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
QS-2130(U1E) 09.4.14, 5:52 PM6
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