Texas Instruments TI-83 Plus Graphing Calculator is well built and in super condition with the following features offered to you:
Permitted for use on SAT, PSAT/NMSQT, ACT, AP, IB and Praxis exams
Offers large 64 x 96 pixel, 8 x 16 display; 24KB of RAM; and 160KB Flash ROM memory
Also graphs 3 recursively-defined sequences; TVM, cash flows, amortization, and complex numbers
Enhanced data analysis (logistic and sine regressions); offers I/O port with unit-to-unit link cable
Powered by 4 AAA batteries (included) and a lithium battery backup to protect RAM memory
You won't find an excellent calculator like this on any other website for under $30, but you can get this rare amazing deal ONLY here for JUST $20!