®
MODEL
QS-2130
ELECTRONIC CALCULATOR
OPERATION MANUAL
THE KEYBOARD
Solar cell
22
5
1
2
3
4
7
9
6
21
11
12
17
18
19
20
8
13
15
16
14
10
2
OPERATING CONTROLS
CONSTANT MODE SELECTOR:
“K” position: The following constant functions will be performed.
Multiplication: The calculator will automatically remember the first number entered
(the multiplicand) and the instruction.
The calculator will automatically remember the second number entered
1
Division:
(the divisor) and the
Neutral
instruction.
“ ” position:
•
ROUNDING SELECTOR:
“ ” 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.
2
3
DECIMAL/ADD MODE SELECTOR:
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
B. Enter
12
3
123
00
Read
Read
12.30
123.
1
12’300.00
2.
C. Enter
2
Read
3
0.67
ACCUMULATION SELECTOR:
“∑” position: This selector will accumulate the following:
4
1. Numbers entered or answers obtained with the
be accumulated in the 1st memory register.
and
keys will
2. Numbers entered or answers obtained with the
subtracted from the 1st memory register.
key will be
“ ” position: Neutral
•
2ND MEMORY KEYS:
5
6
MEMORY PLUS
: Adds an entry or an answer to the 2nd memory. This key
also serves as the key when accumulating product
and/or quotients in the 2nd memory.
RECALL-CLEAR MEMORY
: Pressed once, recalls the contents of the 2nd
memory to the display. Pressed twice, recalls
and clears the contents of the 2nd memory.
CLEAR ALL KEY:
Before starting calculation, press this key. This causes the numerical values and
calculation commands including memory contents to be cleared.
4
ITEM COUNT KEY:
7
The counter will count the number of times that the
addition.
key has been depressed in the
Note: Each time the
count.
key is used in the subtraction, 1 will be subtracted from the
When the
key is pressed once, the number stored is displayed and may be used for
key twice. The counter has the
further calculation. To clear the counter, press 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
9
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:
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
↑
Mis-entry
34
→ 46.
(12 + 34 =)
5
CHANGE SIGN KEY:
Changes the sign of a number from a positive to a negative or a negative to a positive.
11
12
Positive
5
Negative
5.–
Example:
→
POWER ON/CLEAR KEY:
Clears the contents of the calculator, excluding the memory register.
Press the
key whenever there are no display indicators, meaningless display
•
figures or signs appear or the keys do not function despite sufficient light.
to
NUMERAL KEYS:
Used to enter numbers.
0
00
9
13
14
DECIMAL POINT KEY:
Inputs the decimal place when depressed before or after a numeric entry.
Example:
7 → 0.7
MINUS EQUALS KEY:
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.
15
16
PLUS EQUALS KEY:
Adds the number to the contents of the calculation register. This key is also used to
obtain the results in multiplication and division.
MULTIPLE USE KEY:
Used to perform mark-up, percent change and automatic add-on/discount.
17
18
PERCENT KEY:
Permits entry of actual percentages rather than their decimal equivalents for percent
calculations.
Example: Set decimal at 2
150
25
→ 37.50
6
DIVISION KEY:
Orders division.
19
20
21
MULTIPLICATION KEY:
Orders multiplication.
1ST MEMORY KEYS:
These keys have access to the 1st memory register to store, calculate and recall
numbers for further use.
MEMORY PLUS
MEMORY MINUS
RECALLMEMORY
:
:
:
When depressed after a numeric key or a calculation this key adds
the numbers or the result to the 1st memory register.
When depressed after a numeric key or a calculation this key
subtracts the numbers or the result from the 1st memory register.
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 illumi-
nation for comfortable read-
ing.
Use the calculator wherever
it receives the same illumi-
nation as attained within 1.5
meters of a 15 Watts fluores-
cent lamp.
Use the calculator wherever it
receives the same illumi-
nation as attained within 2.5
meters of a 100 Watts in-
candescent lamp.
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
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
automatically turned off.
key after the power is
•
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
I
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
125
250
350
450
Addition & subtraction 125 + 350 + 25 =
0
•
•
•
•
500.
Addition and
subtraction with
250
3
2.50 + 4.50 − 3.00 =
A
00
4.00
Note: The
key was not used in the entries.
add mode
12 + 12 + 12 +
12
45
Repeat addition and
subtraction
K
0
0
F
•
•
•
45 − 10 − 10 =
10
61.
42’120.
14.
12
78
45
12 × 45 × 78 =
•
•
Multiplication and
division
840
150
4
840 ÷ 4 ÷ 15 =
11
CALCULATION
Square and
EXAMPLE
OPERATION
DISPLAY
2 × 2 = 22 =
2 × 2 × 2 = 23 =
0
0
2
2
4.
8.
•
K
•
•
power calculations
1
Reciprocal calculation
=
7
F
F
0
0
7
7
0.14285714285
2.64575131106
•
•
K
•
•
•
•
—
Square root
calculation
√7 =
295 × 8 =
295
8
6
2’360.
1’770.
295 × 6 =
Constant calculations
Percent calculations
18 ÷ 2 =
18
12
2
6
9.
6.
K
12 ÷ 2 =
650 × 15% =
2
2
650
123
15
97.50
8.99
•
•
•
•
123 ÷ 1368 = (%)
5/4,
1368
12
CALCULATION
EXAMPLE
OPERATION
DISPLAY
Before beginning, depress the
key to clear the contents of the memory register.
•
135 × $4.00 = ?(1)
135
150
450
4
7.75
3.45
540.00M (1)
1’162.50M (2)
1’552.50M (3)
3’255.00M (4)
150 × 7.75 = ?(2)
2
2
∑
•
•
450 × 3.45 == ??((34))
Memory calculations
30 + 4 = ?(1)
15 − 3 = ?(2)
02 ×10 = ?(3)
= ?(4)
30
4
34.00M (1)
12.00M (2)
20.00M (3)
66.00M (4)
15
3
•
2
10
650
650
25
25
162.50
812.50
650 + (650 × 25%) =
2
2
•
•
•
•
Add-on/discount
calculation
162.50
487.50
650 − (650 × 25%) =
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:
8160
15
100
8160
15
100
Selling price =
=
Grossprofit =
– 8160 =
I
I
1 –
1 –
ENTER
DEPRESS
DISPLAY
8160
15
8’160.
9’600.00
1’440.00
I
I
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:
9780
20
100
9780
20
100
Cost =
=
Grossprofit = 9780 –
=
I
I
1 +
1 +
ENTER
DEPRESS
DISPLAY
9780
20
9’780.
8’150.00
I
I
1’630.00
14
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
Total Sale $656.00 for 5 days
Average Sales = $131.20 ........
I
I
I
Note: If you are working in dollars and cents, use the “Add Mode.” If not, set the decimal as desired.
OPERATION
DISPLAY
NOTE
0.
123.15
241.15
372.73
497.75
656.00
5.
12315
118 00
13158
12502
15825
I
I
I
131.20
15
USING THE 2ND MEMORY
(874 − 557) × (7 + 8)
(1746 + 876) ÷ (12 + 23)
EXAMPLE:
=
Operation
Display
0.
M
12
23
23.
M
0.
M
1746
876
2’622.
M
35.
75.
M
M
0.
M I
M I
M I
M I
M I
M I
M I
M I
874
557
874.
557.
0.
*
7
8
15.
317.
4’755.
75.
63.
* : 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
→ 24’363.9564416
874
(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
4. When any number is divided by zero (Ex. 5
5. When the contents of the memory exceed 12 integers.
(Ex. 999999999999
6. When the square root of a negative number is calculated. (Ex. 5
0.00000000001
)
0
).
1
)
)
17
SPECIFICATIONS
Type:
Electronic calculator
Operating capacity:
Decimal point:
12 digits
Read in: Floating up to 11 decimal places
Result: Decimal-Set (F, 3, 2, 0) with add mode
Four arithmetic calculations, Constant calculation, Add mode in addition and
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.
Calculations:
Power supply :
Built-in solar cell and lithium battery
(3V ... (DC) CR2032 × 1)
Approx. 7 min.
Automatic Power-off:
Operating temperature: 0°C ~ 40°C (32°F to 104°F)
Dimensions:
185(W) × 175(D) × 18(H) mm
7-9/32″(W) x 6-7/8″(D) x 23/32″(H)
Approx. 290 g ( 0.64 lb.) (with battery, without a soft case)
Lithium battery (installed), Soft case, Operation manual
Weight:
Accessories:
18
MEMO
19
MEMO
20
SHARP ELECTRONICS CORPORATION
Sharp Plaza, Mahwah, New Jersey 07430-2135
SHARP CORPORATION
PRINTED IN CHINA
00LT(TINSE0433THZZ)
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