use an eBay shipping label, it will be deducted from your refund amount.
Coverage:
Read item description or contact seller for details. See all detailsSee all details on coverage
(Not eligible for eBay purchase protection programmes)
Seller assumes all responsibility for this listing.
eBay item number:185585676255
Item specifics
- Condition
- Used
- Seller Notes
- Display Size
- Regular
- Country/Region of Manufacture
- Taiwan
- UPC
- 0033317073122
About this product
Product Information
Engineered for use for algebra and pre-calculus, the TI-81 graphing calculator is a must-have for students. This Texas Instruments model features a 96 x 64-pixel display and built-in software to enter advanced functions.The TI-81 display is large enough to show eight lines. Each line can be up to sixteen characters long. The number result of the calculation is displayed on the following line of the display. There is also plenty of room on the display to show the resulting graphs, and for more detail, you can use the zoom menu. You can adjust the brightness of the display based on the type of contrast you would like.Because of the calculator's built-in memory, you can enter and save up to 37 of your own programs. The memory also enables several features that can save you time. Among those features is the last entry option, which you can use to build on the previous result to save time in your calculations. To access the last answer menu, just press the 2nd key along with "ANS." The keyboard layout is user-friendly and allows you to quickly locate the most common keys for scientific calculations. Keys on the keyboard are grouped by color and function below the display. There are areas for each mode: editing, graphing, advanced function, and scientific calculator keys. The most common commands can be completed with the press of a key. You can access the second set of commands on the keyboard by using the 2nd key. Editing expressions right on the display is simple. Just press the insert or delete key, or press a cursor-movement key to navigate on the screen. Navigating between menus is simple as well. Just press the key associated with each menu.This Texas Instruments calculator is perfect for using to enter data for graphs. The calculator is capable of graphing up to four functions at a time. The memory allows you to save your complex calculations and information you've entered for later use with a simple stroke of a key. The Texas Instruments TI-81 model can perform one and two-variable statistical analysis. You can enter numbers on the keyboard in scientific notation too.The TI-81 calculator provides all the essentials found in other versions, such as all the key software and features of graphing calculators. TI-Basic code is still used. It keeps this standard item affordable and as functional as other calculators.Taking this calculator on the go is no problem, thanks to its compact design and protective slide case. The display will remain protected even in the roughest of backpacks. Two different types of batteries are used. There are four standard size AAA batteries with a lithium battery for backup.The Texas Instruments TI-81 calculator is perfect for the student in your life. Make your mathematical problems easier with this product, or help someone else get an advantage on homework by gifting them this calculator. The perfect complement to a full computer, the TI-81 has all of the information you'll need for a quick start to any math class.
Product Identifiers
Brand
Texas Instruments
MPN
TI-81
UPC
0033317073122
Model
81
eBay Product ID (ePID)
54843142
Product Key Features
Power Source
Battery
Size
Handheld
Key Size
Regular
Type
Graphing
Additional Product Features
Display Type
Large
Additional Features
Case Included
Digit Display
16 Digits
Item description from the seller
Seller feedback (1,250)
- 0***n (65)- Feedback left by buyer.Past monthVerified purchaseThank you for your business! Perfect transaction.
- m***2 (418)- Feedback left by buyer.Past 6 monthsVerified purchaseExcellent seller. Item as described. Fast shipping. Packed well. Wonderful bargain. Thank you so much.
- e***i (685)- Feedback left by buyer.Past yearVerified purchaseA++++++NWT Camelbak KUDU 8 Hydration Pack 3L 100oz Hydration Capacity Impact Protector (#186556620498)
Seller feedback (1,250)
- 0***n (65)- Feedback left by buyer.Past monthVerified purchaseThank you for your business! Perfect transaction.
- m***2 (418)- Feedback left by buyer.Past 6 monthsVerified purchaseExcellent seller. Item as described. Fast shipping. Packed well. Wonderful bargain. Thank you so much.
- e***i (685)- Feedback left by buyer.Past yearVerified purchaseA++++++NWT Camelbak KUDU 8 Hydration Pack 3L 100oz Hydration Capacity Impact Protector (#186556620498)