22 Section 1: Getting Started

Calculations

One-Number Functions

A one-number function performs an operation using only the number in the display. To use any one-number function, press the function key after the number has been placed in the display.

Keystrokes Display

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Two-Number Functions and v

A two-number function must have two numbers present in the calculator before executing the function. +, -, * and ÷ are examples of two-number functions.

Terminating Digit Entry. When keying in two numbers to perform an operation, the calculator needs a signal that digit entry is terminated for the first number. This is done by pressing vto separate the two numbers. If, on the other hand, one of the numbers is already in the calculator as the result of a previous operation, you do not need to use the v key. All functions except the digit entry keys themselves* have the effect of terminating digit entry.

Notice that, regardless of the number, a decimal point always appears and a set number of decimal places are displayed when you terminate digit entry (as by pressing v).

Chain Calculations. In the following calculations, notice that:

The v key is used only for separating the sequential entry of two numbers.

The operator is keyed in only after both operands are in the calculator.

The result of any operation may itself become an operand. Such intermediate results are stored and retrieved on a last-in, first-out basis. New digits keyed in following an operation are treated as a new number.

*The digit keys, +, , , and .