Sharp Scientific Calculators 273 Functions EL-531TH Color: White, Gray, Green The EL531TH performs over 273 advanced scientific functions and utilizes a 2-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, and trigonometry. In addition, it can be used for statistics, biology, chemistry, and general science. Hard cover protects from scratches. Basic Description Display Type: 2 lines Number of Display Digits: 10 Power Source: Battery Battery Type: AAA x1 Automatic Power Down: yes Keys: Plastic Protective Case: yes Dimensions: 161 x 80 x 15 mm Weight: 115 g Mathematical Functions Built-In Functions: 273 Entry System: Algebraic (D.A.L.) 1/x, x², square root, %: yes Pi Key: yes GCD, LCM: no Quotient and Remainder Calculation: no Fractions: yes Function Table: no Equation Solver (Newton): no System of Linear Equations: no Matrix and Vector Calculations :no Numeric Derivative and Integral: no Complex Number Calculation: no Training (DRILL) Function: no Memory Multi-Line Playback: yes Last Answer Recall (ANS): yes Memory Variables: 9 Notation and Decimal Places FSE Display (SCI, FIX, ENG): yes 3-Digit Punctuation: yes Statistics 1-Variable Statistics: yes 2-Variable Statistics: yes Regression Calculations: 6 Mean, Standard Deviation: yes nCr, nPr, n!: yes Random Numbers: yes Trigonometric Functions Deg, Rad, Grad Modes : yes Sin, Cos, Tan, and Inverses : yes Hyperbolic Functions: yes Sexagesimal and Decimal Conversions: yes Rectangular and Polar Coordinates Conversions: yes Number Systems Bin, Pen, Oct, Hex, Dec: yes Logical Operation (AND, OR, NOT, NEG, XOR): yes