HP SmartCalc300s Calculators

Weight: 120 grams.

Power System: Solar powered with 1 x LR44 battery as back-up. Auto-power off 5 to 10 minutes.

Added features: , memory calculations, snap-on protective cover.

Math functions: Sign change, +, /, -, x, =, square root, %, fractions, mixed numerals, fraction to decimal conversion, sexagesimal (degree, minute, second), variables (A, B, C, D, X, Y), trigonomic, inverse trigonometric, exponential, logarithmic, powers, factorial (!), absolute value (Abs), random number, rounding, polar-rectangular conversions, permutation and combination.

Entry-system logic: Algebraic

Display: (TFD), 31 x 96 pixel LCD display.

HP Part number: F2240AA.

HP SmartCalc 300 have Text Book Display (TBD) which allows to see the question as you see them on the paper. It has 249 built-in