A calculator is an electronic device or software tool used to perform mathematical calculations, ranging from basic arithmetic to advanced scientific, financial, and graphing functions. Calculators come in various forms, including physical handheld devices, computer software, and mobile apps.
Types of Calculators:
- Basic Calculators
- Performs simple arithmetic (addition, subtraction, multiplication, division).
- Example: Standard pocket calculators (e.g., Casio HS-8VA).
- Scientific Calculators
- Handles advanced math (trigonometry, logarithms, exponents, roots).
- Used by students and engineers (e.g., Texas Instruments TI-30X, Casio fx-991EX).
- Graphing Calculators
- Plots graphs, solves equations, and performs calculus.
- Common in high school/college STEM courses (e.g., TI-84 Plus, Casio fx-CG50).
- Financial Calculators
- Computes interest rates, loan payments, and investments.
- Used in business/finance (e.g., HP 12C, Texas Instruments BA II Plus).
- Programmable Calculators
- Allows custom functions/scripts for repetitive tasks.
- Example: HP Prime, TI-89 Titanium.
- Online & App Calculators
- Web-based (e.g., Google Calculator, Desmos) or mobile apps (Calculator++).
- Specialized Calculators
- BMI calculators, currency converters, date/time calculators.
Key Features:
✔ Memory Functions – Store and recall values.
✔ Equation Solvers – Some solve algebraic/calculus problems step-by-step.
✔ Unit Conversions – Switch between metric/imperial, angles (radians/degrees).
✔ Battery/Power Options – Solar, battery, or rechargeable (for physical models).
Popular Calculator Brands:
- Texas Instruments (TI) – Leading in graphing/scientific calculators.
- Casio – Affordable and reliable options.
- HP (Hewlett-Packard) – Known for financial/RPN calculators.
- Sharp & Canon – Basic and printing calculators.