Citizen SR-270N Manual De Usuario

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(Note) : The blinking cursor “   ” means the calculator is in insert 

mode  On the contrary, the blinking cursor is displayed as  
“_”  and it means the calculator is in overwrite mode. 

To clear all characters, clear all input character by [ 

ON

/

AC

 ] key. 

•  This function stores the latest operation executed. After execution 

is completed, pressing [ 2nd ] [] or [ 2nd ] [] key will display the 
operation from the beginning or the end. You can continue moving 
the cursor by [] or [] to edit it. To delete a digit, press [ DEL ]. ( 
or, in overwrite mode, just type over the digit).  See Example 1.

•  The replay function can keep input digits up to 256 characters for 

The calculator.  After execution is completed or during entering, 
you can press either [2nd ] [] or [2nd ] []  to display previous 
input steps and edit values or commands for subsequent execu-
tion.  See Example 2.

(Note) : The replay function isn’t cleared even when [ 

ON

/

AC

 ] is

 pressed or power is turned off, so contents can be re
 called even after [ 

ON

/

AC

 ] is pressed.

•  When a mathematically illegal calculation is performed, error posi-

tion display function will tell you with the cursor where the error 
is. Press [] or []  to move the cursor and then give it a correct 
entry. You can also clear an error by pressing [ 

ON

/

AC

 ] and then 

re-entered the values and expression from the beginning.  See 
Example 3.

•  Press [ M+ ] to add a result to running memory. Press [ 2nd ] [ M– 

] to subtract the value from running memory. To recall the value 
in running memory, press [ 2nd ] [ RCL ]  [  M  ]. To clear running 
memory, press [ 0 ] [ STO ] [  M  ].  See Example 4.

(Note) : Besides pressing [ STO ] key to store a value, you can 

also assign values to memory variable M by [ M+ ] or [ M– ].  

•  The calculator has nine memory variables for repeated use : A, B, 

C, D, E, F, M, X, Y. You can store a real number in any of the nine