Memory Calculation - Citizen SR-270X College Instruction Manual

You can continue moving the cursor by [
previous input steps and editing values or commands for
subsequent execution. See Example 4.
The operation records in Memory are cleared each time when you
turn off the calculator, press [ ON ] key, perform a "reset", change
display format or calculation mode.
When the memory is full, the oldest calculation records are deleted
automatically to make room for the new ones.

Memory calculation

Memory variable
The calculator has seven memory variables for repeated use -- A, B,
C, D, M, X, Y. You can store a real number in any of the seven
memory variables. See Example 5.
• [ 2nd ] [ STO ] + [ A ] ~ [ D ], [ M ], [ X ] ~ [ Y ] lets you store values
to variables.
• [ RCL ] + [ A ] ~ [ D ], [ M ], [ X ] ~ [ Y ] recalls the value of the
variable.
• [ 0 ] [ 2nd ] [ STO ] + [ A ] ~ [ D ], [ M ], [ X ] ~ [ Y ] clears the
content to a specified memory variable.
• [ ALPHA ] + " memory variable " lets you insert the applicable
variables in a calculation.
• [ 2nd ] [ CLR ] [ 2 ] [ = ] clears all variables.
Running memory
You should keep the following rules in mind when using running
memory. See Example 6.
• Press [ M+ ] to add a result to running memory and the " M "
indicator appears when a number is stored in the memory. Press
[ RCL ] [ M ] to recall the content of running memory.
• Recalling from running memory by pressing [ RCL ] [ M ] key does
not affect its contents .
• Running memory is not available when you are in statistics mode.
• The memory variable M and running memory utilize the same
memory area.
• In order to replace the content of the memory with the displayed
number, please press [ 2nd ] [ STO ] [ M ] key.
• To clear the content of running memory, you can press [ 0 ] [ 2nd ]
[ STO ] [ M ] in sequence.
(Note) : Besides pressing [ 2nd ] [ STO ] [ M ] key to store a value,
you can also assign values to memory variable M by
[ M+ ]. However, when [ 2nd ] [ STO ] [ M ] is used,
previous memory contents stored in variable M are
cleared and replaced with the newly assigned value.
When [ M+ ] is used, values is added to present sum in
memory.
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