Calculator input methods

Ways in which keystrokes are interpreted

There are various ways in which calculators interpret keystrokes. These can be categorized into two main types:On a single-step or immediate-execution calculator, the user presses a key for each operation, calculating all the intermediate results, before the final value is shown. On an expression or formula calculator, one types in an expression and then presses a key, such as "=" or "Enter", to evaluate the expression. There are various systems for typing in an expression, as described below.

This keyword could refer to multiple things. Here are some suggestions: