HP 40gs - Graphing calculator - USB, serial - battery, memory backup battery

HP 40gs - graphing calculator

Key Features and Benefits: Built for performance Dynamic split screen with adjustable contrast for greater readability. 256KB total memory for greater storage capacity and increased performance. 600+ built-in functions plus powerful HP Solve and other innovative applications. Built-in library of 29 constants and easy metric unit conversions- ideal for math and science. USB or serial ports for connecting to PCs and other devices to download, print and share data. Math features include Algebra features: factorization, expansion, substitution, systems of linear equations, linear algebra and matrices, among others. Trigonometry (trigonometry functions/inverses and Hyperbolic functions/inverses, degrees, radians). Lists and sequences. Exponential and logarithmic functions. Permutations, combinations and factorials. What's Included: Calculator, slide-on protective cover, batteries, user manual, USB cable, unit-to-unit cable and CD with connectivity software, Aplets and advanced user manual