A calculator is a compact electronic device essential for mathematical computations. It features a digital screen and enables users to perform basic operations like addition, subtraction, multiplication, and division. More advanced models offer functions such as square roots, percentages, and scientific notations, catering to diverse needs. Calculators are prevalent in academic, scientific, financial, and professional contexts, ensuring precision and efficiency in mathematical tasks. They come in various forms, including handheld, desktop, and software applications, accommodating different preferences. From simple arithmetic to intricate scientific calculations, calculators are indispensable tools that expedite numerical problem-solving, making them a ubiquitous part of our daily lives.