Sharp PC-1403 - Page 80

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• If , f or exam pl e , " A = numer i c v a l ue " or " B = form u la " is use d i n a l o gical
eq u at i on , t he c om p uter will n o t t r ea t it a s a l og ical eq uat ion bu t as a n a ssignment
s tate m e n t for var i able s. When using an equal ( =) sign for a l o g i cal e qua t ion , u s e
i t i n t h e form of " nume ri c va l ue = A " or · "f ormu l a = B " , with t h e e x cept io n of
c on ditio n al expre s sio n s u s ed in I F stateme n t s .
Direct Calculation Feature
I n the m anual ca lc u l a t ions des c r i b ed up to n o w , we a lw a y s us ed t he I E N T ER ) key to
ter mina te a f or mula a n d obta i n the c a l c ul ation res ul t o f the fo rmul a . H owe v er , you c an
d i rectly operate the f un c t i ons o f th e com put er w i t h t he des i re d fun c t i on key ( w i tho u t
operati n g t he I ENTERl key) when the obj e ctive numer i c data i s i n t he d is play .
*
1
i f x = y
> =
1
i fx~ y
=
0
ifx :foy 0
ifx<y
>
1 i fx >y
< =
1
i f x ~ y
0 i fx~y
0
if x>y
<
1 ifx <y
<>
1 ifx :fo y
"< > "
(mean s"::/="
)
0
ifx ~ y
0 i f x = y
Equations compo s ed of lo g i cal operat o r s (= , > , < , > = , < = , < > ) ca n t ake o n the
va l ues li s ted i n th e fol l ow i ng tab le:
x and y repre s ent numer i c v a l ues .
" The v a lu e s of y and x are s t o red i n v a r ia bles Z a nd Y , resp ec tivel y .
Note: F or co ord i nate s c on ve rs ion , the conve r s i on r e s u lt s ar e s tored in v ari a bles Z
and Y . Therefo r e , th e previ ou s cont e nts of Z a nd Y (or 2 $ a nd Y $) will be
c l ea r ed.
- Reference -
(y =; 7 . 1 )
7 . 053423028 ( Y )
z I E N TE R !
( x =: - 9.7)
- 9 . 708203933
( x )
Examp l e : Co n ve r si on fr o m po l a r i n t o rect angular coo r d i nates : De t ermine r ec tang u -
la r coordinates ( x , y) for poin t P ( 12 , 4 / 5ir) on po l ar co ord i nates.
Op erat i o n : R ADIA N I E N TE R ) Sp e ci fi e s " r ad i an s" f or an gu l a r unit.)
RE C ( 1 2 , ( 4 / 5* PI ))
Using as a Calcul ator