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HOW TO CHANGE BAlTERIES
Your calculator openrtes from two UM·3 batteries: (SiZe "AA" or equi
4
val~U.
To chaoQfJ batteries. make sure
the power
switch
is.
In the "OFF'
position. Remove the battery cover.
Remove
.and discatd the-nt-d batteries.
When inserting MW
batt~rles.
obsefva the battery polaritY. Cam. to the
eakula.tor can be caused by incorrect Placement of the batteries. Close the
battery COver. A dimlY' lighted display is an indIcation that
the
battery
voltage is low. "TMs
is:
the time- to replace the batteries. with fresh ones. U
the
batteries
beCOI'M
too low. ttl-e ealculator wUl
become
inoP0:f3tive.
KEYBOARD ORGANJLATJON
The follOWing is a brief expl<l.nation of ttle function of each key and
imflC3tor found on the keyboard of
the
Accumatlc TM 309.
o.nIT ENTRY KEYS
@J
through
ill
~ Pressing OtW of these keys wiU enter fhat digit. into
thQ
rightmost dlsPlay pootioo. Previousty entered digits wltl
be
shifted one
position to the teft.
DECiMAL POfNT ENTRY KEY
EJ :
Depress]on of this 1cey will correctly position the decimal point in
your entries.
ARITHMETIC FUNCTfON KEVS
G . 8 .
GJ .
(±] ;
Depression of anyone of the::"-}
}'.e~·
.'131\>:
the
ca1culator what operation to perform with
the
next
IWni':lt-;·
,t>k'X"".
Doring calculations. intermediate results. are also displ.J:tVed
'."i"<r,>
'h;}Jl:t
<"_
' J "
are
depressed,
EQUAL KEY
G :
Wben ttle
G
tey is depressed. the an$wer
wilt
appear on the
display.
PERCENT KEY
00 :
Depresl;ion of tMs
ktW
causes the
RlJmbc-r
on the display to
bf)
expressed- as
It
percentage.
Pl KEY
£!I - :
Depress this key fClf pi calculation.
SQUARE ROOT KEY
hh1
~ Depression
of this key performs the square root of the displayed
n~.
CLEAR ANDCLEAF'l EN-TRV KEYS
© .
@ :
Depl1%5ion af
the
ele-ac ~ key performs the following
functions:
1. Resets
the
everUQw condition.
2. Clears. aU registers: of the calculator and places a zero- i" the rightl1\-OSt
position.
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