Prices are checked against each store and labelled with when.
It checks today's price at every store, compares the alternatives and answers in about a minute.
The Casio ClassWiz FX-991SP CW is a non-programmable scientific calculator with a high-resolution dot-matrix LCD that shows 4 to 6 lines. It uses Casio's Natural Textbook Display, so fractions, roots and integrals appear as they do in a textbook, and an icon menu replaces key combinations for modes. It runs on solar with a battery backup rated around two years. It suits secondary and university students in math, physics and engineering who need a capable scientific calculator without graphing. Against graphing models it is lighter and simpler; against basic scientific rivals it adds the high-resolution multi-line screen, nine variables and a hard case.
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The Casio Classwiz FX-991SP CW is a non-programmable scientific calculator without graphing. It has an icon menu and a high-resolution dot-matrix liquid crystal display with 4-level shading. The display shows expressions as they appear in a textbook and gives messages in full, without abbreviations.
It handles basic and parenthesis calculations, fractions, percentages, ratios, factorials and rounding. It also covers advanced work such as complex numbers, matrices, vectors, base-N calculations, logic operators, simultaneous and polynomial equations, inequalities, differentiation and integration. A spreadsheet, a number table and a list-based STAT editor are included. The statistics tools cover 1-variable and 2-variable statistics, regression and distribution calculations.
Other functions include SOLVE, Verify, Undo, Replay and a MathBox with coin toss, dice roll, number line and unit circle. It also has scientific constants, metric conversion and prime factorization. It runs on solar power plus a battery, with automatic power off. A hard case is included.
