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Aurora Operating Manual

For use with AX- 501

Single line scientific calculator.

Printed in China

9220230

Introduction:

AURORA AX-501 calculator

The AURORA AX501 is a calculator with simplicity of

use and many capabilities that will appeal to both

professionperform als and student alike. It allows you to

all elementary calculations, has a memory, and the most

commonly used trigonometric and logarithmic functions,

as well as calculations in binary, octal or hexadecimal

number bases.

Removing and Replacing the CCover alculator’s

Always slide the keyboard end of the unit into the

cover first. Never slide the display end of the unit into the

cover.

Holding the cover as shown in the illustration, slide

the unit out of the cover before use. Picture………1

Holding the cover as shown in the illustration, slide

the unit out of the cover after use. Picture………2

Precautions

Don’t expose the machine to water, direct sunlight,

extremely hot or cold temperatures, or dusty

environments.

or subject it to heavy impact. Don’t drop the machine

Use a soft cloth to clean the machine. Do not use

detergents.

 Never dispose of batteries in a fire.

 Keep batteries out of the reach of children.

Press the RESET switch (on the front), with the tip of

a ball-point pen or similar object, only in the following

cases. Do not use an object with a breakable or sharp

tip. Note that pressing the RESET switch erases all data

stored in memory.

When using for the first time.

. After replacing the batteries

To clear all memory contents.

When an abnormal condition occurs and all keys are

inoperative.

Display

Floating point system

Scientific notation system

Mantissa Exponent

(During actual use not all symbols are displayed at

the same time.)

If the value of mantissa does not fit within the range

±0.000000001- ±9999999999, the display changes to

scientific notation. The display mode can be changed

according to the purpose of the calculation.

2ndF : Appears when 2ndF is pressed, indicating

that the functions that print are ed in the same colour as

2ndF are enabled.

HYP : Indicates that hyp has been pressed and

the hyperbolic functions are enabled. 2ndF hyp Ifarcare

pressed, the symbols “2ndF HYP” appear, indicating that

inverse hyperbolic functions are enabled.

DEG/RAD/GRAD: Indicates angular units and

changes each time is pressed. The default setting DRG

is DEG.

( ) : Appears when a calculation with parentheses

is performed by pressing ( .

BIN : Indicates that 2ndF has been pressed. →BIN

Binary system

mode is selected.

OCT : Indicates that 2ndF has been →OCT

pressed. Octal system mode is selected.

HEX : Indicates that 2ndF has been →HEX

pressed. Hexadecimal system mode is selected.

CPLX : Indicates that 2ndF CPLX has been

pressed. Complex number mode is selected.

STAT : Indicates that 2ndF has been STAT

pressed. Statistics mode is selected.

M : Indicates that a numerical value is stored in

the independent memory.

E : Appears when an error is detected.

Before Using the Calculator

Key Notation Used in This Manual

In this manual, key operations are described as

follows:

TO specify A (HEX) : A

TO sp2ndF ecify π : π

TO specify Exp : Exp

Functions that are printed in the same colour as

2ndF above the key require 2ndF to be pressed first

before the key. Numbers keys do not have second

function regardless of pressing 2ndF first, but as ordinary

numbers.

B - Operating Instructions

1. Power On and O ff

Press ON/COFF to turn the calculator on, and to turn it

off.

2. Clearing Numbers

 to clear the entries except for a Press ON/C

numerical value in the independent memory and

statistical data.

 to clear the number entered prior to use Press CE

of function key.

case of one digit correction of the entered number, In

press (right shift key). →

Example:

Key to Press

Display

ON/C

0.

5

5.

×

5.

ON/C

0.

6

6.

×

6.

8

8.

CE

0.

2

2.

=

12.

1 3 4

134.

→

13.

3

133.

3. Priority Levels in Calculation

Operations are executed according to the following

hierarchy:

1.Function calculations such as sin and %

2.Calculations in parenthesis

3. Powers and roots

4.×, ÷

5. +,-

Example: 8+2×2=

Key to Press

Display

ON/C

0.

8

8.

+

8.

2

2.

×

2.

2

2.

=

12.

※ In the example above, notice that the

multiplication is performed first. Performing 2×2+8 should

give the same result as the preceding one.

4. Parenthesis

a) Using Parenthesis

The parenthesis allow changes to be made to the

priorities of the operators. For example, to calculate 3×(8-

5).

If you leave out the parenthesis, the multiplication

between 3 and 8 is performed first, then the subtraction

of the result with 5 is made.

The presence of the parenthesis allows the

subtraction of 8 and 5 to be made first and the

multiplication of this result with 3.

Key to Press

Display

ON/C

0.

3

3.

×

3.

(

0.

8

8.

-

8.

5

5.

)

3.

=

9.

In the above example, the calculator “waits for” the

execution of subtraction in order to perform the

Symbol

Product specificaties