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Sharp WriteView EL-W531 Calculator Scientific Battery-power 4-line 335 Functions 2-key Rollover The EL-W531TL performs over 420 advanced scientific functions and utilizes WriteView Technology, 4-line display and Multi-Line Playback to make scientific equations easier for students to solve. It is ideal for students studying general math, algebra, geometry, trigonometry, statistics, biology, chemistry, and general science. Hard cover protects from scratches. Entering and showing results as done in a text book (WriteView) Large dot matrix LCD display, 96 x 32 dots 420 built-in functions Battery power Independent cursor keys 9 Memories Power Auto Power Off Yes Battery 1 x LR44 Power Battery General Barcode 4974019967523 Model Name EL-W531TL Product Family WriteView Product Type Scientific Calculator General Functions Calculation Functions Scientific Calculator Type Handheld General Functions Square Root Physical Colour(s) Black Form Factor Calculator Pack Quantity 1 Protective Cover Yes Display Display Digits 16 Display Form Flat Display Lines 4 Display Type LCD Memory Memory 9 Memory Variables ? Multi-Line Playback ? Last Answer Recall (ANS) Scientific Functions Other Scientific Functions Pi Key ? GCD, LCM ? Quotient and Remainder Calculation ? Training (DRILL) Function ? 3-Digit Punctuation Scientific Functions Binary, Octal, Hexadecima ? Coordinate Conversion ? Fractions ? General Calculation ? Logic Calculations ? Random Number ? Statistics Calculation ? Trigonometric Calculation Total Number of Functions 420