Up for auction, 2  fantastic Texas Instruments TI-83 Plus Calculator, Silver Edition with case, in excellent condition, and  Black without case, in great condition, sold as is.  Only used for 1 semester of college.

Long the standard for students, the TI-83 Plus has all the essential functions, and is equipped with electronically upgradable flash technology.  16-character, 8-line display 160KB flash memory, 24KB RAM 7 different graphing styles help to differentiate graphs drawn Advanced statistics functions, including hypothesis testing and calculation of confidence intervals Probability distributions Complex number calculations Financial functions, including time value of money, cash flow and amortization Electronically upgradeable flash memory USB (cable sold separately) Powered by 4 AAA batteries (not included)