Used Texas Instruments Graphing Calculator
Missing a line of pixels.

Features:
16-character, 8-line display
192KB 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) and unit-to-unit connectivity (cable sold seperately)
Powered by 4 AAA batteries




Algebra, geometry, trigonometry, pre-calculus, calculus, physics, chemistry, and biology.