Sharp EL-2901RH Operation Manual page 6

"A": The decimal point in addition and subtraction
entries is automatically positioned to the 2nd
digit from the lowest digit of entry number. Use
of the add mode permits addition and
subtraction of numbers without entry of the
decimal point. Use of
automatically override the add mode and
decimally correct answers will be printed.
PAPER FEED KEY
NON-ADD / SUBTOTAL KEY
CLEAR / CLEAR ENTRY KEY
TOTAL KEY
EQUAL KEY
CHANGE SIGN KEY:
Changes the algebraic sign of a number (i.e.,
positive to negative or negative to positive).
RECALL AND CLEAR MEMORY KEY
RECALL MEMORY KEY
TAX-INCLUDING KEY
PRE-TAX KEY
Press this key to enter the cost price.
, and will
Press this key to enter the selling price.
Press this key to enter the margin.
DISPLAY
Display format:
Symbols:
M : Appears when a number is in the memory.
– : Appears when a number is negative.
• : Appears when a number is in the grand total
E : Appears when an overflow or other error is
* Although all available symbols are shown here
4
GRAND TOTAL KEY
COST PRICE ENTRY KEY:
SELLING PRICE ENTRY KEY:
MARGIN ENTRY KEY:
memory.
detected.
for instruction purposes, these symbols will not
appear on the screen simultaneously.