FREE: Scientific Calculator

The listing, Scientific Calculator has ended.

The HP30S's built-in arithmetic functions include +, -, *, /, %, 1/x, +/-, plus ln, X, ex, n!, yx, log x, 10x, x², and pi. Additional functions include fractions, trigonometry, hyperbolic, root finder, and statistical analysis. The algebraic entry is intuitive, and no worries if you make a mistake--simply edit the command-line history. Scientific features are broad as well, ranging from polar/rectangular and angle conversions to decimal hours, minutes, seconds conversions and arithmetic unit conversions. The calculator can convert fractions to decimals as well as decimals to fractions.
If you are a high school student, then this calculator is for you. It has everything you need, for algebra, precalculus, and calculus. The good thing about the 83+ is that it is upgradable, so the need for a new calculator doesn't arise, every few years. Purchasing a graph-link can add on a TREMENDOUS amount of programs to use for Physics, Geometry, and even 3D-Graphs, (previously only on the ti-89 and up). If you are in High School, do NOT get the ti-92 or ti-89, because they will probably be banned from standardized tests, and high math classes, so ask your math teacher, because they are too hard to use and understand. Also, these 2 calculators are aimed for more college-level students, so if you are in college, try the ti-89. But in every case, a ti-83+ is ideal!