Sharp QS 2130 QS-2130 Operation Manual - Page 7

Change Sign Key, Power On/clear Key, Numeral Keys, Decimal Point Key, Minus Equals Key, Plus Equals - discount

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Page 7 highlights

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 6

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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