CITIZEN SRP-285N - Manual (Page 8)

E – 7
File name : CBM_SR285,A_HDBSR285T19_English.doc
version : 2010/04/26
z The calculator has ten memory variables for repeated use : A, B,
C, X, Y, M, X1, X2, PROG1 and PROG2. You can store a real
number in variables A, B, C, X, Y, M, X1, X2 and an expression in
PROG1 and PROG2. See Example 5.
* [ P/V RCL ] recalls all variables.
* [ SAVE ] lets you store values to variables.
* [ 2nd ] [ RECALL ] recalls the value of variable.
* [ 2nd ] [ CL-VAR ] clears all variables except PROG1, PROG2.
* [ 2nd ] [ CL-PROG ] clears the contents of PROG1, PROG2.
(Note) : Besides pressing [ SAVE ] key to store a value, you can
also assign values to memory variable M by [ M+ ] or
[ 2nd ] [ M– ]. However, anything currently stored in
variable M will be deleted and replaced by the newly
assigned value.
„ 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, π ,
RANDM, RANDMI.
7) ( – )
8) Abbreviated multiplication format in the 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
, F D, DMS )
• When functions with the same priority are used in series,
execution is performed from right to left.
e X ln120 Æ e X { ln (120 ) }
otherwise, execution is from left to right.