EC707 - Calculator AURORA - Free user manual and instructions

Brand	Aurora
Model	EC707
Product Type	Calculator
Power Source	Solar only (battery free)
Display	12-digit LCD
Auto Power Off	5-12 minutes
Key Functions	ON/AC, OFF, C/CE, 0-9, 00, decimal, sign change (+/-), backspace (→), addition, subtraction, multiplication, division, equals
Memory Functions	M+, M-, MRC (recall/clear)
Business Functions	COST, SELL, MARGIN
Basic Arithmetic	Addition, subtraction, multiplication, division
Constant Calculation	Supported
Clean Instructions	Wipe with a dry, soft cloth. Do not use solvents or abrasives.
Storage	Store in a cool, dry place away from direct sunlight.
Dimensions (approx)	150 x 80 x 20 mm
Weight (approx)	100 g
Warranty	Refer to manufacturer for details.
Spare Parts Availability	Not applicable (solar powered, no replaceable parts)

Frequently Asked Questions - EC707 AURORA

How do I turn on the EC707 calculator?

Press the ON/AC key. This will turn on the calculator and clear all previous entries and memory.

Why does the display become dim?

The calculator is solar powered. If the light source is insufficient, the display will fade. Use it in good lighting conditions.

How long does the auto power off take?

The calculator will automatically turn off after 5 to 12 minutes of inactivity.

How do I clear the memory?

Press the MRC key once to recall the memory value, and press it again to clear the memory.

What are the COST, SELL, and MARGIN functions used for?

These keys allow you to calculate cost, selling price, or profit margin. For example, to find cost when selling price is 200 and margin is 6%, press 200 [SELL] 6 [MARGIN] to display cost 188.

How do I perform constant calculations?

For addition, subtraction, multiplication, or division, enter the first number and operation, then press equals. Subsequent entries will repeat the operation with the constant. Example: 2+3=5, then 4= gives 7.

Does the calculator have a backspace key?

Yes, press the → key to delete the last digit entered.

How do I change the sign of a number?

Press the +/- key to toggle between positive and negative values.

Can I use this calculator in low light?

No, it requires sufficient light to operate. If the display fades, move to a brighter area.

How should I clean the calculator?

Clean with a dry, soft cloth. Do not use any solvents, abrasive cleaners, or immerse in water.

USER MANUAL EC707 AURORA

Multi Function Calculator

12-Digit

EC505 / EC707

Solar Only Power

This calculator is battery free and uses solar power only. Please use the calculator in good lighting conditions. If the light source is not sufficient the display will fade.

Auto Power Off

If the calculator is not used for a period of 5-12 minutes, the unit will automatically switch off.

Turning On

Please press the "ON/AC" key first to turn the calculator on & clear all previous entries.

Key Function:

OFF.... Turns the calculator off

C/CE .... Clear entry

ON/AC ...... Turns the calculator on, and clear all entries and memory

+ Addition Key

- Subtraction Key

÷ Division Key

× …… Multiplication Key

= ...... Equal Key

0\~9/00 Number Key

• Decimal Key

+/- Symbol Key

→ Backspace Key

M+/M-/MRC .... Memory Operation Key

COST ...... Function Key "Cost"

SELL ...... Function Key "SELL"

MARGIN …… Function key "MARGIN"

Calculation Examples:

Basic calculation

Example	Operation	Display
23+203-56=	23+203-56=	170.
562×(38-96)=	38-96×562=	-32596.
(23×6+78)+2.3-89=	23×6+78+2.3-89=	4.9130434782
1234567×9876543=	1234567×9876543=	12.1932540618
	C/CE	12.1932540618
	C/CE or ON/AC	0.

Constant calculation

Example	Operation	Display
2+3=5	2+3=	5.
4+3=7	4=	7.
2-3=-1	2-3=	-1.
4-3=1	4=	1.
2×3=6	2×3=	6.
2×4=8	4=	8.
2+4=0.5	2+4=	0.5
3+4=0.75	3=	0.75

Memory calculation

Example	Operation	Display
2×3=6	2×3M+	MEMORY 6.
- ) 3×4=12	3×4M-	MEMORY 12.
+) 4×5=20	4×5M+	MEMORY 20.
14	MRC	MEMORY 14.
	MRC	14.

□ COST, SELL, MARGIN Function

To find the cost price if the sell price = 200 and the margin is 6%

Example	Operation	Display
Sell = 200 Margin = 6% Cost =?	200 [SELL] 6 [MARGIN]	COST 188.

To find the margin if the cost is 60 and the sell price is 100

Example	Operation	Display
Cost=60 Sell =100 Margin=?	60 [COST] 100 [SELL]	MARGIN% 40.

To find the sell price if cost price = 200 and the margin is 10%

Example	Operation	Display
Cost = 200 Margin = 10%Sell=?	200 [COST] 10[MARGIN]	SELL 222.222222222

Decimal Selector & Rounding Operation

Example	Decimal	Round	Operation	Display
			C/CE	0.
5 ÷ 3 = 1.66666666666	F	5/4	5 ÷ 3 =	1.66666666666
5 ÷ 3 = 1.66	2	↓	5 ÷ 3 =	1.66
5 ÷ 3 = 1.67	2	5/4	5 ÷ 3 =	1.67
5 ÷ 3 = 1.67	2	↑	5 ÷ 3 =	1.67
4 ÷ 3 = 1.33333333333	F	5/4	4 ÷ 3 =	1.33333333333
4 ÷ 3 = 1.3333	4	↓	4 ÷ 3 =	1.3333
4 ÷ 3 = 1.3333	4	5/4	4 ÷ 3 =	1.3333
4 ÷ 3 = 1.3334	4	↑	4 ÷ 3 =	1.3334
2 + 3 = 0.05	A	↓	2 + 3 =	0.05
5 - 3 = 0.02	A	↓	5 - 3 =	0.02
5 ÷ 3 = 1.66	A	↓	5 ÷ 3 =	1.66
5 ÷ 3 = 1.67	A	5/4	5 ÷ 3 =	1.67
4 ÷ 3 = 1.34	A	↑	4 ÷ 3 =	1.34
2 × 3 = 6.00	A	↑	2 × 3 =	6.00

Producer

Aurora Electronics (UK) LTD. Unit 1.4.2 China Industrial

Unit 1 & 2 Shires Industrial Estate Lichfield, Staffordshire, WS14 9AZ, U.K.

9219472