Calculator

Some common features of calculators include:

1. Numeric keypad: A set of buttons for entering numbers and arithmetic operations.
2. Display screen: A screen that shows the numbers and calculations as they are entered and computed.
3. Memory functions: Some calculators have memory functions that allow users to store and recall numbers or previous calculations.
4. Basic mathematical functions: All calculators have basic mathematical functions such as addition, subtraction, multiplication, and division.
5. Scientific functions: Advanced calculators may include functions for trigonometry, logarithms, exponents, and other mathematical operations.
6. Financial functions: Some calculators have features for financial calculations such as interest rates, present and future values, and amortization schedules.
7. Programmable functions: Some advanced calculators can be programmed to perform specific calculations or functions.