Panasonic JE-8401U Operating Instructions Manual
Matsushita Electric Trading Co., Ltd.
Trade Center P.O. Box
18
Tokyo
105
.
YLEE76036800
Printed
in
Japan
I,
',
:·
·
.,
' ..
. ,
, '
t;
t
..
Electronic Calculator
JE-8401U
I~
Before
operating
this
set.
please
read
these
instructions
completely
Contents
English ......................
..........
......
..............
...
.... .
Spanish ............................................................ 14""' 27
Chinese ...........................................
...
........ ······28""'
40
Sample Calculations
...
................
...
..............
41 ~ 49
.I~
1.
Some important Don'ts
1)
Do
not
use
or
place
this
unit
near sources
of
high
temperature,
in high
humidity,
in
direct sunlight
or
in
dusty
place
for a long
time.
It
may cause damage
to
the
cabinet
or
functional
failure
of
the
LSI and
other
components,
and re
sult
in
poor
performance.
2)
Do
not
open
the
cabinet.
If
the
unit
is
defective,
please
contact
your
nearest Panasonic
Electronic
Calculator
service cent
er.
3)
Do
not
use
thinner,
benzine
or
alcohol
to
clean
the
cabinet. Please use a
silicon·cloth
or
a
cloth
dampened
with
soap and
water
.
4)
Do
not
keep
the
batteri
es
inserted in
the
unit
so
as
to
prevent
leakage
if it
is
operated
with
AC
power
or
unu
sed
at
all
for a long
time
(one
month
or
so.)·
2. Main functions
This
model
is desi
gned
as
scientific calcul
ato
r,
claiming
the
following
calculating
functions
.
1)
Displa
y:
5-digit
mantissa
with
algebraic sign,
2-digit
exponent
with
algebraic sign,
or
8
digit
numeric
with
algebraic sign, and signs.
2)
Number
entry
either
in
floating
point
or
in
scientific
notations.
3) Alget:mriC
operation
for
arithmetic
functions.
4)
Automatic
repeat and
constant
operations
for
arithmetic
functions
and
yX
calculation
5) One
accumulating
memory.
6)
Scientific
functions:
sinx,
cosx,
tanx,
sin-1 x,
cos-1 x, tan-1 x,
eX,
lO
x,
Inx,
logx,
yX,
l/x,..;x;
x2,rr,
7) Degrees/ Radians /
Gradians switch
for
trigonometric functions
.
8)
Chain calculations in
scientific
functions
(except
yX) and D.MS-
operation
in
four
ru les!i
:,,
'\
:.
.
3. Before operation
1).
Dry
battery
or
AC
household
line
as
the
power
source.
a)
Dry
Batteries r
Remove
the
battery
cover and insert three
"AA"
size
dry
batteries
to
the
battery
case
in
~
specified (
+)
. ( - )
position
. As the
battery
power
nears
exhaustion,
the
display
wil
~
gradually
become
dark,
finally
disappear and
calculations
may
not
be
performed.
!
Replace
the
batteries
with
new ones.
- 2 -
b)
AC
Household
power
line
Use
Panasonic
AC
adaptor
JL-046,
JL-047
(E)
or
JL'()48
(E,
K),
specially designed
for
the
calculator.
Plug
it
in
to
AC
Household
power
I ine and
the
calculator.
Do
not
use
Panasonic
AC
adaptor
JL-026,
JL-027,
JL-028(E)
and
AC
adaptor
of
other
makers.
Disconnect
the
power
cord
of
the
AC
adaptor
from
the
wall
outlet
whenever
the
unit
is
not
in use.
JL-046
:
JL-047
(E):
This
adaptor
is
designed
for
power
sources
of
120V.
This
adaptor
is
for
power
sources
of
115V
(11
OV-120V)
and/or
230V
(220V-24QV)
by
selector
switch.
Please set
the
switch
correctly
at
your
local voltage
before
connecting
the
unit
to
mains
power.
JL-048E
(K):
This
adaptor
is
for
power
sources
of
22QV-240V.
JL-048
:
This
adaptor
is
for
power
sources
of
23QV-240V
.
2) Power
switch
Turn
ON
the
power
switch.
Then
"0"
appears
at
the
first
digit
from
right
in
the
display.
The
unit
is
ready
for calculations.
- 3 -
,1;;:'
,j
3)
Display
'
\'~
The
display
has
nine
digit
s displ ay tubes
under
two
way
dispfay
methods.
One
is
8
digits"~
numeric
with
algebraic sign,
overflow
sign,
memory
occupied sign and
function
sign.
The
other
is 5 digits
mantissa
with
algebraic sign and 2
digits
exp
one
nt
with
algebraic sign
(exponent
display).
In
the
exponent
display,
the
left-most
position
is
used
to
display
the
algebraic sign
of
the
mantissa,
overflow
sign,
memory
occupied sign and
function
sign.
The
next 5 position
to
the
right
are used
to
display
the
mantissa.
The two
right-most
positions
display
the
exponent.
The
position
between
the
mantissa and ex
ponent
will disp-
lay
the
minus
exponent
sign.
(Example
: When
the
display
is -1.
2300 -04,
this
means
-1..23x10-
4
.)
The
calculated
result will be
displayed
in
the
following
method.
1. 1 x
10
- 3
~
I res
ult
I ~ 99999999.
or
resu
lt
= 0 ,
.. ···
· in
floating
dec
imal
point
displ
ay
>-!
'
..
,
t
sign
2.
99999999.
< I
result
lor
Ire
sultl<l x
10-
3
..
.......
..
in
mantis
sa
and eXPOnent display
(exponent
displa
y system)
- 4 -
t
"
Mantissa
Exponent
r-----------,\
/
/ ,'- I
-I
-I
1 I
,-
C":
ri
I.
C
':1
-,.:J :-..
.'
t t
( sign.)
(Minus sign)
In
case
of exponent
display
system,
the
decimal
point
appears
right
after
the
fir
st
digit
numb
er
of
mantissa.
sign
display:
.'
_.'
Minus
sign
L{
Memory
occupied
sign
Sf Result
overflow
sign
, .
Function
sign
L)
. (This sign appears
when
F key is pushed)
4)
Number
entry
. 5 d" f
Max
imum 8 digits
number
in
floating
decimal
point
display. ma·x
lmum
Iglts 0
mantissa
and 2
digits of
exponent
can be entered
in
exponent
display
. Ex
ponent
numbers
can be entered
when
the
number
keys are depressed
after
EE
key,
and are
effective
in
two
digits
last entered.
If
more
than 6 digits
number
entered
In
the
display,
the
EE key
function
is
not
effective.
- 5 -
4.
Key
and
Switch functions
1) Numerals key
(0-9)
Sets
the
figure.
2)
Decimal
point
key
(.)
Sets
the
decimal
point
.
3)
Clear
entry/Clear
key
(
"c
E
)
During
number
entry,
a depression
of
the
CE/C
key
will
perform
a clear
entry
function.
The
cleared
entry
number
may
be
replaced
by a following
number
entry.
Function
mode
(F) and
overflow
condition
will
also be reset. When
the
CE/C
key
is
depressed
twice,
all
calculation
and entries
will
be
cleared except
memory
contents.
4) Plus key
(+)
Performs
addition.
5)
Minus
key
(-)
Performs
subtraction
.
6)
Multi"plication
key
(x)
Performs
multiplication.
- 6 -
7)
Division
key
(+)
Performs
division
.
8)
Equal
key
(=)
Performs
calculation
or
repeat
calculation
if
the
+,
-,
x, + or
yX key
has
been previous-
ly
depressed and the
command
of
such calculations
has
been given.
9)
M~mory_e.I':ls
key
(M+)
Accumulates
tl;le
contents
of
display
into
the
memory
store
.
10) Recall
memory
key
(RM)
Re~;;i\~the
-
m~mory~~~t~nts
to
the
display.
11) Clear
memory
key
(CM)
.
Clears
the
memory
conte
nts.
12)
Enter
Exponent
key
(EE)
The
EE
key
is
used
to
enter
the
exponent
numbers
during
number
entry.
When
the
EE
key
is
depressed
as
the
first
key
for
number
entry,
then
the
mantissa
is
automatically
made
to
be
1,
and
enter-exponent
mode
is
set.
Following
numeral
key depressions enters
a
power-of-ten
exponent
which
shifts
right-to-Ieft
through
the
exponent
digits.
The
last
two
digits
entered
constitute
the
exponent. If
the
EE
key
is
not
the
first
key
for
number
- 7 -
entry,
its depression
terminates
the
entry
of
mantissa and also sets
the
enter-expon.
ent
mode.
13)
F
~~y
,
(F)
Its depression calls
the
"e" sign
(Function
sign)
to
the
display
and enables
you
to
start
scie
ntific
calculations
as
in
function
modes
indicated
above each key.
Two
consecutive
depression relieves F
key
function
.
14)
Trigonometric
function
key (sin, cos, tan)
Performs sine, cosine and
tangent
calculations.
If
F key is depressed
before
this
key,
inverse
trigonometric
(sin-I x,
COS
-I x,
tan
-I
x)
is
performed.
15)
Common
and
Natural
logarithms
key
(log, In)
Performs
common
and natural
logarithms
calculation.
If F key
is
depressed before
this
key ,
Anti-logarithms
(lOX,
eX)
is
performed.
16)
Square
root key
(..jX)
Performs
square
root
calculation.
If F key
is
depressed
before this
key,
square
calculation
(X2 ) is
performed
.
17)
l/x
key
(l/x)
Performs rec
iprocal
calculation.
If F key
is
depressed
before
this
key, performs
entr
y
- 8 -
of
Pi
(3.1415926).
18)
X-M
key
(X-M)
Exc hanges
the
displayed
number
with
the memory contents.
19) y
to
the xth
pow
er
key(yX)
y
to
the xth
power
calculation
is
performed
if
the
following
operational
sequence is
observed.
That
is
to
enter
number
for
y, depress yX
key,
enter
number
for
x and
depress
=
key. If
F key
is
dep
ress
ed
before
this
key,
exchanges
the
displayed
number
with
the
previous
by
entered
number
to
perform
reciprocal
calculation.
20) Sign change
key
(+/-)
Changes
the
sign
of
ent
ered
the
mantissa
or
the
exponent
number.
If
F key
is
depressed
before
this
key,
performs Degr
ees
-Minutes-Seconds
to Deci mal Degree conversion.
21) Degree/
Gradian
/ Radian
mode switch
Selects Degre
e,
Gradian , Radian
mode
for
trigonometric
or
inverse
trigonometric
operation.
- 9
.-
5. Overflow condition
The
following
operations
simulate
the
overflow
condition
and call the
overflow
sign.
In
this
case, depress
CE/C
key
for
resetting.
1)
Basic
four
rules
* I
Calculat
ed
result
l
~
10
5 0
*
Divided
by
O.
2)
Memory
calculation
" I
Memo
ry
contentsl
~
10
.
50
(In
this
case, the last
calculation
does
not
affect the
memory
register, and
memory
contents
registered
prior
to
the
overflow
are retained.)
3 )
Scientific
calc
ulation
1/x
·····················x
= O, I X 1=
10
-
50
.;x·····················x
< O
x"····
······
·······
·
······10
25~1
x I
tanx····
···
···
·· ··
·······l0
3
~
Iresult l
sin-Ix,
cos-
lx,
..
···I < I x I
Inx,
logx··
·······
····
···
x~O
eX,
lOx
·············
·····l050~
I result I
yx
.........................
y~O,10
50~
lresult
I
IJ.
MS-+············· ····· I x 1<6 X
I0
-
50
( exce
pt
x = 0 )
-
10
-
.•
6. Automatic constant calculation
Automatic
constant
calculation
can
be
performed
in
all
four
rules and
yX
calculation.
After
calculation
is
completed
with = key
being depressed,
the
function
(+,
-,
x,
7,
or
yX)
and
the
last
operator
number
are
automatically
stored
as a constant
factor.
Same
type
of
calculation
can be
continued
by
entering a new
number
and depressing
the
corresponding
function
key
or = key,
as
shown
in sample
calculations.
7. Automatic repeat calculations
Repeat
calculations
can be
performed
in all
four
rules
and
yX
calculation
by
depressing =
key
or
function
key
continuously,
as
shown
in sample
calculations.
8. Calcu lation range and Accuracy
Function
s
Allowable
range
for
entry
Accuracy
Basic f our rules
10-
50
~
Ixl
<
10
50
±1
in
the
8th
digit
Memory
calculation
(except
overflow
cond
ition)
(±1 in
the
7th
digit
\
yx,
l/x,
Xl,
D.MS
..
in
division
and
l/x
)
-
11
-
Ixl < 10'
sin x (DEG)
(~
X~~\~
~~~~.~:l
..
< Ix l <
180n + 0.1)
cos x
(DEG)
Ixl < 10'
(except
89.9 + 180n
< Ix
1<
90.1 +
180n)
Ix l <
10·
tan x (DEG)
( excep t
180n-0.l < Ixl<
180n+0.l)
88 +
180n < Ixl < 92
+ 1
80n
sino, x,
cos"
x
0.01
~
Ixl
~
0.99
tan" x
0.01
::;
Ixl < 10
50
In
x,
'Iog
x
10
'50
::;
X < 10
50
(except
0.99
< x < 1.01)
eX
Ixl ~ 115.12925
lOX
I
xl
< 50
0<
y,
10'50
~
yX
< 10
50
yX
(except
0.99
< y < 1.01)
~
12 -
9.
Specifications
Computing
element:
Power
requirment:
±1 in
the
6th
digi
t
•
Memory:
Operating
temperature
:
±1
in
the
6th
digit
Display:
(
'0
<h'
"po",o
. )
display,±l
inthe
5th
digit
of
ma
ntissa.
Calculating
speed:
Dimensions:
Weight:
MOS/LSI
AC: 120V±10%
(JL·046),
11
0-120/220-240V±1
0%
(JL·047(E)),
230-240V±10%
(JL·048),
220-240V±1001o
(J L·048E
(K))
50/60
Hz.
(Through
optional
AC
adaptor)
DC:
.4.5V
(3·AA
size
dry
batteries)
Power
consump
tion: AC
4W Max.
DC O.4W Max.
1
Memory
32
to
104
degrees F (0
to
40
degrees
C)
Mu
Iti·d
igit
fluorescent
disp
lay
tube
1.6
sec.
Max.
W.
88mm
(3
15/32
inches)
D.
150mm
(529/32
inches)
H.
32mm
(1
17/
64
inches)
170g
(6
oz.)
without
batteries 227g (8 oz.)
with
batter
ies
-
13
~
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