Operation Manual

9
TOTAL MEMORY KEY
SUBTOTAL MEMORY KEY
MEMORY MINUS KEY
MEMORY PLUS KEY
TAX-INCLUDING KEY
AVERAGE KEY:
Used to calculate the average.
CHANGE SIGN KEY:
Changes the algebraic sign of a number (i.e., positive to negative or
negative to positive).
MULTIPLE USE KEY:
Used to perform mark-ups, percent change and automatic add-on/
discount.
DISPLAY
Display format:
Symbols:
I : Memory symbol
Appears when a number is in the memory.
– : Minus symbol
Appears when a number is negative.
••
••
•
: Grand total memory symbol
Appears when a number is in the grand total memory.
E : Error symbol
Appears when an over flow or other error is detected.
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