Casio fx-4500P • Release Year: 1989 (Made in Japan) • Display: Dot-matrix LCD screen supporting full text alphabet characters and formulas. • Dimensions & Weight: Compact pocket size measuring 142 x 73 x 9 mm, weighing approximately 90 grams. • Capabilities: Handles trigonometric, hyperbolic, logarithmic functions, coordinate transformations, permutations/combinations, fractions, engineering symbols (femto to tera), statistical analysis, numerical integration, and base conversions (binary, octal, decimal, hexadecimal). • Programming: Features formula and text programming with 26 standard variables (expandable up to 163) and over 1,100 program steps. Casio fx-82TL (1998) The Casio fx-82TL is a classic scientific calculator that was very popular in the late 1990s and early 2000s, particularly in secondary education. It is the successor to the original fx-82 models and is known for its reliability and the introduction of the S-V.P.A.M. system (Super Visually Perfect Algebraic Method). The calculator's will be packed carefully.