Casio SF-7990 User Manual
Page 73
71
E
•
AC
— clears the calculator completely (except the calculator memory).
• Use
C
to clear a value if you have not yet entered the operator following that
value.
• Use the number keys (
0
through
9
) to enter values. Press
• to input a decimal
point.
• Use
MC
,
MR
,
M
@
and
M+
for calculator memory operations.
MC — clears the calculator memory.
MR — recalls the current calculator memory contents.
M
@
— subtracts the currently displayed value from the current memory
contents. You can also press
M
@
to execute a calculation, with the
result being subtracted from the memory contents.
M+
— adds the currently displayed value to the current memory con-
tents. You can also press
M+
to execute a calculation, with the
result being added to the memory contents.
• Use !, @, # and $ to specify the arithmetic operation that is marked above
each key.
• Use !/@ to change the sign.
• = — executes a calculation and displays its result.
• Use % for percentage calculations.
Using the Calculator