Sharp QS-2130 User Manual

®

MODEL

ELECTRONIC CALCULATOR

OPERATION MANUAL

QS-2130

OPERATIONAL NOTES

Thank you for your purchase of the SHARP electronic calculator, model QS-2130.
To insure trouble-free operation of your SHARP calculator, we recommend the following:

1. The calculator should be kept in areas free from extreme temperature changes, moisture, and
dust.

2. A soft, dry cloth should be used to clean the calculator. Do not use solvents or a wet cloth.

3. The solar cell is delicate. It should not be pressed or tampered with.

4. If service should be required on this equipment, use only a SHARP servicing dealer, a SHARP
approved service facility or SHARP repair service where available.

This calculator has a folding support so it can be positioned easily

on the desk for a good operating angle.
(See diagram)

Please press the key whenever you see no indication, or meaningless display figures or
signs in the display or the keys do not function despite sufficient light.

CONTENTS

Page Page

THE KEYBOARD .............................................. 2 CALCULATION EXAMPLES ........................... 11

OPERATING CONTROLS................................. 3 ERRORS ......................................................... 17

POWER SUPPLY .............................................. 8 SPECIFICATIONS .......................................... 18

1

Solar cell

THE KEYBOARD

22

431 2

7
9

11

12

13

8

10

2

14

15

16

17
18
19

20

5

6

21

OPERATING CONTROLS

CONSTANT MODE SELECTOR:

1

ROUNDING SELECTOR:

2

DECIMAL/ADD MODE SELECTOR:

3

“K” position: The following constant functions will be performed.
Multiplication: The calculator will automatically remember the first number entered

(the multiplicand) and the instruction.

Division: The calculator will automatically remember the second number entered

(the divisor) and the instruction.

“•” position: Neutral

“ ” position: In multiplication and division, an answer is rounded up.
“5/4” position: In multiplication and division, an answer is rounded off.
“ ” position: An answer is rounded down.

Note: In addition and subtraction or floating decimal mode, an answer is rounded

down.

1. Decimal position (F, 3, 2, 0)
Presets the number of decimal places in the answer.
In the “F” position, the answer is displayed in the floating decimal system.

2. Add mode position (A):
The decimal point in addition and subtraction entries is automatically positioned to
the 2nd digit from the lowest digit of an entry number. Use of the add mode permits
addition and subtraction of numbers without an entry of the decimal point. Use of the

, and keys will automatically override the Add Mode and decimally correct

answers will be displayed.

3

Example: Set decimal/add mode selector at A, 5/4

A . Enter 12 3 Read 12.30
B. Enter 123 Read 123.

C. Enter 2 Read 2.

ACCUMULATION SELECTOR:

4

“∑” position: This selector will accumulate the following:

1. Numbers entered or answers obtained with the and keys will
be accumulated in the 1st memory register.

2. Numbers entered or answers obtained with the key will be
subtracted from the 1st memory register.

“•” position: Neutral

2ND MEMORY KEYS:

5

MEMORY PLUS : Adds an entry or an answer to the 2nd memory. This key

RECALL-CLEAR MEMORY : Pressed once, recalls the contents of the 2nd

CLEAR ALL KEY:

6

Before starting calculation, press this key. This causes the numerical values and
calculation commands including memory contents to be cleared.

4

1 00 12’300.00

3 0.67

also serves as the key when accumulating product
and/or quotients in the 2nd memory.

memory to the display. Pressed twice, recalls
and clears the contents of the 2nd memory.

ITEM COUNT KEY:

7

The counter will count the number of times that the key has been depressed in the
addition.
Note: Each time the key is used in the subtraction, 1 will be subtracted from the

count.
When the key is pressed once, the number stored is displayed and may be used for
further calculation. To clear the counter, press the key twice. The counter has the
capacity of a maximum of 3 digits (up to 999). If the count exceeds 999, the counter
recounts from 0 (Zero).

RIGHT SHIFT KEY:

8

Operation of this key in entering numbers or calculated result shifts the number one
digit to the right together with a decimal point. Used for one digit correction.

SQUARE ROOT KEY:

9

Depressed after a number or calculation, calculates the square root of that entry and/or
displayed numbers.
An answer is displayed in the floating decimal system.

Example: 5 → 2.23606797749

CLEAR ENTRY KEY:

10

Clears a number which has been entered into the machine prior to use of a function
key.
Example: Set decimal at 0

12 43 34 → 46.

Mis-entry

(12 + 34 =)

↑

5

CHANGE SIGN KEY:

11

POWER ON/CLEAR KEY:

12

0 00 to

13

DECIMAL POINT KEY:

14

MINUS EQUALS KEY:

15

PLUS EQUALS KEY:

16

MULTIPLE USE KEY:

17

PERCENT KEY:

18

6

Changes the sign of a number from a positive to a negative or a negative to a positive.
Example: 5 → 5.–

Clears the contents of the calculator, excluding the memory register.

•

Inputs the decimal place when depressed before or after a numeric entry.
Example: 7 → 0.7

Subtracts the number from the contents of the calculation register. This key is also used
to obtain the product/quotient in negative multiplication and division.

Adds the number to the contents of the calculation register. This key is also used to
obtain the results in multiplication and division.

Used to perform mark-up, percent change and automatic add-on/discount.

Permits entry of actual percentages rather than their decimal equivalents for percent
calculations.
Example: Set decimal at 2

Positive Negative

Press the key whenever there are no display indicators, meaningless display
figures or signs appear or the keys do not function despite sufficient light.

NUMERAL KEYS:

9

Used to enter numbers.

150 25 → 37.50

DIVISION KEY:

19

Orders division.

MULTIPLICATION KEY:

20

Orders multiplication.

1ST MEMORY KEYS:

21

These keys have access to the 1st memory register to store, calculate and recall
numbers for further use.

MEMORY PLUS : When depressed after a numeric key or a calculation this key adds

the numbers or the result to the 1st memory register.

MEMORY MINUS : When depressed after a numeric key or a calculation this key

subtracts the numbers or the result from the 1st memory register.

RECALLMEMORY : Displays the contents stored (the answer) in the 1st memory

register on the display. It does not clear the contents, but recalls the
answer to the display.

CLEAR MEMORY : Clears the entire contents of the 1st memory register only.

DISPLAY

22

: 1st memory symbol

Appears when a number is in the 1st memory.

: Minus symbol

Appears when a number is a negative.

: Error symbol

Appears when an overflow or an error is detected.

: 2nd memory symbol

Appears when a number is in the 2nd memory.

7

POWER SUPPLY

This calculator has a solar cell and is energized by electrical energy produced by the solar cell. The
solar cell converts luminous energy directly into electrical energy by utilizing the photovoltaic effect.

Brightness for operation

If the light exposed to the solar cell is insufficient, the calculator is not powered to operate.
With the brightness criterion below, operate the calculator at 150 Iux or more.

Outdoors or by the window: Incandescent lamp: Fluorescent lamp:

Use the calculator where it is
not exposed to direct sunlight
but receives enough illumi­nation for comfortable read­ing.

Backup Battery

If the light exposed to the solar cell is insufficient (150 Iux or lower), the backup battery is turned on
automatically to operate the calculator.
8

Use the calculator wherever it
receives the same illumi­nation as attained within 2.5
meters of a 100 Watts in­candescent lamp.

Use the calculator wherever
it receives the same illumi­nation as attained within 1.5
meters of a 15 Watts fluores­cent lamp.

Replacing the Backup Battery

The backup battery can support the solar cell for approximately seven years at room temperature
(20°C/68°F).
If a weak battery is left in the calculator, the memory contents may be lost.

When to replace:

At least once every seven years, even if the calculator is functioning properly.

•

The memory contents become null.

•

The display dims in dark places.

•

The display will not appear in insufficient lighting by pressing the key after the power is

•

automatically turned off.

How to replace:

1. Turn the calculator face down with the folding support at the bottom. Lift the support up.

2. Pressing lightly on the battery cover, slide the cover off in the direction of the arrow. See Fig. 1.

3. Place a pointed object in the space shown in Fig. 2 and, using the object as a lever, Iift the battery
out.

4. Install the new battery with the ⊕ side up as shown in Fig. 3.

5. Place the battery cover down as shown in Fig. 4.

6. Slide the cover in the direction shown in Fig. 5 until it clicks into place.

9

(Fig. 1) (Fig. 2) (Fig. 3)

(Fig. 4) (Fig. 5)

“MEMORY SAFE GUARD” function — The contents of the memory are retained even when the

calculator is turned off. A value stored in memory will thus remain until it is changed or until the
backup battery runs out.

Automatic Power-Off function (A.P.O.):

This calculator is automatically turned off approximately 7 minutes after the last key operation to
save the battery.

10

CALCULATION EXAMPLES

NOTE: ■ Depress the key prior to beginning any calculation.

If nothing appears on the display during calculation do not continue making entries.

CALCULATION EXAMPLE OPERATION DISPLAY

Addition & subtraction 125 + 350 + 25 =

Addition and
subtraction with
add mode

Repeat addition and
subtraction

Multiplication and
division

+ 4.50 − 3.00 =

2.50
Note: The

+ 12 + 12 +

12
45 − 10 − 10 = 45 10 61.

12

× 45 × 78 =

840

÷ 4 ÷ 15 =

key was not used in the entries.

•

•

K0

•

•

0

A

0

F

125 350

•

250 500.
250 450

•

3 00 4.00

12

•

12 45

•

78 42’120.
840 4

•

150 14.

11

CALCULATION EXAMPLE OPERATION DISPLAY

2

× 2 = 2

Square and
power calculations

Reciprocal calculation

Square root
calculation

Constant calculations

Percent calculations

2
2

1
7

√

295
295

18
12

650
123

=

× 2 × 2 = 2

3

= K0•2 8.

=

—

7 =

× 8 =
× 6 = 6 1’770.

÷ 2 =
÷ 2 = 12 6 6.

× 15% =

÷ 1368 = (%)

•

•

•

K0

K0

•

5/4, 2

•

0

F

F

2

2 4.

•

7 0.14285714285

•

7 2.64575131106

•

295 8 2’360.

•

18 2 9.

•

650 15 97.50

•

123 1368 8.99

•

12

CALCULATION EXAMPLE OPERATION DISPLAY

Before beginning, depress the key to clear the contents of the memory register.

•

Memory calculations

Add-on/discount
calculation

135 ×$4.00 = ?(1) 135 4 540.00
150

× 7.75 = ?(2)

450

× 3.45 = ?(3) 450 3.45 1’552.50

•

2 ∑ 150 7.75 1’162.50

= ?(4) 3’255.00

30 + 4 = ?(1) 30 4 34.00
15

− 3 = ?(2)

02

×10 = ?(3) 2 10 20.00

•

2

15 3 12.00

•

= ?(4) 66.00

650

650

+ (650 ×

− (650 ×

25%) =

25%) =

•

•

2

2

650 25 162.50

•

650 25 162.50

•

M (1)
M (2)
M (3)
M (4)

M (1)
M (2)
M (3)
M (4)

812.50

487.50

13

PERCENT MARK-UP BASED ON COST ( )

Calculate the selling price and the gross profit from the cost of $8,160 on the basis of a 15% profit on
the selling price.

Calculation method:
Selling price = =

PERCENT MARK-UP BASED ON SELLING PRICE ( )

Calculate the cost and the gross profit from the selling price of $9,780 on the basis of 20% profit of
the cost.

Calculation method:
Cost = =

1 +

14

8160

1 –

ENTER DEPRESS DISPLAY

8160 8’160.

15 9’600.00

9780

20

100

ENTER DEPRESS DISPLAY

9780 9’780.

20 8’150.00

15

100

➀

➀

Grossprofit = – 8160 =

Grossprofit = 9780 – =

8160

1 –

1’440.00

9780

1 +

1’630.00

15

100

20

100

➁

➀
➁

➁

➀
➁

AVERAGING

Calculate the average of a series of values.
EXAMPLE: Day Sales

Monday............................................................ $123.15

Tuesday........................................................... 118.00

Wednesday ..................................................... 131.58

Thursday ......................................................... 125.02

Friday .............................................................. 158.25

Average Sales = $131.20 ........

Note: If you are working in dollars and cents, use the “Add Mode.” If not, set the decimal as desired.

OPERATION DISPLAY NOTE

0.
12315 123.15
118

00

13158 372.73
12502 497.75
15825 656.00

5.

Total Sale $656.00 for 5 days

➂➀➁

241.15

➀
➁

131.20

➂

15

USING THE 2ND MEMORY

EXAMPLE:

(874 − 557) × (7 + 8)

(1746 + 876) ÷ (12 + 23)

=

Operation Display

0.

35.

75.

317.

4’755.

75.

63.

M
M

0.

M
M
M
M

0.

M I
M I
M I

0.

M I
M I
M I
M I
M I

12 23 23.

1746 876 2’622.

874 874.
557 * 557.

7 8 15.

* : To store a negative number, use the before the .

16

ERRORS

There are several situations which will cause an overflow or an error condition.
When this occurs, an error symbol “E” will be displayed.
The , or key must be pushed to restart the calculation.
The contents of the memory at the time of the error are retained.

1. Entry of more than 12 digits.
(The first 12 digits of an entry number and an error symbol “E” are displayed. In this case depress
the or key.)

2. When the integer portion of an answer exceeds 12 digits and does not exceed 24 digits

OVER FLOW CALCULATION

Ex. Set the decimal at “F”

908770000000 .0326 → 27.8763803680E

→ 27.8763803680

874 → 24’363.9564416

(24,363.9564416 × 1,000,000,000,000 = 24,363,956 441,600,000)

3. When the integer portion of the quotient in percentage calculation is 25 digits.
(Ex. 100000000000 0.00000000001 )

4. When any number is divided by zero (Ex. 5 0 ).

5. When the contents of the memory exceed 12 integers.
(Ex. 999999999999 1 )

6. When the square root of a negative number is calculated. (Ex. 5 )

17

SPECIFICATIONS

Type: Electronic calculator
Operating capacity: 12 digits
Decimal point: Read in: Floating up to 11 decimal places

Calculations: Four arithmetic calculations, Constant calculation, Add mode in addition and

Power supply : Built-in solar cell and lithium battery

Automatic Power-off: Approx. 7 min.
Operating temperature: 0°C ~ 40°C (32°F to 104°F)
Dimensions: 185(W) × 175(D) × 18(H) mm

Weight: Approx. 290 g ( 0.64 lb.) (with battery, without a soft case)
Accessories: Lithium battery (installed), Soft case, Operation manual

18

Result: Decimal-Set (F, 3, 2, 0) with add mode

subtraction, Square calculation, Chain calculation, Power calculation,
Percent calculation, Reciprocal calculation, Add-on calculation, Discount
calculation, Memory calculation, Square root calculation, Mark-up
calculation, etc.

(3V ... (DC) CR2032 × 1)

7-9/32″(W) x 6-7/8″(D) x 23/32″(H)

MEMO

19

MEMO

20

SHARP ELECTRONICS CORPORATION

Sharp Plaza, Mahwah, New Jersey 07430-2135

SHARP CORPORATION

00LT(TINSE0433THZZ)

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