
~:
"
, ,
.
t
';"
® Pri
nt
ed in
Japa
n
~
SCIENTIFIC
CALCULATOR
'" .
SPE~'r'1~RSMINGTON
7 " SSR-8
OPERATOR'S
INSTRUCTION
MANUAL
The m
(BM
mark)
is
evidence
of
a qualified calculator
as
approved by th e JAPAN BUSINESS MACHINE MAKE
RS
ASSOCIATI
ON
to be a quality product backed
up
by
adequate service after
sale.

INTRODUCTION
Dear customer,
Congratu lations on
your
purchase
of
this ad-
vanced personal
electronic
calculator.
Th
is
sophisticated
mode
l has
10
special keys
making
it
high ly valuable
for
scientific
and all
ki
nd
of
research
work.
Besides
the
basic capabilities as
ordinary
personal
calculator
- constants in all 4 basic
functions,
fu
ll
floating
decimal system, and a
handy
palm-
sized
style -this
model
is
equipped
with
capa-
bilities
for
computing
10
specific
scientific
f nc-
lions
at
one
touch.
To
uti
lize
full
features
of
this
calculator,
no
special train ing
is
required
but
we suggest you
take a
few
minutes
to becom
e fa
mil
iar w
ith
this
instr
uct
ion
manual.
It has been
written to
assist
you
in understanding
the various
contro
l keys and
functions
of
the
calculator
through simple
examples and
their
applications.
INDEX
1
KEYBOARD
2
HANDLING
OF
THE
CALCULATOR
3
DISPOSABLE
DRY
BATTERY
OR
AC
OPERATION
3-1
DRY
BATTERY
OPERATION
.
3-2
AC
OPERAT
ION
......
4
OVERFLOW
5
BAS
IC
OPERATIONAL
EXAMPLES
.
6
CA
LCU LATION WI
TH A CONSTANT
7
CORRECTION
B
FUNCTION CALCULAT
ION
8-
1
TRIGONOMETR
IC FU NCTION
8-2
EXPONENTIAL
AND
LOGARITHM
IC
FUNCTIONS
8-3
POWERS,
SQUARE
ROOT S
AND
REC I
PROCA
LS
8-4
CALCULATION INVOLVING.
9
PRACTICAL
APPLICA
T IONS
10
SPECIF ICATI
ONS
CARE
OF
YOUR
NEW
ELECTRONIC
CALCULATOR
2
3
3
3
3
4
5
6
7
8
.10
.
11
.12
. 13
.16
..
16
1 /
KEYBOARD
13)
, 1. , :J j LI
. . ,
,_.:t
I
r
~
I I
:
~
12)
~
--------
---
------~
11)
-----aD
19) 110) 111)
112) 113)
log
In
.'
a"
V;r
= = =
=
=
0,,,
,;
"
'"'
to
" r
= = =
=
=
(1)
ON
-OFF SWITCH
To swi
tch
on, move
the left-hand
switch
to
the
right
" 0
,"
is
displayed in the read-out and
you
c
an
sta
rt
operation immediately w
ithout
depress-
in
g the
C3
or
Ii
key.
(2) READ-OUT
An
8 dig
it
capacity
Dig
itron
tube pane l brig
htl
y
displays each
entry,
eac
h resu lt w hether f inal or
i
nt
ermediate .
(3) ZERO SUPPRESSION
Unnecessary O's
(ze
roes) are supp
resse
d.
(4)
@l-®.
[J
NUMERAL
and
DEC)MAL
POINT KEY
Enters n
ume
rals
to
the read-out, If the
num
ber
includes
the
decima l point
, use the 8 key in its
logical sequen
ce,
For example, to
enter
the
num
-
ber
12.36,
depr
ess
OJ
m 8
@J
00 .
When
decimal pl
aces
are i
nvolve
d, a
full floating
decimal
poin
t system w i
th
wh ole nu
mber
pref
-
erence (un
derflow)
is applied
automatically
in a
ll
calcu
lat
ions.
(5) D ·
I:H3
'ell' a FUNCTION
COMMAND
and
RESULT KEY
Commands the functions
(+,
-,
x
or
+1.
Depress
the appr
opr
iate. funct
ion
keys as th
ey
appear in
1

2
the written
problem a
nd
the
answer
is
obtained
oy depressing t
he
e key.
Note th
at
any
commands
wrongly made can be
corrected by successive depression
of
the
proper
command
key.
(6)
III CLEAR
KEY
Clears
keyboard entr
y for
correction.
When 'de-
pressed immediately
after
any of the
comma
nd
keys
(D,
c::::I
,
EI
or ~ L it does no t f
unction.
(7)
CiI
ALL
CLEAR KEY
Clears
the
ent
ire machine and releases the ove
r-
flow check .
(8)
iii
" KEY
Enters
the
circular co
nstant
in
7 digits
(3.1415921.
(9)
§]
COMMON
LOGARITHM
KEY
Obtains
the
common
logari
thm
of
the
display.
(10)(8
NATURAL
LOGARITHM
KEY
Obtains
the
natural logari
thm
of
the display.
(11)
~
EXPONENTIAL KEY
Ob
tains th e exponential
of
the
display.
(12) l!:l N-th
POWER
KEY
In
structs
the
display to raise
to
N-th
pow
er.
(13)
~
RECIPROCAL
KEY
Obtains
the
reciprocal
number
of
the di splay.
(14)8 SEXAGESIMAL
....
DECIMAL
. CONVERSION KEY
Converts the display
to
th e decima l scale.
(15)8 SINE
KEY
Obtains
the
sine
of
the
angle on display.
(16) 8 COSINE KEY
Obta
ins the cosine
of
th e angle o n display.
(17)8
TANGENT
KEY
Obtains
the
tange
nt
of
the angle
on
display,
(18) 0 SQUARE ROOT KEY
Obt
ains the square roo t
of
th e display.
2 /
HANDLING
OF
THE
CALCULATOR
Befo
re
operatio
n, please be sure to check the
pro
per setting
of
the dry
batteries
or conne
c-
tion
of
the
AC
Adaptor.
The
calculator should be o
perated
correctly
in
accordance with this instruction manual with
firm and sepa r
ate
key pressing. Two
or
more
numeral andlor
comm
and keys should
not
be
pressed simultaneously,
as
this may damage
the mac
hine.
:3
/
DISPOSABLE
DRY
BATTERY
OR
AC
OPERATION
This calculato r
ope
rates on eithe r
dry
batteries
or
AC
wit h the use of
the
AC
ADAPTOR.
3-1 DRY
BATTERY
OPERATION
With fo
ur
Alkaline
dry
batte
ries (AM·3J it
operat
es for
approximate
ly 17
hours
continuously.
Even
when
batte
ry power d ecreases, the display will merely darke n b
ut
cause no miscalculation,
When you have finished
your
calcu lati
on,
be su
re
to
switch
off
the
power
switch
to
save
battery
power
.
To
change
batter
ies, pu t
the
power
switch
off
first. Sl ide ope n
the
battery
cover
and replace
batte
ries.
3-2
AC
OPERATION
If
you are in a 117V area, for instance. use a 117 V
AC
ADAPTOR.
When, you u se an
AC
ADAPTOR
of
a differe
nt
vol tage,
it
may cause
dama
ge
to
both
th e
AC
ADAPTOR a
nd
calculator.
Plug
the
applic ab
le
AC
ADAPTOR (100, 117 , 220 o r 240V) into the
AC
ou tlet and t he
cord into
the calcu lato
r.
When plugged in,
battery
power
supply stops
automa
tically, so b
attery
power
is
not
wasted ,
4 /
0VERFLOW
Principally. overf l
ow
occurs
when
the
integer
part
of an answer exceeds 8 digits
17
, when
the fig
ure
is
negative) and stop s
furthe
r calculation, showing D's (zeroes) on
all
columns.
In
function calculations, h owe ver, the overflow also occurs
in
th e fo llowing instances:
a)
When eithe r a
common
or natu
ral
logarit
hm
of
0 (ze ro)
is
obtained
b) When t he
trigonom
etric
functions
are perf
orme
d for a degr
ee
exceeding ±
1440
°
c)
When
the
exponentia
l function
is
performed
for a num
ber exceeding
:1:
10.
d)
When
the
answe r
of a Ta
ngent
is
larger than ± 1000.
Depress the
ell
key to release the
overflo~
check pri
or
to starting a new calculation.
3

4
5 /
BASIC
OPERATIONAL
EXAMPLES
Press
the keys
in
exactly the same ,sequence
as
they appear
in
the problems. There is no need to
depre
ss
the 13
or
a key prior to starting
each
new calculation,
as
automatic clea ring takes place
wit
h the new entr
y when you
ha
....
e finished the previous
ca
lculation on the e key.
When the answer
is
negative, the minus
(~)
sign
appe
ars
on the teft
of
the f
igure.
EXAMPLE
OPERATION
READ·DUT
23+56+89
168
230
23.
560
79.
(23 + 56)
89a
168
(Answer)
1.2+4.56-52.369~-46.609
1 8
20
1.2
4 8 561:1
5.76
(1.2
+ 4 .
56)
528369a
46.609
(Answer)
41.36X789.2~32641.312
41836
£I
41.36
I
78982a
32641.312
:
(Answe
r)
3.059+1.288+0.222
3 8
0590
3.059
~
1
0.698198
1 8
2880
2.375
I
(3.059
-:-
1.288)
8
222a
10
.698
198
1
(An
swer )
12
.36
x 7 .53x
8412
12836£1
12.36
I
~
782911.56(961
7853
£I
l
93.0708
1
(12.36)(
7.53)
8412a
782911.56
I
(96
is
dropped
off)
Note: 1)
When
an
answer
exceeds
8 digits including decimal
places,
the underflow system works
to
drop
off
the least significant decimals
as
in
the above example.
Note: 2)
When
a problem commences from a negative figure, operate
CJ
ICI
ENTRY
in
its sequence
and the negative figure can be entered
in
all calculat ions.
6 /
CALCULATION
WITH
A
CONSTANT
Durin~
operation, the .number entered immediately before the B key
is
automatically set
as
a con-
stant
In
all
four functions.
When
a new
ope
ration
is
made,
it
clears the previous constant and sets
the number entered
in
the same manner as a new constant automatically',
ENTRY
£I
(0
. 0 .
1:1 J ENTRY
a
L
I ______________________
~
01
To be set as a constant.
PROBLEM
Constant addition
Constant
subtraction
Constant
multiplication
Constant
division
EXAMPLE
1 +
2.3
3.3
4+2.3 ~
6.3
7 I
2.3~9.3
4
-
5.6~-1.6
12.3
-5.6 ~
6.7
78
-5.6
~ 72.4
9
X12~
108
4.56x12~54.72
1
.2
x12~
14.4
74+2.5
~ 29.6
8572.5~34
96+2.5~38.4
OPERATION
10283a
4a
7a
41:158
6a
12
8 3 a
78a
9EJ12a
4 8
56
a
1 8
2a
7402
8 5 a
85a
96a
READ·DUT
3.3
, (1 +
2.3)
r----
----
-.6'C.,..,3rl.
(4 + 2.3)
~=
===~9=.~3~
(7 + 2.3)
1.6
,
(4-5.6)
'-------"""'6"".'":0
701
(12.3
-
5.6)
~
'===~
7~2~.~4
~.
(78
- 5 .
6)
108
.1
(9x
12
1
r-------.5'"4".""
7"'2
H
J
(4.56
x 1
2)
14.4
1
(1.2
x
12)
;===~2;;9~
.~6
~'
(74
-.:
2.5)
r----=:;3C;'4'-1
..
(8572.5)
'-
______
..:3"'8=-.,.:
4::..J
(96
~
2.5)

PROBLEM
E
XAMPLE
OPERATION
READ-OUT
Add
ltion/su
btraction
3 + 9 + 9 - 6
6 9
3D99
~13+91
by
repeat
9
21,
(12+9)
1:169
15. 12' -
6)
9
9.
(15 -6)
Square and
power
2.5'
6 .
25
2 [:]
5D
9
I
6.25
(Square)
calculation
2.53 15
.625
9
I
15.625
(3rd power)
2.5
4
39.0625
9
I
39.0625
(4th
power)
Note
: When u
nderflow
works
in
addition/subtraction with a constant, the deci
mal
places
of
the
con
stant
is
also
cut
off
in
accordance with the underflow act ivity.
For
instance.
if
you
perform
12345.6 + 0.1234 = 12345.723(4),
0.123
is
set
as a constant
instead
of
0.1234,
as
the least significa
nt
decimal
digit
is
dropped
off
by
the
underflow.
7 /
CORRECTION
Use
the a key
to clear a
wrongly
entered
number
and
re-enter
the
right
number
.
EXAMPLE
OPERATION
REAO
OUT
11 r22+
32
65
11 D
1 1 .
22D
33.
(Mistake)
34
34
.
(To
clear)
a
O.
329
65.
Any
commands
wrongly
entered can be
corrected
by successive depression
of
th e
proper
command
key.
The last
command
made
by
either
D ,
CI
, £I
or
g key is
effective
.
EXAMPLE
OPERATION
READ·OUT
B
(Mistake)
g
(To
correc
t )
CI
39
~
.
B.
B.
5.
a /
FUNCTION
CALCULATION
This
calculator
computes
10
specific
scientific
functions
at
one
touch
independent
of
the
basic
ar
ithmetic
cal
culations.
So
it
is necessary to change
the
order
of
operation
when
you
desire to
use
some
of
the scientifi
c
functions
as a subrout
ine
of
th e basi c
calculat
ion,
in
order
to
perform
the sci
entific
functions
first and
to u
se
the result in basic
calculations.
For
example, when
you
perform
such
an
operat
ion
as
[5 x sin 30°
], calculate
[sin 30" ] first
and
mult
iply 5 to the answer
of
[sin
30
° I on
display.
However,
the
0 ,
~
,
lO
and m keys can be used
as
subroutine
in
the
midst
of
basic
calculation
s.
Note
that
automatic
clearing
is
also
made
in
function
calcu
lati
ons and there is
no
need
to
depre
ss
the
C3
key
prior
to starting
the
new
problem.
* T his calcu la
tor
computes
as
1T
=
3.141592
and e =
2.7
18281 8 respectively.
SEXAGESIMAL
-+
DECIMAL
CONVERSION
The 8 key
converts
the
sexagesimal figur
es
(Degree,
Minute
,and Second)
to
decima
l scale.

12
The (lil key obtains the reciprocal number of either entry or result .
EXAMPLE
1
0.789 = 1.267427
.
1
3+"5
=
0.125
1
3 x
45
=
0.0666666
F _
'" -0.6454972
..
2 x v 3
OPERATION
8
789
1ffi
3D 5 El
iffi
3E145
1ffi
Ei
B-4/CALCULATION
INVOLVING
7r
Th
e 13
key
enters the circular con
sta
nt
in 7 digits
(3.141592).
EXAMPLE
OPERATION
1T
=
3.141592.
III
21T
= 6 .
283184 ...
2E11l1E1
e _ _ 1_ = 2.3999701
..
l~I:IIlI
Iffi
Ei
•
READ·OUT
1.267427
1
0.125
1
0.0666666
1
0.6454972
1
READ-OUT
3.1415921
6 .
283184
I
2.3999701
I
Note
: By using the following formul
a,
Degree-+Radian conversion (or vice
versa)
can
be
performed.
1 rad
=
180
•
EXAMPLE
1 rad -
57.295779° ..
25
° =
0.4363322
...
rad
cos
12.5 rad) =
cos
143.23947
°
=- 0.
80114 ...
OPERATION
180DIlIE!
25E1Il1D180El
2 8 5
Ell
8 o
Dill
E!
8
READ·OUT
57.29579
1
0.4363322
1
143.23947
1
0.80114.
S /
PRACTICAL
APPLICATIONS
1)
TRIGONOMETRY
e
0
Determine a and b
in
the figure shown left when
r
is
4.472
(cm)
and
8 is
26° 33' 54".
{FORMULA]
a =
r·
cos
8
b = r·sin8
OPERATION
268338 5488E14 8
472
EI
26833 85488E14 8 4 7 2
EI
READ·OUT
3.9998462
I (em) [
01
1.
9999231
I(em)
l=bJ
13

14
Note
: 1) When a and
(J
are
given, b is also
obtained
by
the
following
formu
la.
b - t 8 I a =
3.9998462
(em )
-
a·
an
e = 26
0
33'
54"
[OP
ERATION]
2683385488£13099984626
....
1 1 .
9998831
lIeml
2) When r and a are given. b is also ob
tai
ned
by the foll
owing
formula.
b=~
I
r =
4.472
(em)
a = 3.99984621eml
[OPERATION]
4 0
472
[;")
21:13 0 9998462
[;") 2 6r.
....
1
2.00000311eml
2)
AREA
OF
CIRCLE
s
Determine the
semi-diameter
(r)
in the
figure
shown .
Ieft
when
the
area
of
circ
le (S)
is
20 cm
1
.
[FORMULA)
S =".
r'
OPERATION
READ-OUT
20Cll136r.
2.52313211eml
[_rl
3) CUBIC VOLUME
~
r
IE-
'*--rl~
I I I I
Determine
the
cubic
volume (V)
of
the
figu
re sho
wn
left,
when r = 2 (em) a
nd
f j =
15
(em
).
(FORMULA
] V =
21T'
.
rj . r'
OPERATION
READ-OUT
2£113
[;")
261315132
[;")
26
1184.352
Ilem'l [ V]
4) ELECTRIC CURRENT IN
TRANSIENT
PHENOMENA
---
I
R
L
De
termine
the
ratio
of
electric
current
(i) in
the
RL cir
cuit
(R
=
20.0,
L =
3Hl shown
left
0.2 second
after
the
switch
is
closed.
R
--t
[FORMULA] ; =
~
11
_
eLI.
1=
~
OPERATION
R
-
-t
i 100
=(1-e
L ) x 100
IX
READ-OUT
~1:I20Cll3£1026
[;,,)
1:I66G1131006
73.641
(%)
,
15

16
10/SPECIFICATIONS
OPERATIONS,
Addition,
subtraction,
~ingf.e/chain
mur~iplication,
single/chain
division,
addition/subtraction
by
~epeat!
const~nt
calculation In four functu::lnS,
mixed calc
ulation
,
true
cred
it
balance
and
calculation
involving
decimal places. .
Trigonomet
ric
functio
ns (sin! cos, tan), comf!1on and natural log
arithms,
exponential
function.
square
and powers, square ro
ot,
reciprocals. sexageslmal /decimal
conve
rsion and calcu
lation involving
ft.
CAPACIT'y: .
Input
~~nge
. .
Output
Entry
/ba
SIC
fun
ctIOns 8
digits
(7
digits
when a figure
is
negative) 8
digits
sin/cos/ta
n .
_
360
o~x~
360
°
6 digits
Common/natural
logarithms
O<x<108 (Negative figure
is
processed
as
positive) 6 digits
N·
th
pow~r
(an) _ _
10
1
<a<
1 0
8
(O
;:i;n~
9;
n =
who
le
number)
8
digits
Ex
ponential
functIOn -10<x<10
6 digi ts
Squ?re
root
0&
x<10
' (Negat ive figure is processed
as
positive) 7 digits
Reciprocal -
101 <x<10' 8
d'
't
Sexagesimal /decimal conversion
O<x<
1 0 ' 8
d;~;t~
1r
7
digits
DECIMAL
POINT:
Full
floating decimal
point
system
with
underflow.
NEGATIVE
NUMBER:
Indicat
ed
by
minus
(-)
sign up
to 7 digits.
OVERFLOW
: Checked
by
zero
indication
on all co
lumns, locking
the calcu l
ator.
READ-OUT:
Green
Oigitron
tube
panel an'd zero suppr
ession.
MAIN
COMPONENT:
One
chip
LSI
POWER
CONSUMPTION, 0.45W
POWER
SOURCE: AC
100
, ;
17,220
or
240V
(±10
V), 50/
60Hz
wit
h applicable
AC
Adaptor.
DC
UM-3
or
SUM-3
(Manganese
dry
battery)
x 4 (piecesJ.
Continuous
operation:
Approx
. 8 hours.
AM-3
(Alkaline
dry
battery)
x 4 (pieces) .
Continuol,ls
operation:
Approx.
17h
ou r
s.
USABLE
TEMPERATURE,
0° -
40
C 132° - 104°F)
DIMENSIONS:
33mmH x 95mmW
x 15DmmO (1- t /4" H x
3-3/4"W x 5-7/8"0)
WEIGHT
:
330 g (12 oz), includi
ng
batter
ies.
CARE
OF
YOUR
NEW
ELECTRONIC
CALCULATOR
This
calculat
or
is a durable, precision-made
instrument
which
will
provide
you
with
years
of
trouble-
free service.
To
help
ensure this we
recommend
that
the ins ide
of
the
calculator
not
be
touched
. It is also
inadvisable
to
subject the ca
lcul
ator to
hard
knock
~
drops, and
unduly
strong key pressing.
Extreme cold (bel
ow
DoC
or 32°
F),
heat (above
40
C or
l04QF)
and
humidity
may also
effect the
the
function
of
the calcu
lator. When
you
do
not
use the calcu la
tor for
a long
period,
take
out
the
batteries and store in t
he
carrying
case
to
prevent
damage
if
the batteries leak. Pl
ease
make
sure
you
switch
off
the
power
when
you
finish
your
calcu la
tions
or
int
end
to
open the cover
to
change
batteries.
Should
the
calculator
need service, take the
unit
to
the store
whe
re purchased or
to
a nearby deal
er.
cb~~c!xbcbcb~c!xbcb*cbc!xbcb~cb~1
WARRANTY
New
SPE~Y-}R.E
MIN GTO
N
Consumer
Electronic
Calculators are
warranted
to
be in
"-
satisfactory opera
ting condition
whe
n delivered Should any
part
prove def ective
in
cr
matenal
or
workmanship Within
90
days
after
delivery
, replacement
of
same W
ill
be f
made
Without
charge
Adjustments Will be prOVided free
of
charge
for
the
warranty
period.
This
warranty
does
not Include
replace
ment
of
parts due
to
misus
e,
neglect and damage Should this
equipment
reqUire
serVice, contact
for
service Instr
uct
lons
::;
- the /
SPERRY
REMINGTON
OFFI
CE
SYSTEM
and
MACHINES,
or
Authonzed
Dealer
from
whom
you
purchased this
equipment.
Customer IS responSible
for Proof
of Purcha
se
Date
Save
inVOi
ce
or sal
es
slip
cpcp~~~~~~
';1
1
17
/ '