Sharp COMPET QS-2130 User manual

QS-2130
ELECTRONIC CALCULATOR
OPERATION MANUAL
MODEL
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1
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
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2
THE KEYBOARD
Solar cell
4 3 1 2
7
9
11
12
8
10
6
5
13
14
15 17
16
18
22
21
19
20
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3
OPERATING CONTROLS
1
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.
Division: The calculator will automatically remember the second number entered
(the divisor) and the instruction.
“•” position: Neutral
2ROUNDING 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.
3DECIMAL/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.
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4
Example: Set decimal/add mode selector at A, 5/4
A. Enter 12 3 Read 12.30
B. Enter 123 Read 123.
1
00
12’300.00
C. Enter 2 Read 2.
3 0.67
4ACCUMULATION SELECTOR:
“∑”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
52ND MEMORY KEYS:
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.
6CLEAR ALL KEY:
Before starting calculation, press this key. This causes the numerical values and
calculation commands including memory contents to be cleared.
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5
7ITEM COUNT KEY:
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).
8RIGHT SHIFT KEY:
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.
9
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
10
CLEAR ENTRY KEY:
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.
↑(12 +34 =)
Mis-entry
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6
11
CHANGE SIGN KEY:
Changes the sign of a number from a positive to a negative or a negative to a positive.
Positive Negative
Example: 5 →5.–
12
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.
13
0
00
to
9
NUMERAL KEYS:
Used to enter numbers.
14
DECIMAL POINT KEY:
Inputs the decimal place when depressed before or after a numeric entry.
Example: 7 →0.7
15
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.
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.
17
MULTIPLE USE KEY:
Used to perform mark-up, percent change and automatic add-on/discount.
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
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7
19
DIVISION KEY:
Orders division.
20
MULTIPLICATION KEY:
Orders multiplication.
21
1ST MEMORY KEYS:
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.
22
DISPLAY
: 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.
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8
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:
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.
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 2.5
meters of a 100 Watts in-
candescent lamp.
Use the calculator wherever
it receives the same illumi-
nation as attained within 1.5
meters of a 15 Watts fluores-
cent lamp.
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