## fx-82MS

fx-85MS

fx-220 PLUS

fx-300MS

fx-350MS

(2nd edition / S-V.P.A.M.)

## Before Using the Calculator

## Calculation Modes and Calculator Setup

## Basic Calculations

- ▶Inputting Expression and Values
- ▶Arithmetic Calculations
- ▶Fraction Calculations
- ▶Percent Calculations
- ▶Degree, Minute, Second (Sexagesimal) Calculations
- ▶Multi-Statements (fx-82MS/fx-85MS/fx-300MS/fx-350MS only)
- ▶Using Engineering Notation
- ▶Calculation History and Replay
- ▶Using Memory Functions

## Function Calculations

- ▶Pi (π), Natural Logarithm Base e
- ▶Trigonometric Functions, Inverse Trigonometric Functions
- ▶Hyperbolic Functions, Inverse Hyperbolic Functions
- ▶Angle Unit Conversion
- ▶Exponential Functions, Logarithmic Functions
- ▶Power Functions and Power Root Functions
- ▶Rectangular-Polar Coordinate Conversion
- ▶Factorial (!)
- ▶Random Number (Ran#)
- ▶Random Integer (RanInt#) (fx-220 PLUS only)
- ▶Permutation (nPr) and Combination (nCr)
- ▶Rounding function (Rnd)

## Using Calculation Modes

## Technical Information

**Getting Started**

**Removing the Hard Case**

Before using the calculator, slide its hard case downwards to remove it, and then affix the hard case to the back of the calculator as shown in the illustration below.

**Turning Power On and Off**

Press to turn on the calculator.

Press (OFF) to turn off the calculator.

**Note**

The calculator also will turn off automatically after approximately 10 minutes of non-use. Press the key to turn the calculator back on.

**Adjusting Display Contrast**

1. Press .

This displays the display setup screen.

2. Press .

3. Use and to adjust display contrast.

4. After the setting is the way you want, press .

**Important!**

If adjusting display contrast does not improve display readability, it probably means that battery power is low. Replace the battery.

**Key Markings**

fx-82MS/fx-85MS/fx-300MS/fx-350MS: Pressing the or key followed by a second key performs the alternate function of the second key.

fx-220 PLUS: Pressing the key followed by a second key performs the alternate function of the second key.

The alternate function is indicated by the text printed above the key.

fx-82MS/fx-85MS/fx-300MS/fx-350MS:

(1) Keycap function (2) Alternate functionfx-220 PLUS:

The following shows what the different colors of the alternate function key text mean.

If key marking text is this color: |
It means this: |
---|---|

Yellow | Press and then the key to access the applicable function. |

Red | Press and then the key to input the applicable variable, constant, function, or symbol. (fx-82MS/fx-85MS/fx-300MS/fx-350MS only) |

Blue (or enclosed in blue brackets) | Enter the SD Mode and REG Mode to access the function. (fx-82MS/fx-85MS/fx-300MS/fx-350MS only) |

The following shows an example of how an alternate function operation is represented in this manual.

Example: (sin-1)* 1 * Indicates the function that is accessed by the key operation () before it. Note that this is not part of the actual key operation you perform.

The following shows an example of how a key operation to select an on-screen menu item is represented in this manual.

Example: (COMP)* * Indicates the menu item that is selected by the number key operation () before it. Note that this is not part of the actual key operation you perform.

The cursor key is marked with four arrows, indicating direction, as shown in the illustration nearby. In this manual, cursor key operation is indicated as , , , and .

**Reading the Display**

The two-line display makes it possible to view both the calculation formula and its result at the same time.

(1) Calculation formula

(2) Calculation result

(3) Indicators

The table below describes some of the typical indicators that appear at the top of the screen (3).

This indicator: |
Means this: |
---|---|

The keypad has been shifted by pressing the key. The keypad will unshift and this indicator will disappear when you press a key. | |

The alpha input mode has been entered by pressing the key. The alpha input mode will be exited and this indicator will disappear when you press a key. (fx-82MS/fx-85MS/fx-300MS/fx-350MS only) | |

// | Indicates the current setting of Angle Unit (: Degree, : Radian, or : Gradian) on the setup menu. |

FIX |
A fixed number of decimal places is in effect. |

SCI |
A fixed number of significant digits is in effect. |

M |
There is a value stored in independent memory. |

STO |
The calculator is standing by for input of a variable name to assign a value to the variable. This indicator appears after you press (STO). (fx-82MS/fx-85MS/fx-300MS/fx-350MS only) |

RCL |
The calculator is standing by for input of a variable name to recall the variable's value. This indicator appears after you press . (fx-82MS/fx-85MS/fx-300MS/fx-350MS only) |