Casio DE-12E User manual

DE-12E

JE-12E

User’s Guide

• Be sure to keep all user documentation handy for future reference.

• In this User’s Guide, some key notations are shown in simplified

form.

➞lor B

Safety Precautions

Thank you for purchasing this CASIO product.

Be sure to read the “Safety Precautions” before using this product

to ensure that you use it correctly. Be sure to keep all user

documentation handy for future reference.

Danger

Indicates something that creates the major risk of death or

serious personal injury.

kButton Type and Coin Type Battery

Precautions

Take care to ensure that a battery will not be

swallowed accidentally.

Particular care is required to keep batteries away from

children.

Should a battery be swallowed accidentally or if there is a

possibility that a battery has been swallowed, immediately contact

a physician.

Swallowing a battery can result in chemical burns, mucosal tissue

penetration, and other serious problems that create the risk of

death.

Warning

Indicates something that creates the risk of death or

serious personal injury.

kDisplay Screen

Do not press the LCD or subject it to strong impact.

Doing so can cause the LCD glass to crack, creating

the risk of personal injury.

Should the LCD become cracked, never touch any of

the liquid inside.

LCD liquid getting on the skin creates the risk of skin irritation.

Should LCD liquid get into your mouth, immediately rinse your

mouth out and contact your physician.

Should LCD liquid get in your eyes or on your skin, rinse with clean

water and then contact your physician.

kBattery Precautions

Should fluid leaking from a battery get on your skin or

clothing, immediately rinse it off with clean water.

Battery fluid getting into the eyes creates the risk of eyesight loss,

etc. Rinse the eyes and then immediately contact a physician.

Caution

Indicates something that creates the risk of minor personal

injury or physical damage.

Observe the precautions below. Failure to do so can cause a

battery to rupture, creating the risk of fire, personal injury, and

soiling of nearby objects by leaking fluid.

• Do not try to take a battery apart and never allow a

battery to become shorted.

• Do not charge a non-rechargeable battery.

• Do not expose a battery to heat or throw it into fire.

• Use only the specified type of battery.

• Load a battery with its poles (plus (+) and minus (–))

facing correctly.

• Replace the battery as soon as possible after it goes

dead.

Battery Precautions

Observe the precautions below. Failure to do so can

cause the battery to explode or leak flammable liquid

or gas.

• Use only the type of battery that is specified for this product.

• Do not burn a battery or dispose of it in an incinerator, or by

mechanical crushing or cutting.

• Do not subject a battery to excessively high or low temperatures

during use, storage, or transport.

• Do not subject a battery to excessively low barometric pressure

during use, storage, or transport.

Important Precautions

• If you suspect that the calculator is operating abnormally due to

static electrical charge or some other problem, press Ato restore

normal operation.

• Avoid dropping the calculator and otherwise subjecting it to severe

impact.

• Never try to take the calculator apart.

• Never bend or twist the case.

• Wipe the unit with a soft, dry cloth to clean it.

• Replacing the battery or blocking the calculator from sunlight while

battery power is low may cause your tax rate setting, currency

conversion rate setting, or memory contents to be changed or lost.

Replace the battery as soon as possible when it becomes weak

and correct the rate setting, if necessary.

• The contents of these instructions are subject to change without

notice.

• CASIO COMPUTER CO., LTD. assumes no responsibility for any

loss or claims by third parties which may arise from the use of this

product.

Contents

Safety Precautions ······························································· 3

Important Precautions ·························································· 6

Power Supply ······································································· 8

Basic Calculations ································································ 9

Tax Calculations ································································· 12

Currency Conversion·························································· 13

Specifications ····································································· 15

Battery Replacement ························································· 15

Power Supply

Two-Way Power System provides power even in complete darkness.

• Even if you do not use the calculator, you should replace the battery

at least once every seven years.

• The replace battery icon ( ) will appear in the lower right corner

of the display when battery power is low.

• If the display becomes dim and difficult to read, or if nothing

appears on the display when you press A(especially when

lighting is dim), you probably need to have the battery replaced.

• The battery that comes with this unit discharges slightly during

shipment and storage. Because of this, it may require replacement

sooner than the normal expected battery life.

kAuto Power Off Function

Auto power off: Approximately 6 minutes after last key operation

• If the Auto Power Off function turns off power, press Ato restore

power.

Basic Calculations

4 3 2 1 0

ADD

CUT

F5/4

4 3 2 1 0

ADD

CUT

F5/4

(DE-12E)

(JE-12E)

“F” A0.

6 ÷3 ×5 + 2.4 – 1 = 11.4 6/3*5+2.4-1=11.4

2 ×(– 3) = – 6 2*3>=– 6.

5 ÷3 = 1.66666666… “F” 5/3=1.66666666...

“CUT, 2” 5/3=1.66

“UP, 2” (DE-12E) 5/3=1.67

“5/4, 2” 5/3=1.67

$1.23 “CUT, ADD2” 123+1.23

3.21 321-4.44

–1.11 111+3.33

2.00 2.= 5.33

$5.33

12 + 23 = 35 “F” 23++12=

35.

45 + 23 = 68 45=

68.

7 – 5 = 2 5--7=

2 – 5 = – 3 2=

– 3.

2 × 12 = 24 12**2=

24.

4 × 12 = 48 4=

48.

45 ÷ 9 = 5 9//45=

72 ÷ 9 = 8 72=

'4 × 5 = 10 “F” 49*5=10.

200 ×5% = 10 “F” 200*5&10.

100 + (100 ×5%) = 105 “F” 100*5&+ 105.

500 – (500 ×20%) = 400 “F” 500*20&- 400.

30 = 60 ×?% ? = 50 “F” 30/60&50.

12 = 10 + (10 ×?%) ?= 20 “F” 12-10&20.

100% 25%

$120

? ($160)

? ($40) “F” 120+25&

160.

40.

8 ×9 = 72 “F” (m)*1o8*9l

72.

–) 5 ×6 = 30 5*6m

30.

2 ×3 = 6 2*3l

48 n

48.

5 ×6 = 30 “F” A5*6=

30.

2 ×8 = 16 2*8=

16.

46 &*2

46.

12 ÷ 2 = 6

“F” (m)*1

Ao12l/2=

GT M

12 ÷ 5 = 2.4 n/5=

GT M

2.4

12 ÷ 8 = 1.5 n/8=

GT M

1.5

9.9 &

GT M

9.9

7.8 ×89 = 694.2

“F” (m)*1

Ao7.8l*89=

GT M

694.2

4.56 × 23 = 104.88 4.56l*23=

GT M

104.88

12.36 799.08 n

GT M

12.36

GT M

799.08

*1If the “EXCH” indicator is displayed, press mand confirm that

“EXCH” is not displayed.

*2&recalls the value stored (accumulated) in grand total memory.

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