Casio SF-6990 User Manual

E

•

— clears the calculator completely (except the calculator memory).

• Use 

 to clear a value if you have not yet entered the operator following that

value.

• Use the number keys ( 

 through 

 ) to enter values. Press

• to input a decimal

point.

• Use 

, 

, 

@

 and 

 for calculator memory operations.

MC — clears the calculator memory.
MR — recalls the current calculator memory contents.

@

— subtracts the currently displayed value from the current memory

contents. You can also press 

@

  to execute a calculation, with the

result being subtracted from the memory contents.

— adds the currently displayed value to the current memory con-

tents. You can also press 

 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