Advertisement
~.
.~_~
•••_.,.·UM
,' , "' ' O /l.' ' i ' ' ' ' ' .......
SC'iOGi r=:CA:!G.\IS
TEOI1\ISCHE DATF.N
nu",.bers greeter than InlO requ;'e repeated subtraction,
wc,i"" moy reou
it
in "
:0,.,.
0:
Sign,ti~nt
di9itS.
W~s~'"'t1iche
Stell""- ""rloren
llell~n ktnne~_
Fur Winicd
sr6Eer
al~
360"
u.nd Antilogarithmen von Zahlen
gr6:lOer als lnlO
i~l ehen~o
ein",
wicdcrhQl(~
SubtraKLon
erforderlich, wocbrcl, we,entJicr,e Stellen verloren
gehen konnen.
Kew'w
Po\i~h Nota;:io~ i~
a
:X>Sl~ix
"o<"tioo methOd
whieh is applied to the cal"u:ator from computer
thl'Cry, together w;th the register stad< concept
described in the jater p<!l"t of this man!.:,,1.
A!'Jebf~ic
e><f.'res~on,
A;-
(f:; -
C) x 0, becomes as shown below
when expressed ,n Reve'se Polish NOlation.
A13C-O><+
HOl"JeVer. the above exp'e'.iSion in Reverse Poli:ffi Nota
lior: ""nrlM be
ent~rcd ;.~to
the a.leula:or ", the
exact
seo...
~nee
Of
the expression, s;ne" tnc cal<;ul1ltor coes not
distinguish data
A.;::. anrl C as tocoo diff"urn<
numeric
values. but. ide,"1tifies as one numeric
va',...e
e-Il'!n when
the
t~ree
c"lumer;c values are
con~"c"tiv"lv
koyC<;l in.
For ;his reason, the
~
.... .,y is employed to ;nput eaeh
numeric va"-:e. Using the
~
:tey. :h"abov« R"""r""
;vli~i'
e><J-'ression becomes as foHaws_
A ENTBENTC-D
J<+
()por~tO'SSlJch,,~
-, x
and.,.
perform calculation of
:he two numeric
val~es
entered
immoo;ately before
th~
oper;;t"r, Accord;ngly, ir
th",,,wve
Reverse
Po!is.~
expression, dellression of the
'~.
key
causes calculation
of
B - G
to
be performed.
and
the
result of ,uutraetion
to be metr,or,zed as ·:;",e numeric data "",Iu"! in lie\l of
Band
C.
Similarly, subsequem d"pc<'!Ssion of thc Kl
~.ey
causes
mlil~;p\jcalior. o~
the
result
ol B _ C by D
tCo
Bei
der
umgek.ehrtcn
pclni.~l';'~
SehTeij,we;s,o h.-lndclt
C~
sich urn due nachgestdltc Schreibwci.,.;:, dk fUr de;1
Reehncr
~usa:nm~:J.
mit dem
Rcgi~tc,.-St~pd-Kon","'pt,
<J:is
ir1
emem der folgendc:"I Aosc\wittc di;:.ser Bedie
r>ungsan1~itu"g
beschIicben wird, aus cer Computer
thooric
il;;.eUl<Jmmc~ w\;l"d~.
Der algebraiscOle Ausdruck Ai' {B -- Cl x D wird in cler
umZd'''h'Ic...-, polni",hcn Sehrcibw"'6t "'ic folgl
ausga...driickt:
ABC_f)>:;
Der obige Allsdruck in
umge.!<"nrte:r polnischcr
SdlI~jbweise
kann jedoC! nicht in
rler genauen
Reihellfoge
d~s
Ausdrud<;s in dell
Rechllcr
cingcgeben
werden,
cta
der Rcchner aie Datcn A, B uml C rticht
~j,
drei vel"schl<:d.:nc Z,hlenwerte
untersd:~idet
sondcrn
ais
eincn Zahlenwen erkennt, selbst w"nn die dre,
Z:Jhlenw",:lc
n.::Ch~j'l;",'<!cr dngeta~tct
\\cr<ka_ A",s
djesem Gmnd wird die
:5 Taste
verwendet, urn
j~den
Zllhknw",t
einz\,gebe-,,_
Bel V"'''''''''<!''"5 ,kr
~
Tl!5h
'wd die obige
ilmgckehrle poirlisehe Schreibwe:ise wie
;'olgtei:l.g~~ebe~.:
A ENT BENTe - D
x
~
Recl\enbcfehle wie -, xc cnd +
fiihr~n di~ B,'r~ehn'~ns
'k"
u:;mitlelo:u VOT dem
~ech,nberehl
cingq;etcnen
bcide,'
Z~llleilweIle
dUICh. Dajer wird
bci
d~r
.
. .,hi~""
Advertisement
