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1

Using the Casio fx-83 Calculator

The Casio fx-83 calculator is currently widely available and is highly

recommended for use by engineering students at Levels 2 and 3.

The calculator has over 250 functions and it incorporates a ‘natural

display’ that supports input and output using mathematical notation,

such as fractions, roots, etc.

INITIALISING THE CALCULATOR

The keystrokes shown in Figure 1 can be used to return the calculator’s settings and modes

to their initial (default) values. Note that this operation will also clear any data from the

calculator’s memory. The fx-83’s Clear menu is shown in Figure 2.

SETTING THE CALCULATOR MODE

The fx-83 provides three different calculation modes; COMP is used for general calculations,

STAT is used for statistical calculations, and TABLE is used to generate a table of values

based on a given expression. For Level 2, you will only need to use the COMP mode. The

Mode menu is shown in Figure 3 and the keystrokes required to set the calculator to the

COMP mode are shown in Figure 4.

FIGURE 1 Key entry required to initialize the calculator

FIGURE 2 The fx-83’s Clear menu will allow you to reset and initialize the calculator

FIGURE 3 The fx-83’s Mode menu will allow you to change the calculator’s mode

2

FIGURE 4 Key entry for setting the calculator to COMP mode

Note: When you first power up the fx-83 calculator it will be in ‘MathIO’ mode. This may be

awkward for use with many basic engineering calculations. To change the mode to the more

conventional ‘LineIO’ mode, you need to press the SHIFT button followed by MODE and 2.

TABLE 1 The display symbols used on the fx-83

Display

Meaning

S

The keypad has been shifted by pressing the SHIFT key. The keypad will unshift

and this indicator will disappear when you press a key

A

The alpha input mode has been entered by pressing the ALPHA key. The alpha

input mode will be cancelled, and this indicator will disappear when you press a

key

M

This indicates that a value has been stored in the calculator’s memory

STO

The calculator is waiting for the input of a variable name. The calculator will then

assign a value to this variable. The indication appears after you press

SHIFT RCL STO

RCL

The calculator is waiting for the input of a variable name. The calculator will then

recall the value of this variable. The indication appears after you press RCL

STAT

The calculator is in the statistical mode

D

The default unit for angles is degrees

R

The default unit for angles is radians

G

The default unit for angles is grads

FIX

The calculator has been set to display a fixed number of decimal places

SCI

The calculator has been set to display several significant digits

Math

The calculator has been set to the maths input/output mode



Calculation history is available and can be replayed (or there is more data above

or below the display)

Disp

The display currently shows an intermediate result of a multi-statement

calculation

3

CONFIGURING THE CALCULATOR SETUP

The fx-83 Setup menu allows you to control the way in which calculations are performed as

well as the way that expressions are entered and displayed. The menu will let you work with

a fixed number of decimal places (FIX), or with a fixed number of significant digits (SCI). You

can also choose to use mathematical notation (MthIO) or conventional (line-based) notation

(LineIO). The Setup menu is shown in Figure 5 whilst the keystrokes required to set the

calculator to LineIO mode are shown in Figure 6.

FIGURE 5 The Setup menu

FIGURE 6 The fx-83’s Mode menu will allow you to change the calculator’s mode. Here we

are changing to LineIO mode.

For further information please see www.key2study.com