This pocket calculator is a small, portable device designed for performing basic arithmetic operations and, in some cases, advanced mathematical functions. Typically lightweight and battery-operated, these calculators can fit easily into a pocket or bag. Most models offer functions like addition, subtraction, multiplication, and division, while some also include scientific functions such as trigonometry, logarithms, and statistics. Pocket calculators are widely used by students, professionals, and anyone needing quick calculations on the go. Their user-friendly interfaces make them accessible for various users.