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  9. Sharp COMPET ELSI-811 User manual

Sharp COMPET ELSI-811 User manual

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ELECTRONIC
CALCULATOR
WITH
[ELSI]
esa
mooeL
EL=-811
INSTRUCTION
MANUAL
CONTENTS
ENIROD
UO
GTRLOIN
a
saseres
crencrerenerrtraretrertts
Sita
cinscagpsticcasdsanissnaisaciustistinasiigiins
1
FEATURES
EXTERNAL
FEATURES
..
KEY
IDENTIFICATION
SPECIFICATIONS
HOW
TO
REPLACE
THE
BATTERY
UNIT.
CAUTION
ON
THE
BATTERY
UNIT
DOUBLE
CAPACITY
CALCULATION
......ccssccssseseesseesseessecssseesseenseess
14
OV.ERFLOW-LERROIRSDETEGTION
sc
seissesesseresssoramcivsenrsbeartemneeraontenvegs
17
ORE
RATION
rcs
scnecencnscttcae
cnececesemecttiae
tonnes
mess
ntactiea
sy
nia
22
INTRODUCTION
Sharp's
amazing
Compet
EL-811
incorporating
two
ELSIs
(Extra
Large
Scale
Integration)
another
major
advancement
in
the
world
of
space-age
miniaturization.
Y
ears.of
pioneering
research
and
achieve-
ment
in
electronic
engineering
have
enabled
Sharp
to
develop
an
exceptionally
remarkable
to
world’s
most
personal
electronic
calculator
with
one
memory
register
and
double
capacity
mode,
offering
both
maximum
portability
and
a
wide
range
of
mathematical
versatility.
The
EL-811
is
thoroughly
reliable
and
carries
out
calculations
with
amazing
speed
and
efficiency.
This
booklet
provides
a
detailed
ex-
planation
of
the
Compet
EL-811’s
operation.
FEATURES
fe
Ultra-compact.
So
small,
it
can
be
operated
in
the
palm
of
your
hand.
The
utilization
of
ELSIs
results
in
the
reduction
of
overall
dimensions
and
weight,
increased
reliability
and
lower
operating
costs.
.
Double
capacity
In
multiplication
and
division,
answers
up
to
maximum
numbers
of
16
digits
can
be
obtained
even
though
EL-811
only
has
8-digit
display
panel.
In
division,
can
divide
16
digits
by
8
digits.
The
upper
8
significant
digits
of
the
quotient
are
obtained
as
a
result
and
the
lower
digits
are
zeros,
However,
the
integral
number
of
the
quotient
exceeds
8
digits,
only
the
decimal
position
is
memorized
in
the
lower
digits.
.
Wide
range
of
calculations
In
addition
to
its
four
arithmetical
calculations
and
double
capacity
calculation,
successive
multipli-
cation
and
division,
repeat
addition
and
subtraction,
discount
or
tax
calculation,
memory
calculation
and
other
mixed
calculations
can
be
quickly
performed
with
maximum
efficiency.
.
Convenient
constant
multiplication
and
division
In
multiplication
or
division,
multiplicand
or
divisor
is
memorized
as
a
constant
number
automatical-
ly.
After
performing
the
multiplication
or
division,
constant
calculations
are
performed
by
setting
variable
number
and
(EB)
key
only.
Rapid
charging
When
AC
power
is
supplied
to
the
EL-811
through
the
AC
adaptor,
with
the
power
switch
is
placed
in
the
OFF
position,
the
battery
can
be
charged
approximately
3-hours.
After
charging,
the
EL-811
will
operate
on
battery
power
for
approximately
3.5-hour.
When
the
battery
is
charged
in
5-hour,
it
is
charged
more
perfectly.
6.
Operates
on
three
separate
power
sources
AC,
built-in
rechargeable
battery
or
12V
car
battery
as
desired.
7.
Convenient
lamps
for
memory,
lower
digits
indicator,
constant
mode
indicator,
and
battery
level
indicator.
(Refer
to
page
4
‘External
features”
for
further
detailes)
8.
“Zerosuppress
system”
makes
reading
figures
easier.
9.
Automatic
clearing
system
The
machine
is
automatically
cleared
when
the
machine
is
turned
on.
Therefore,
the
calculation
can
be
started
immediately,
10.
Operation
is
possible
even
in
the
case
of
momentary
power
failure.
Even
when
the
power
cord
is
disconnected
during
operation
with
AC
power
source,
the
operation
can
be
continued.
11.
Soft
lighting
green
display
Our
specially
developed
non-glare
green
display
panel
eliminates
eye-strain,
improves
reading
ease.
12.Convenient
carrying
case.
Always
ready
to
go
with
you
and
assist
you,
whether
it
be
in
the
office,
schoo!
or
at
home.
EXTERNAL
FEATURES
(a)
(b)
(c)
(d)
CHARGING
LAMP
When
operating
the
EL-811
on
AC
adaptor,
this
lamp
indicates
at
all
times.
This
lamp
also
indicates
during
rapid
charging.
When
the
battery
voltage
is
below
the
normal
limit,
this
lamp
will
be
lit
and
will
gradually
fade
as
the
battery voltage
increases.
This
state
indicates
batteries
have
been
charged
up
to
some
extent.
MINUS
SIGN
INDICATOR
(—)
Automatically
indicates
when
the
result
becomes
negative.
CONSTANT
MODE
INDICATOR
(K)
Turns
on
when
multiplication
or
division
is
performed
by
toudh-
ing
5,
(gE.
im}
)
key,
and
multiplicand
or
divisor
is
mem
ed
as
a
constant
number
automatically.
This
indicator
is
turned
off
when
the
J.
.
Jo
&
is
touched
after
multiplication
or
division.
(Refer
to
page
28
“4.
Constant
multiplication
and
division”
for
further
detai
LOWER
DIGITS
INDICATOR
/
BATTERY
LEVEL
INDICATOR
(+)
Turns
on
when
the
lower
digits
of
double
capacity
are
displa’
by
touching
the
key
and
turns
off
when
the
upper
digits
displayed.
Also,
turns
on
when
calculations
can’t
be
performed
|
by
the
decrease
of
the
battery
voltage.
In
this
case,
the
indicator
will
not
turn
off
even
when
io}
key
is
touched
and
miscalculation
occurs.
(e)
MEMORY
LOADING
INDICATOR
(I)
Turns
on,
when
the
content
of
memory
register
is
not
zero.
(f)
POWER
SWITCH
ON
—
OFF
position.
(a)
When
AC
adaptor
is
connected
with
calculating
unit
and
AC
power
source:
0)
ON
position:
You
can
operate
on
AC
power
and
the
battery
unit
will
be
charged
during
operation.
The
charging
lamp
indicates
at
all
times.
Even
when
the
power
cord
is
disconnected
during
operation
or
in
the
case
of
momentary
—o4
power
failure,
the
operation
can
be
continued
by
battery
power
without
mis-
calculation
because
a
power
source
is
exchanged
the
battery
power
automatical-
ly.
In
these
cases,
the
charging
lamp
turns
off.
@
OFF
position:
Performed
rapid
charging.
(Refer
to
page
2
“Rapid
charging’)
(b)
When
AC
adaptor
is
not
connected
with
calculating
unit:
cal
0
ON
position:
You
can
operate
on
battery
power.
Q
OFF
position:
The
calculating
unit
is
not
operated.
(c)
When
AC
adaptor
is
connected
with
calculating
unit
and
not
connected
with
AC
power
source:
ON
position:
You
can
operate
on
battery
power
and
charging
lamp
on
AC
E
adaptor
does
not
indicate.
@
OFF
position:
The
calculating
unit
is
not
operated.
KEY
IDENTIFICATION
G
Clear
key
Depressed
once
after
an
entry,
clears
only
the
entry.
When
a
mistaken
number
is
entered
after
setting
a
function
(x
or
+),
also
clears
the
function.
Depressed
twice
clears
all
the
contents
except
memory
register.
[o}
~6
Numeral
keys
Used
for
entering
numbers.
|
+
|
Decimal
point
key
Determines
the
decimal
point
position.
Change
sign
key
Changes
the
sign
of
the
displayed
number.
EQ
Multiplication
key
Orders
multiplication
and
starts
operation
when
chain
calculations
are
performed.
B
Division
key
Orders
division
and
starts
operation
when
chain
calculations
are
performed.
Plus-equal
key
Orders
addition.
Also
derives
product
or
quotient
with
double
capacity.
[-=|
Minus-equal
key
Orders
subtraction.
Also
derives
product
or
quotient
with
double
capacity
in
the
case
of
negative
multiplier
or
divisor,
Depressed
after
multiplication
or
division,
clears
the
constant
mode
function.
Memory
recall/Clear
memory
key
Depressed
once
summons
the
contents
of
memory
on
the
display
panel.
Depressed
twice
successively,
clears
the
contents
of
memory.
Memory-plus
key
a)
Without
multiplication
or
division
function:
Orders
to
add
the
displayed
figures
to
the
contents
of
memory
register.
b)
With
multiplication
or
division
function:
Orders
multiplication
or
division
and
adds
its
product
or
quotient
to
the
contert
of
memory
register.
Upper
/
Lower
digits
recall
key
Depressed
once
in
the
answer
of
double
capacity,
summons
the
lower
digits
of
the
answer
on
the
display
panel.
Depressed
twice
successively,
summons
the
upper
digits
again.