Calculator input methods refer to the various ways in which users can enter data or commands into a calculator. Depending on the type of calculator—whether it's a basic calculator, scientific calculator, graphing calculator, or software-based calculator—different input methods may be employed. Here are some common input methods: 1. **Button Input**: Most calculators have physical keys (buttons) that users press to enter numbers and operations. Each button corresponds to a specific digit, operation (e.g.

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