Texas Instruments TI-83 Plus Graphing Calculator: Special Keys * Flash calculator software applications * Upgradeable operating system * Pre-loaded with periodic table, organizer, catalog help, science tools, start-up, probability simulations, CBL/CBR, puzzle pack and study cards * Defines, saves and graphs 10 rectangular functions, 6 parametric equations, polar equations and 3 recursively defined sequence * Advanced statistics include hypothesis testing, confidence intervals and probability distributions * Finance features include time value of money, cash flows and amortization * Equation solver editor solves for different variables interactively * Handles real and complex numbers, lists, matrices and strings * Supports Z80 assembly language programming * Advanced graphing features including multiple graph styles Texas Instruments TI-83 Plus Graphing Calculator Display * High contrast, 8-line by 16-character display with 64 x 96 pixels * Split screen Memory * 192 KB memory (32 KB RAM and 160 KB user archive memory) * 185 KB user-available memory * Flash ROM technology enables electronic upgradability for software upgrades and new applications Texas Instruments TI-83 Plus Graphing Calculator Additional Features * Hard slide case protects calculator keys * Input/Output port with unit-to-unit cable included * Computer connectivity with TI-Graphlink software (not included) * Allowed for use on the PSAT, SAT I, SAT II Math IC and IIC, AP Chemistry, AP Physics and AP Calculus exams