CITIZEN SRP-280 - Manual (Page 8)

E - 6
* [ SAVE ] lets you store values to variables.
* [ 2nd ] [ RECALL ] recalls the value of variable.
* [ 2nd ] [ CL-VAR ] clears all variables except PROG.
* [ 2nd ] [ CL-PROG ] clears the contents of PROG.
Order of operations
Each calculation is performed in the following order of precedence :
1) Expression inside parentheses.
2) Coordinates transformation, and Type B functions which are
required pressing the function key before entering, for example,
sin, cos, tan, sin
–1 , cos –1 , tan –1 , sinh, cosh, tanh, sinh –1 ,
cosh –1 , tanh –1 , log, ln, 10 X , e X , , NEG, NOT, X ’( ), Y ’( ).
3) Type A functions which are required entering values before
pressing the function key, for example, X 2 , ° , !, X –1 , %,
r, g.
4) Exponentiation ( ^ ), X
5) Fractions
6) Abbreviated multiplication format in front of variables, , RAND.
7) ( – )
8) Abbreviated multiplication format in front of Type B functions
2 3, Alog2, etc.
9) nPr, nCr
10) x , ÷
11) +, –
12) AND, NAND
13) OR, XOR, XNOR
14) Conversion (A
b /
c
 d /
e
, FD, DMS)
• When functions with the same priority are used in series,
execution is performed from right to left.
e X ln120 e X { 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 accuracy : ± 10th digit
Internal digits : SRP-280 24 digits
SRP-285 14 digits
In general, every reasonable calculation is displayed up to 10 digits mantissa,
or 10-digits mantissa plus 2-digits exponent up to 10
± 99 .
Numbers used as input must be within the range of the given function as follow
: