Stack; Order Of Operations; Accuracy And Capacity - Citizen SR-270N Instruction Manual

memory variables. See Example 5.
* [ STO ] + A ~ F , M , or X ~ Y lets you store values to
variables.
* [ 2nd ] [ RCL ] or [ ALPHA ] + A ~ F , M , or X ~ Y
recalls the value of variable.
* [ 0 ] [ STO ] + A ~ F , M , or X ~ Y clears the content
to a specifi ed memory variable.
* [ 2nd ] [ Mcl ] [ = ] clears all variables.

Stack

This calculator uses memory areas, called " stacks ", to temporarily
store values (numeric stack) and commands (command stack ) ac-
cording to their precedence during calculations. The numeric stack
has 10 levels and command stack has 24 levels. A stack error (Stk
ERROR) occurs whenever you try to perform a calculation that is so
complex that the capacity of a stack is exceeded.

Order of operations

Each calculation is performed in the following order of precedence :
1) Coordinates transformation.
2) Type A functions which are required entering values before
pressing the function key, for example, x
3) ,
4) Fractions.
5) Abbreviated multiplication format in front of variables, π.
6) Type B functions which are required pressing the function
key before entering, for example, sin, cos, tan, sin
–1
tan , sinh, cosh, tanh, sinh
X
e , , , ( – ).
7) Abbreviated multiplication format in front of Type B functions
, Alog2, etc.
8) nPr, nCr
9) x , ÷
10) +, –
• When functions with the same priority are used in series,
execution is performed from right to left.
X X
e ln120 → e { ln (120 ) }
otherwise, execution is from left to right.
• Compound functions are executed from right to left.
• Anything contained within parentheses receives the highest
priority.

Accuracy and Capacity

Output digits : Up to 10 digits.
Calculating digits : Up to 15 digits
-E6-
2 –1
, , x !, x .
–1 –1
, cos ,
–1 –1 –1 X
, cosh , tanh , log, ln, 10 ,