Commodore 9R23 Bedienungsanleitung Seite 2

ca:widtor features a 4 key mem ry,
ang,percentage (models
or 4-kevmemory,squareroot, X , reciprocal
andpercentage (models 9R25,9D2S). It should
give you many yearsof satisfactory service.
Before you begin to use this calculator, we suggest
you spenda few minutesreadingthroughthis small
brochure so that you can derive the utmost
satisfaction from its use.
People Logic:
Your calculator thinks with "People
neers refer to it as "Algebraic Logic." This simply
means that your machine accepts examples in the
very samesequenceasyou would think out a prob-
lem.
The floating decimal allows you to place the deci-
mal in any position and get a decimal-perfect an-
swer.
Basic Four Function Chain
Your calculator will "chain"
four functions: you can multiply
divide after multiplying, subtract
so forth, without re-entering
display.
Characteristics of 9th or left-most
Your calculator has nine digits in the display. The
left-most is used to indicate:
• Overflow (l) when the problem exceeds the
capacity of the calculator.
• Underflow ) when the result would
small to be displayed
Negative sign (—01
(Note: If you wish to enter a negative number;
e."4 x —76 +8,youmayenter t heprobiUm in
oxactly_vyttashion. The —76will Showin the
Qégative VA'iTVhave-
display
is —
Logic." Engi-
Operation:
through each of the
after adding,
after adding, and
the last figure in the
digit:
be too
correctly.
value.[The answer
use signal (.) apoears in left-most
position to indicate data in memory. This can-
not hc confused with a decimal; a seriesof digits
precededbv a decimal will alwayshavea
preceding the decimal.
Please Read:
If your calculator suddenlybeginsto act strangely...
it may need recharging. This condition can cause
your machine to showwrongnumbers or makethe
display flicker or dim or not light at all. This is a
suresign of erratic battery power. Your machine
does not require service,just recharging. Please
refer to the section in this booklet: "Rechargeable
Power Supply."
—CLEAR/CLEAR
Whendepressedonce during a number entry the
CICE will clearthe entry only. At all other times
will clear the machine completely except for the
memory. (Pressingthe
ways clear all but memory)
AUTOMATIC CONSTANT
EXPONENTIATION:
Your calculator has an automatic constant in all.
four functions.
Auto-constant Mode
The first factor of multiply and the second factor
of addition, subtraction, and division are stored bv
the calculator logic after execution is complete.
This stored constant factor may be usedin repeated
operation of the same function.
Example 2 3
5 @ 10
ENTRY KEY
kev twice will al-
AND
6
whe