Page 1
HP-35
Page 2
HP's interest
in
computation
evolved as a na tural
extension
of
our tradition
al involvement in measure·
ment
problem
solving. At
an
early
date.
HP
recognized
the growing
need
for a family
of
computational
products
uniquely designed
for
ease of
interface
with
scientific
instrumentation.
In
1966
we
in t
roduced
the
fir st digital
minicompute
r
specifically designed 10
meet this
need.
Soon
after,
we
f
ollowed
up with
our fir
St
programmable calcu lator .
Fr
om
these
modest
beginni
ng<;.
HP
has
now
become
an
acknow
ledged leader in the field
of
co
mputational
problem
solving. Over
10,000
HP programmab
le cal·
culators
and
more
than 3000
HP
digital
compu
ters are
now
at
work
in
a wi
de ran
ge
of scientific. industrial,
and
educational appl i
cations.
Their effectiveness is
fu
rther
enh
anced
by
a
comple
te line of peripherals -
ranging fr
om
digital
tape
and
disc drives
to
card and
tape
readers, printers,
and
plotters.
Now we've
coupled
our
experience in scientific
pro
b-
lem solving
and computatiooal
technology
to
brin g
you
a
new
dimensio n in personal
computing
- -
the H
p·35
Pocket
Calculat
or.
HEWLETT
i PACKARD
Page 3
lUll
~
II
II
~
II
II
II
iii
iii
II
11
0
11
11
0.
• •
•
@
6
III
7
--..!L.J.
~
4
5
~
@
II
L!-
ei..;
..
Page 4
0
DISPLAY
~
POWER
ON-OF F
SWITCH
@
FUNCTION
KE
YS
0
CONT
ROL
KE
YS
0
MEMORY
KEYS
(i)
ENTRY
KEYS
f)
CLEAR KEYS
(i)
A
RITH
MET
IC KE YS
Page 5
HP-35
HEWLETT.PACKARD
10900
WOLFE
ROAD,
CUPERTINO,
CALIFORNIA,
95014
Page 6
FORE
WO
RD
To
g,~e
you
more
computing
power,
your
HP·35
works
in
a
consistent
and
natural way
that
may
be
slightlv differ·
ent from
pre~iou
s
calculators
you
have
operated.
So
even
if
you
are
an
eNd
hand
at
using calcuiatOfs,
you
will find
it
worthwhile
to
read this
little
book.
Beginners,
too.
will
find
the
step
bV
step
explanation
easy
to
follow.
Page 7
S
HIRT
POCKET
PO
WER
Our object
in
developing the Hp
·35
was
to gIve
you
a hi(fl
preciSIon
portable
electronic
slide rule. We
thou~""II
you'd
like
to
have
something
only
ficllonal
heroes
like James
Bond, Walter
MitIY
or
D,ck Tracy
are
supposed
to
own.
The HP·35 has far
more
com
puting
power
than
previous
pocket calculators. Its
ten
digit accuracy exceeds the
precIsion
to
which
most
of the phYsical
connants
of the
universe are known. It wil l handle
numbers
as small as
10-
99
and
up
to
10
99
.
Jnd
au
toma
tically places the
decimal
point for
you
. It
is
the first p
ocket
cal
culato
r to
provi
de YOU
with tran:;.cendental f
unctions
like logarithms
and sines
and
cosines .
The
operational
$lack
and
the
reverse "Pol i
sh·'
(Lukasiewicz)
notation
used
in
the HP.35
are the
most
efficient way
known
to
computer
:;.cience
for
evaluating m!lIhematical expressions.
The HP·35 was designed with
yOU,
the
user,
In
mind.
We
spent as much time
on
the
keyboa
rd layout.
on
the ch
Oice
of functions,
and
on
the styling as we did
on
the
electronics.
Page 8
The
speed
and
conveni ence with whi
ch you can arrive
at
a
Solution
to a problem
is
unparalleled . V
ou
will find
that
fewer mistakes
occur
when
computations
are easier
to
make . Y
ou
will also find yoursei f performing calculations
you
did nOt
do
bef ore. They fall
into
Thr
ee
categor
ies:
firsT,
Those
calculations
in
your
own field
that
were
avoided in favor
ot
an
educated
guess. The ability
to
perlorm
complex
calculations
whereV(!r you
are and
what
-
ever
me
situation
will
enhance
your
prolessional staTure.
The
second
category consists of calculations indirectly
related
to
your
profession -
computing
the
return
on
an
inveslment, reconciling
your
bank
account,
pursuing
your
hobby
with professional precision,
etc.
The last categOfY
contains
thO$!!
expioratOfY calculations t
hat
you
do
for
lun.
They
arise
when
someone
asks
"Old
you
know
...
?".
For
example,
did
you
know
thai one cubic
mile of air weighs
more
than 5 million tons?
Did
you
know
that
a man
running
a 4--minute mile
turns
100 yards in a
little
more
man
1
3.6
seconds?
Did
you
know
that
355
/ 1
13
is
an
excellent
approxi-
mation
to
n?
ii
Page 9
Why
not
check
and
see just
how
close
356/113
does
approximate
11?
Although
the
rest
01
this
manual must
be
read,
JUSt
between
the
IWO
of us,
you
can't
hurt
Ihe
calculator
by sliding
the
power
switch
to
ON
and
pressing
a lew keys,
To
check
the
appr
oxima
tion, key
in
355,
then
press
IDJiiIl
and
key in
the
denominator,
113, N<m press
a
to
gel Ihe
quolienl,
Theapproximation
is
n<min
the
display, Let
us
now
subtract
the
Irue value
of
11
!to
len
significant digits)
from
the
appr
oximatio
n.
Press @
and
11:1
It's
closer
than
one
would
think
12.66 x
10-7).
To
f,nd
the
percent
error,
divide
thos
difference
bv
11
and
mu ltiplv by 100.
(@'
1:1
' 100, f3 ), We n
ow know
tha
t 355/113
approximates
71'
to within
8.47 millionths
of
one
percent,
!It
makes
22n
look
pretty
5a(U T
wo
final
comments:
<D
it
's
easy
to remember the
approximation
Deca
use it
,s
made
by
dupic
ating
the first three
odd
numbers
and
insert,ng a
div'sion
si!1l
in
the
middle:
113}355;
®
you
have
just
evaluated
the
expression
1355/1 13 -
7l'l
X
1100/71').
Congratulation
sl
By
the
way,
switch
the
calculator
off
and
put
,t
iNlay,
(You
are
nOt
supposed
10
know
how
to
work
il
, , .
vet).
iii
Page 10
TABLE OF
CONTEN TS
SECTION
1
I
NSTANT AR
ITHM
ETIC
SERIAL
CALCULA
TI
ONS
3
SUMS
OF
PRODUCTS
4
PRODUCTS
OF
SUMS
5
THE
OPERATIONAL
STACK
6
SOME
SIMPLE
PROBLEMS
8
POWERS
OF
NUMBERS
9
PROBLEMS
IN FINANCE
"
BIG
AND
LITTLE
NUMBERS
"
NEGATIVE
NUMBERS
"
MORE
MEMOR
Y
"
REARRANGING
THE
STACK
'6
LOGARITHMS
AND
TRIGONOMETRY
"
SECTlON
2
OPERATING
LIMITS
"
ACCURACV
"
OVERFLOW
&
UNDERFLOW
22
SC
IEN
TIF IC
NOTATION
22
IMPROPER
CALCULATIONS
22
TEMPEnATUnC
RANGES
23
BATTERY
OPERATION
23
RECH
ARGING I A.C.
OPERATION
24
BATTERY
PACK
REPLACEMENT
26
ACCESSORIES
27
S
TANDARD
27
OPTIONAL
27
SERVICING
28
LOW POWE
R
28
BLANK
DISPLAV
28
WARRANTY
28
IN
WARRAN
TV 28
O
UT
OF
WARRANTV
29
SHIPPING INSTRUCTIONS
29
SEC
TIO
N 3
SAM
PLE
PROB
LE
MS
30
SOLUT
IO
NS
32
AN ALGORITH
M
34
Page 11
Hewlett-Packard
ships
your
HP-
35
lully·assembled,
with
banery
pack
10
place,
and
ready
10
operale.
W"h
the
battery
charger
disconnected,
slide
the
power
SWItch
to
ON.
You
should
see a
~ero
and a decimal
point
dIsplayed.
If any Other
indication
is
present,
~ee
SERVIC lNG, page 28.
Page 12
seC TION 1
I
NSTANT AR
ITHM
ETI
C
In
the HP-35,
arithmetic
aIlswers appear immediately
after pressing a
G ,
1:1
,
E3
or
G key.
As
in
on ndding
machine,
where
the a key
ad
ds the last
entry
to
what.
ever
is
alrendy in the machine, and the
1:1
key
subtracts
this
la'St
entry,
so
also, in the HP·
35,
the
13
key multi.
plu~s
what's
in the
machine
by
the
last
entry
and
the G
key dIvides
by
the
lasl
entry.
BUI
at the
start
we've got
to
gel the li($t
number
into
the
machine.
To
do
this
you
key in Ihe first
number
and
press
Now key
in
the
ne xt
number and
then
press
Try these
examples.
It
is
no t necessary to clear th e
machine
between
problems,
but
if
you
make
an
entry
mistake, press m jCL
EAR
XI
and
enter
the
number
correctly.
Toocld3to12
To
subtract
3 from
"
Press
'"
Press
'"
OJ
1.
OJ
lID
12
.
lID
12
.
am
12
.
am
12
.
@)
3.
@)
3.
II
15
.
iii
9 .
1
Page 13
2
To
multiply 3 times 12
To
d,v,de 3 irllO 12
Press
s..
Prcss
""
CD
CD
lID
"
lID
" .
EliIl
" .
EliIl
"
III
3
III
3.
EI
36.
1:1
,
Notice
that
In
thc
four
examples:
•
BOlh
numbers
!operands) are in
the
machine
before
you
press D,
1:1
,
EI
or
=
• Pressing
the
D ' = '
EI
or
= key causes
the
addll;on,
subtraction,
mUltiplicatIon
or
division
10
oc.:::ur
immediately
and
the result
to
be
d,splayed.
The
EliD
key repeats the
numbcr
displayed to a
socond inlernal register
1a
ploce Ihat holds
numbers!.
The
dIsPlay blinks
to
show
you
Ihis has
happcncd.
When
you
now Cnter a new
number,
the Hp·35
automa
tically clears
the display
01
the
old
one.
But
if
you
wanled
10
double
the old
number,
you
don't
need
to
enter
it again,
just
press D
after
the !mIlD Or,
if
you
wanted
10
square It, Just press
EI
.
Try
these examples.
To
double
3
Tosquorc
3
Press
s."
Press
s."
III
3
III
3
EliIl
3
EliIl
3
D
6
EI
9
Page 14
SECTION
1
SERIAL
CALCULAT
ION
Whenever a
new
number
is
enlered
aher
any
calculallOn.
the
Hp·35
performs
an
automat
ic
immJ
before
iIC-
ceptlng the
new
number.
This
means
thut
the
previous
answer
und
Ihe
new
ent
ry
are
both
in
posilion
for
the
next
arithmetic
o!X]ration
.
Find
the sum
of the
first
five
odd
numbers
Press
""
(jJ
EDl
1.
@
3.
II
4.
lID
5 .
II
9.
II)
7
II
16
.
lID
9
II
75
.
Find
the
product
of
the
first
five even
numbers
Pr
ess
""
®
,
EDl
,
[4]
,.
£I
8.
lID
6 .
£I
".
lID
8
£I
3"
(jJ1Q)
, 0
£I
3840
If
you
~re
calculat
ing ((2 I 3
)14 + 5)
,6
by Ilarld.
you
wo
uld
fir
st
add 2 and
3.
then divide the
sum
by
4.
add
5
to
th
e
quotient
and
finally
mu
ltiply by
6.
This
is
exocTly
whaT
you
do
on
the
HP-35:
3
Page 15
((2 +
3)/4
+ 5) -6
Pre
55
S
oo
Comments
III
2.
I!mIl
2.
@]
3.
a
5.
Add
2 and 3
(!)
••
CiI
, .
25
Div,de
~he
sum
by
<1
lID
5.
a
6.
25
Add 5 to
the
quotient
lID
6.
EI
37
. 5
Multiply
by
6
SU
MS
OF PRODU CTS
Suppose
you
sold
12
,tems
at
$1
.58
each.
8
'tems
at
52.67
each
and
16 '
tems
at SO.54 each. Tl,,,
lul<ol
,.,
price
'S
(12 x 1
.58)
+ (8 x 2.671
~
(16 x 0.541
Your
HP·
35
lets
you find the answer
without
writing
down or
storing
intermedia
te
results.
Press
Soo
Comments
"
" .
I!mIl
" .
1.
58
L
58
EI
" .
96
(12 x 1.581
•
••
I!mIl
••
2.67
2.
67
EI
"
36
(8 x 2.671
4
Page 16
SECTION
I
a
40.
32
(12 x 1.58) i
(S
x 2.67)
16
16.
IlmIl
16
.
. 54
54
£I
8.
64
(16 x 0.54)
a
48.
96
Total Sale Price
Obvious l
y,
you
can f i
nd
the
sum
of
any
number
of
products
thIs
way.
PRODUCT
OF
SU
MS
Problems
like
(7+3)'(5+11),(13+17)
are
done
juS!
like
sums
of
prcdUCI$
with
all
the
13
and
D
key
strokes
interchanged.
Press
500
CommenlS
7
7.
-
7.
3
3.
a
10
. n +3)
5
5.
IlmIl
5.
11
11
.
a
16.
(5+111
£I
160.
(7+3)
(SHU
13
13
.
IlmIl
13
.
17
17
.
a
30.
(
13+17)
£I
4800.
(7+3)' (5+11) '
03+
17)
5
Page 17
6
THE
OPERATIONAL
STACK
To
do
the last
examples
your
HP-35 had
to
save
some
answers for
future
use.
Let's
see
how
it
does this.
There
are four
number
registers in
the
HP-35, which we call the
X,
Y, Z
and
T regIsters.
They
are arranged in
what
is
called a
"stock", X on
the
bottom
and
T
on
the
top.
The
display always shows the
number
in
the
X register.
OPERATIONAL
STACK
,
y
x
___
T Register
___
Z Re
gister
___
Y RegIs
ter
X Re
gister
NOTE
The x Register
is
~Iw~y~
rli~nl~Yflrl
To
avoid
confusion
be-
tween the
name
of a
register
and
the
number
in it, we designate the
register
by
a capital
lener
and the
number
by
italics. Thus, X, y, Z
and
I are the
contents
n/X,Y,7~"dT
When
you
key in
11
number, it
goos
into
the X register,
Which
is
the
only
one
displayed. When
you
press
IlDEiD
,this
number is
repeated
into
the Y registe
r.
At
the same time, the
y
is
moved
up
to
Z arxl z is moved
up
to
T like this:
When
you
press a ,
Xisadded
toy,
and
the
whole
stack
drops
to
d,splay the answer
In
X.
The
same
Ihinghappeos
for = '
EI
and
G Whenell(!r
the
stack
drops,
I is
duplicated into T and
Z,
and Z drops
10
Y.
1
Page 18
S
ECTION
1
T
D
,
z
1:1
Y
IY-I-X l
y-X
~
~
Y
13
X
Y><X
yl
x
X
1:1
Let us
look
at Ihe
conlent$
01
the stack
as
we do (3 x 4 )
-I-
(5 x
6).
The
keys used are shCMfi above the
circl
ed steps
CD
through
®.
Oireetly
above
the
keys
you see
Ihe
in
for
mation
'"
the
X, Y, Z and T registers
after
the key
str
oke.
(3 " 4)
-1-
(5 x 6)
T
Z
"
Y
3 3
"
5
X
3.
3.
,
".
5. 5.
K
EY
I1l
D
0
13
lID
D
!>TE
P
<D
@
@@
® ®
STEP
CD
3 in
di
splay
IX
Register)
STEP ® 3 d
uplicat
ed
into
Y Register
STE P
@ 4
in display
STEP
@)
Product (12) formed
in
Y,
then
drops ,nto
X.
"
5
"
6.
30.
".
@l
13
D
0®
@
STEP ® AUl
omatic
~
pushes 12 into
Y,
dis-
dIsplay shows
5.
STEP ®
~
pushes y
inl0
Z,
X
inlO
Y,
and leaves x unchanged,
STEP
CV
6,"
di
splay
S
TEP
® Pr
oduci
(30)
formed
in
Y,
then
Z and
y
drop
to
Y and X
STEP
®
Sum (421
formed
in
Y then d rops
into
X.
7
Page 19
8
SOME SIM
PLE
PROBLEM S
Calculations
that
involve
only
one
number
are easier than
the
problems
you've
already
done.
You
iust
key
the
number
(x)
inlo
the
HP-35
and press
the
key
that
does
what
you
want
done.
Let's
try
some eKamples:
(a) Square
Root
of
49
Press
"'"
0
,.
lID
".
fiil
7.
(b)
Re.::lprocal
0125
Press
"'"
lID
2.
lID
25
.
m.1
"
The x on the
rill
and m
key
means the answer
will
be
the
square
root
or
reciprocal
01
X,
that
is,
of
the
contents
of
the
dlsplaylXl X regIster.
Th
is can be
the
answer
from a previous
calculation.
Ie)
Hypotenuse
of
a right
triang
le of sides 3,
4.
We
wish
10
compute
,13
2
-t
4
2
Press
"'"
3.
3.
9.
,.
,.
"
25.
,
Page 20
SECTION
(d)
Find Ihe
area
of
a elrcle
with
a 3
foot
radius, i.e ..
A "
JTR2
w!lh R 3 fet't.
Press
"'"
@
3
I£iiliIl
3.
EI
9 .
~
3.
1 4
15926
5 4
EI
28.
27433
389
P
OW
ERS O F NUM
BERS
We
have
al
readv
set'n
how
to
square a number
and
to
take
ilS
reciprocal,
Ihatls,
how
to
lind
Xl
and
X-
I.
The
I'll
key leiS
you
Imd
any
power
of
a posilillC
number.
Sup-
pose
you
wont
to
lind
2xZxZx2x2x2x2
27. In
most
calculators
you·d
have
10
do
all six
multiplications.
Here·s
how
YOU
do
it
with
Ihe HP-
35:
Press
S"
Comments
0
7
Enter
the
power.
y.
I£iiliIl
7
Put It
in
Y
lID
2
Enter
the
number,
X.
l'DI
"8
Take
27
The
power
(y)
does
nOt have to
be a whole
number:
It
can
be any
number.
The
HP-35
performs
XY
wllh
an
mternal
program using
logarithms
and
the
answers
are
nOI
always
exael
to
Ihe
last
decimal
place (sec Accuracy page 21).
For
e ~
ample,
81/
J
-
4.
but"
you
key
(ID
!mE
@
G
rnJ
III
you
get 3
999999999
Call It
4;
the
error
is .000000001,
or
only
one bli
lionthl
9
Page 21
10
PROBLEMS IN
FI
NANCE
If
YOU
deposiUlI:I
one
dollar
a~
5%
in~eres~
compounded
annually.
how
much
would
you
have
a~
the
end
of 17
years?
Value
~
(1
+
Aa~el
Years
Press
Comments
17
Number
of
years
IIIIDJ
1 7 .
1.05
05
1 + inlerest rate
III
2.29
2
0183
1 9
Amoun
lafrer17
yean;
($2.29)
In
1965 a company
had gross sales of
$926
million.
By
1972
the
sales
had
increased
to$I.37
Billion. What is
the
growth
rate
compounded annually?
Pross
1
972
EllII
1965
1:1
mil
1.
37
0
9
EllII
926
IDI
6
1:1
III
(
Final
sales
) I {yearS
1 +
Rale~
Initia l Sales
19
7
2.
1
972.
1
965.
t..:OmmCn
lS
7 Years
1428571429
RecIprocal of
period
I.
37
09
1.37
billion
1.
37
09
92
6 . 0 6
926
million
4 7 9 4 8 1
64
1
1.05
7
55
11
18
Annual growth
rate - 5.755111
8%
Page 22
~
~
T
Z
V
Find the
monthly
payment on a
30
year 1360
payment),
$30,000
loan havtng
an
annual interest of 6%
L005/month).
Monthly
Payment
=
Principal x Monthly Interest Rate
1 - [1
1(
1 + Monthly Interest
Rme)PaymentsJ
30,000 x .005
1 -
[1111.oo5)360J
>50
>50
150
>50
>50
150 150
>50 >50 >50
30000
30000
150
360
360
>50
150
>50
>50
X
30000.
30000,
.005
150.
1.
1.
360. 360. 1.005
6.0225
.16601 .83395
17986
]
KEY
30000
0
.005
£I
D
360
D 1.005
III
m
1:1
G
RESULT
•
•
0
j
0
z
Page 23
12
BIG AND
LITTLE
NUMBERS
Suppose
you
square
987654
by
pressing 98
7654
ImDiD
f3
.
The
result
you
set!
is
9.75460
4
237
11
This is
the
way
the
Hp·35
displays
numbers
Ibove
ten
billion.
The
number
is read
as
9.75460<1237 x
101 I.
This
way
of
writing
numbers
is
known
as
"scien
tific
notation".
Don't
let it scare
you:
the
11 means "move
the
dedmal
po
int
11 places
to
the
right " like this:
975,460,423,700.
t
....................
.1
Now
press
lEI
.
You
wi II see
1
.025
1
569
1 6 -
12
The
-12
tells y
ou
to
mo
ve the decimal p
oint
12
places
to
the
left.
.
000
00000000\025156916
1..
.............••....
Numbers
larger
than
10
10
or
s!TI(Ilier than
10
-
2
are
auto-
matically
dIsplayed
in scientific
notation.
You
can
enter
numbers
in $Cientific
notation
by
using
the
B !E
NTER
EXPONENT) key.
Toenter
15.6
tril-
lion
05.6 x lOt 2):
Press
s..
rn
1-
@
" .
8
" .
Page 24
•
•
,
SECTION
1
lID
15
. 6
lEI
15
.
6
00
IIJ
15.
6
01
~
" .
6
12
You
can
save
t,me
when
entering
exoct
powers
of ten
simply by preSSing
IIJ3
and
then
the
desired
power
01
ten. Before
doing
an
example, press
BIl
to
terminate
the previous
example.
Now,
to
enter
one million
(10
6
):
Press
g."
00
06
To
enter
negative
powers
of
ten,
pre~s
a (Change Sign)
after pressing
B
and
either before
or
after
keying in
tho
powor
o f Ion
To
en,Or
,he
rna",
of
"n
"I"ctro
n,
which
is 9.1
09
x
10-~1
kilograms, first press _ to
terminate
th
e previous
e ~amp
le,
then:
Pr
ess
g."
~
••
[J
•
IIJ
•
lID
•
"
lID
• •
".
ID
•
".
00
I!I:Il
• •
".
-
00
@
••
" .
-
03
IIJ
••
'd
•
-"
13
Page 25
14
NEGATI VE NUMBERS
The
_ key d
oes
mOl'e
than
enter
M9'ltive
powers
of
len. In
fact,
its
primary
uses
are
for
entering
ne9'l tive
numbers and changing the si!J)
of a computed
result.
Ex
am
ple: In
computIng
Ihe
product
(-31(-
4)(-51(-6
1-
you
WIll
see
that
the
m:e
can be used
e,ther
belore
or
after
the
number.
Since
you
dIdn't
use the
number
from
the
previous
example,
press
6!l
to
get
rid
01 it.
Press
"'"
a
- 0
@J
- 3
ImIliIl
- 3
IilIl
3.
GJ
- 4 .
£I
12
.
@
5
a
- 5
£I
- 6 0
lID
6
a
- 6
£I
36O,
TRA I LING ZEROS
Comments
a used
before
3
a used before 4
(-31(-41
'" 12
a used
after
5
(-3)(-4)(-51
"
-60
a used
after
6
(-31(-4)(-511-6) K 360
Trailing
zeros
10
the
right
of
the
decimal
point
are
blanked
QUI,
automaticall
y.
Page 26
I
I
1
t
S
ECTION
1
MORE
MEMORY
Your HP·35 has an additional
memory
register for storing
constants. It
is
not
affected
by
computations.
HowC'/er, a
keyboard
entry
or
IiBJ
immediately
following
mEl
does
not
raise the stack .
EMampl
e:
To
find
what
percentage each
01
the
lirst
li~
odd
numbers
i5
01
their
total,
lirst
add
1,
3, 5.
7
and
9, then press
om
(STORE)
to
store
th
e s
um
(25) in
memory.
The
individual
entries
may n
ow
be
divided
by
the
stored
nurrber
si
......
ply
by
pressing
IiBJ
(R ECALL.)
and
then
GI
:
Press
1m
(jJ
1m
a
I1J
G!!I!
a
lID
1m
a
m
G!!I!
a
lID
G!!I!
a
""
25
.
25
.
1 .
25
.
"
3 .
25
.
12
5 .
25.
2
7 .
25.
28
9.
25.
36
Comments
(Key in
25
if
not
already
the re)
ST
ORE
sum
in
memory
Fi
rst
number
RECAL
L.
sum
4% of
tota
l
1
2%
of
tota
l
20% of total
28% of total
36
% of
wtal
15
Page 27
16
REARRANGING
TH
E ST
ACK
The m (ROLL OOWNI key let$
you
reI/lew
the
Slack
contents
Without losing
data.
II
IS
also used to reposi tion
data Wit
hin
the slack.
Here is
what
happens
each lime
you
press m
t
~/T
Z -.......j"'-- Z
Y
--'('--
y
x
./
'---
X
Exa mple:
Load
the
sta
ck by pressing
GJ
EiD
(gJ
amn
(ID
EiD
m·
(The
Slock
now
contains
X=4,
1'''3, Z-2,
and
t~l
L
To
rel/iew
the
COntents
of
the
stack
pressm
four
times.
The
fourth
m
returns
the
stack
to
its
anginal
position
(X"'4,
y~3,
Z
-2
and
t- l l.
NOTE: Pressing m
aft
er e
ntering
a series
of
digits
to
form
a
number
terminates
the
compositio
n
ur
tt", numb
er (i.
e., no at$dltlonul digits can
be a
ppendedl
NOTE:
The
stack
is
raised and t
is loU when a ke
yboa
rd
entry
or
a follows m .
You will
often
f.nd
that X and y should
be
exchanged
before
a a , G
or
III
opera
tion.
The
f:Bl key
exchanges.
X
and y as
shown
beiON.
T
z
--
- z
y~.----y
X---------'--- X
Example: Find
{/S
12
Press
s
..
5 1 2
512
Co
mm
er"lt
Page 28
•
SECTION
1
ImmIl
512.
([J
9.
I!'lI
.1111111111
xandyare
in
wrong
order
EB2
512.
xandyareinr
i
ghtorder
III
,
LOGAR
ITH
MS
AND TRIGONOMETRY
You
use the
logarithmic
and
trigonometrIC
functions
the
same
way
you
use
(iii
and
lEI
: the
number
in
Xis
replaced
by
the
functIon
requested
like
this:
__
_ T
;
===
=~
x
-f(X)-
X
where f(XI
IS
.Jx.
l
/X.log
X.
InX
.ore
X
fDI
mI
mm
m
IlII
In the
case
of
tri
gono
metric
functions.
Zreplaces
t.
(The
T
register
is
used
when
comput
ing trigOrlometric
funct
iorls.l
_____ ~ 1
LOST)
t
---'
____
T .
Z
~
Z where
f(X)
IS
sin
X.
y
___
_ y cos X.
I1In
X.
arc sin
X.
arc cos
X.
or
arc \an X.
X
-HX)
- - X
Your
HP·35
computes
both
natural
logarithms
1
loge)
and
common
logarithms
( 1m is log
10)'
IiIIiJ
1m
IEIlI
m
II1II
is
Natural
arltilogarithms.
anlliog
e
X ·
ex'
are
formed
with
the m
key:common
antilogarithms.
antilog
. 0 X
..
10'-;
are
formed
wIth
the
m
key.
Example:
To
find
antilog
10
2.
press
(II
aml
ill@
III
wread
100.
17
Page 29
18
Although logarithms were originally ured
to
speed multi-
plication
and
division,
they
have partIcular significance
in
scientific
and
engineering problems.
There
is.
for example,
a logarithmIc relatIonshIp belwtlen alti
tude
and
barometric
pressure.
Suppose
you
wish
10
use
an
ordinary
barometer
as
an
alIi meIer.
Afler
measuring
the
sea level pressure
(30 inches of mercury) you
climb
unlil Ihe
barometer
in-
dicates
9.4 inches of
mercury.
How
hIgh are
you?
Allhough
Ihe
e~act
relatIonship of pressure
and
altitude
IS
a function
01
many
lactor'$, a reas
onab
le
appro~imalion
is
given by:
Press
25000
IlmIl
30
IlmIl
9.4
;;
l1li
£I
30
Altllude
(teet)
•
25,000
In
--Pressure
""
Comments
2500
0 .
25000.
30
.
30
9
4
Pr
essure at altitude
3.
1 9 1 4
89362
1
60
4
87693
290
12
19233
Altitude
[We
SUSpe.c1
thaI
you
may
be
on
Mt. Everesl (29.028 feet))
Your
Hp·35
compules
trigonometric f
unctions
of angles
measured
on
degrees
and
decimal fractions
of
a degree .
E~
ample!
Find sin
30.5
°,
cos
150", Ian _25. 6°.
Press So,
Comments
30.5
30
. 5
5075383628
sm
30
.5
o
Page 30
SECTION
1
•
so
150
.
86602
54041
~
866025
4041
25.6 -
25.6
4791197214
o
COS
150
Ian
-25.6
o
Inverse ,rigO<1omet,ic
funct
ions are
compuWd
by proced·
ing
the
desired
Irigonornenic
keys
with
the
m key .
Answers are
returned
in decimal degrees.
e
ll
ample:
F,nd
arc Sin
.3,
arccos
-.7,
arc Ian
10.2
Press
s., Comments
[)
~
3
ElIiI
3
Im1
"
45760312
ARC
son
.3
Dl
- 1
7.
45760312
[)
II)
7
ElIiI
7
1m
134.
4
27004
ARC
cos - .7
10.2
• o. 2
ElIiI
• o. 2
1m
84
.
40066068
ARC Ian 10.2
19
Page 31
20
Many
times
it
is
neceSSiJry
to
l'onvert
data
to
a
form
oceeplable
10
a
given
algorithm
as
in
Ihe following
example
:
Exampl
e:
Conyert 35°
17'
47"
to
decimal
degrees.
Press
S~
Comment
13 [5
35.
Degrees
!!mill
35
[')[7J
17
Minutes
!!mill
17
4 7
47
Seconds
!!mill
47
6 a
60
Computation
constant
IiliiI
60.
=
7833333333
D
17
78333333
1m
60
=
2963888888
D
35.29638889
Decimal
degrees
You
now know all
of
the basi
l'
lacts
about
operaungyour
HP·35
. Howeyer
you
may lind
the
flow
chan
on
page
34
Interestmg.
It
deSCribes a
procedure
Inn
nlgorothm)
that
will
nllow
vou
to
evaluate
any
cxprcssion
on a calculator
li
ke
VOl"
HP
·35,
that
uses
an operat
ional
stock and
Luka·
Sl
eWICZ
nOlall0n.
Page 32
SECTION
2
OPERATING LIMITS
ACCURACY
The accuracy
of
the
HP-35
depends
on
the
operatIon
being
performed.
Elementary
operations
such
as
add, sub·
tract,
multiply,
divide,
reciprocal.
and
square
root
have a
ma~imum
error
of ± one
count
m
the
tenth
(least
signifi·
ca
ll)
d
igit.
Errol'S
in
these
operations
are caused
by
r
ounding
answel'S
to
the
tenth
(least sig"l'ficant)
digit.
An
e ~
ample
of
round
off
error
is
seen wh
en
evaluating
(Vs)2.
Rounding
V5
to
10 signi f
icant
digits
gives
2.236067977.
Squaring this
number
gives
the
19
digit
pr
oduct
4.999999997764872529.
Round
ing the square to
10 dIgIts gi
ves
4.999999998.
If the
ne~t
larger
appro~i
m
~tlon
(2.2360671378)
i~ ~quorod,
the .coul
t'
o
5.
000000002237008484.
Rou
nding
this
numbe
r to
10
significant digits gIves
5.0
00000002.
There
simply
is no
ten dIgit
number
whose square is
5.000000000.
The accuracy 01 the
remaining
operations
(trigonometric,
logarithmic
and
exponential)
depends
upon
the
argument.
T
he
answer
that
is
displayed
will
be the
correct
value
for
an
input
argument
with
in
iN
counts
in
the
tenth
least
si!Jliticant
digit of
the
origmal
input
argument.
Values lor N are:
OP
ERA
TION
VALUE
OF
N
10gX.lnX,ande
X
2
trigonometric
3
x
y
4 for
X.and
7
fory
21
Page 33
22
Logarit
hmic
operations
have
an
additiona
l l
imitation
of
1:3
in
the
10th
decimal
!leasl
significant)
digit
in the
displayed answer.
Trigonomet"c
operations
have
an
additional
occurocy
limitation
of
±1
>< 10-9 on
the
displayed
answer.
E><ampl
e:
Your
Hp·35
shows that
In
5 -
1.6094379
12.
The ac<:urocy
statement
sayS
that
1.609437
9 12
IS
the
rl3lural
logarithm
01
a
number
between
4.999999998
and
5.000000002.
OV
ERFL
OW
AND UN
DERFLO
W
Any
COmput811on
or
data
entry
resuillng
in
a IT\iIgnitude
equal
10
or
greater
IhM
10
100
causes
9.999999999
99
to be
displayed.
Computations
or
data
entries
having
a
IT\iIgniwde less t
han
10-
99
are
displayed
as
zero.
SCIENT
IFIC NOTATIO
N
Answers greater than
10
10
and smaller
than 10
-2 Jrc
dis played
in sCi
ent
ific
notation.
I
MPROPER
CALCULATIONS
If
you
attempt
an
Improper
Calculation such
as
diVision
by
zerO, a blonkong zero appears.
To
reset, press
t!13 . The
fQllowong
aperallons
afe
Improper
.
• DiVISIon
by
;rero
• Square
root
01
a nega\lve
number
•
In
,,',
log
Xor
XY,
where
X ""O
• arc
son
Xor
arc cos X,
where
Ix!
> 1
Page 34
SECTION
2
CAUTIO
N
Calculator call
be
damaged
by
stalic
charge.
TEMPERATURE
RANGES
OPERATING
CHARGING:
STORAGE
:
0"
10 +
40oC
o 0
+
10
10
+40
C
o 0
-
40
10
+55
C
BATTERY
OPERATION
(32°F
to
lQ4
oF)
(50°F
to
lQ4°FI
(_40° F
to
131 ° F)
The
bau
ery
provides
three
to
five
hours
of
con\lnuous
operation.
By
turning
off
the
power
when
Ihe
calculator
i5
nOt in
Immediate
use,
Ihe
HP-
35
oottery
power
wi
ll
easily
lasT
throughout a normal
workingdav.
All
decimal
points
bul
one
lig
ht
in
the
display
when
2105
mi
nutes
01
oporation
time
remain
in
the
battery
pack
.
Even
when the
extra
decimal
points
are
turned
on, the
true
decimal
position
is
known
becau,e
an
entire
digit
position
is
allocated
to
Ihe
true
decimal
position
.
Exampl e:
Operating
Ihe
calCul
ator
for
more
Ihan
2
to
5
minutes
aher
this
low
power
indicat,on
first
occurs
may
result
in
wrong
answcrs.
The
battery
pack
must
be
recharged
by
cQlmectingthe
Hp
·35
10
the
battery
charger.
23
Page 35
24
NOTE
The
HP-35 s
hould
be
turned off
befor
e pluggin9
in
the
charger.
It can
be
turned
on
&!la
in a
lter
the
charger is
plugged in
to the power
out
let.
The calculator c
an
be
used during the char9in9 cycle. The
Hp·35 can
be
operated
continuously
from
the
ac line if
desired.
There
is
no
danger of
o~rcharging
the
battery.
RECHARGI
NG
AND AC LINE OPERATI
ON
CA
m'
ION
1'0
prevent damage, the position
of Ihe line
vol/age
select switch
011
II
IC
ba
t/c
ry charge
r
must
be
set
fo IIw proper line
vol/age
.
1, Make sure
that
the
power
switch is 0
FF.
2, Insert
battery
charger plug
into
the
rear conn
ecto
r of
the
HP-35
and
connect
power
plug to
power
outlet
.
NOTE: Either
connection
may
be
made
first.
3.
Slide the
power
switch
to
ON
and
observe
tha
t a zero
and
a decimal
point
are displayed .
IMPO
RTANT
The HP-35 w
ill
not
operate when connected
to
the recharger unle
ss
the recharger is con-
nected
to
a live
power
outlet
,
5. Slide
power
switch
to
OFF
if
you
don't
want
to
use
the
calculator
while it
is
charging.
Page 36
SECTIO
N 2
N
OTE
Alter 14
hours, a complelCly
discharged
battery
will
be
fully
charged.
Shoner
charge periods will allow
reduced
battery
OPerating
lime.
There
is
no
danger
01
owrcharge.
f
or
convenience,
ovcrnig,t charging is re.:::ommended.
6.
AI
end
01 th e
charg
ing period. you may
continue
using
y
our
HP·35 wilh
ac
power
or
proceed
to
ne
xt
step
lor
dc
power
operation
.
1. With
the
power
switch
at
OFF
,
disconnect
battery
charger
Irom
PCNVer
receptacle.
8.
Disconnect
balle
ry
charger
from HP.35.
NO
TE
Temporary
degradation,
peculiar
to
nickel·cadmium
bat
·
teries.
may
cause a decrease
in the
operating
period of
the
baHery
pack.
Should
this
happen turn
the HP·
35
on
for
at
least five I
lours
to
co
mp
let ely di scllarge
tM
i.Jalterles.
Then
PUI
il
on
charge
fo r
~t
least 14 hours. This should
correct
the
temporary
degra
dat
ion.
If
the
bauery
pock
won't ha
d a
charge.
it
may
be
defective.
If
the
warrant
y is in eff()(:t.
return
the
pack
to
Hewlett·Packard ac<;ording
10
the
instruc
tions
on
page
29.
If
the
baHCt"y
pack is
OUI
01
warranty,
use
Ihe
accessory
order
card
in
the
back
cover
pocket
o f this mallual
10
order a Ilew
bal1ery.
NOT E
Use only the HP
rech~rge
nbl
e
Model
8200
1A
Battery
Pac
k which
has
been teSled
and
is warr an led
lor
one year.
You can u
se
yo
ur
Hp·35
011 ae
po
wer uillil Ihe replace -
men
t ban ery pac k arri
ws
.
25
Page 37
26
BA
TT
ERY
PACK
REPLACEMENT
1.
Turn
power
switCh
to
OFF
and
dIsconnect
the
battery
charger.
2.
Slide
the
two
baltery-<loor
latches
ithe
tOP
feet)
toyvard
midele
of
calcula
tor.
3.
Let
battery
door
and battery
pock
fall
into
palm
of
hand.
4.
See
if
the
battery
connector
$Prings
have
been
inad
·
vertently
flattened
inward
in
calculato
r.
If
so.
bend
them
outw
ard
and
try
the
battery
again.
5. Insert
the battery
pack
with
its
gold
contacts
facing
the
calculator
SO
that
contact
is
made
with
battery
COl1fl1lCtors.
6.
Inse
rt
the bottom
of
tho
battory
door
behind
,hg
retaining
groove
and
close
the
door.
7.
G<)ntly
press
the
battery
door
cl05ed
wh
ile
sliding
the
1'1110
batlcry-door
latChes
oulward.
NO
TE
If
you
use
your
Hp
·35
e:<len$ivc
ly
in field
work
or
during
t",vel,
you
may
waflt
to
order
the
Model
82004A
Ballery
Holder
and
Pack.
CAU
TIO
N
Do
lIo//ry
10
bum
old balleries.
They
may
explode!
Page 38
SECTION 2
ACCESSOR
IE
S
STANDARD
Your HP·35
comes
complcte
with the
loll~ing
accessories:
(To reorder.
see
the
Order
Card
In
the
back
cover
pocket
of this
manual.)
ACceSSORY
Battery Pack
Battery D'larger/AC
Adapter
Safety Travel Case
Soft
leather
Carrymg Case
Operating Manual
Four
personalized labels
MODEL/PART
NO.
82001A
82002A
82003A
8200SA
00035·90008
7120·2946
The
pe
rsonalized labels are provided
lor
your
con
·
venience. Type
your
name or
other
Identification
on
each
label
and
aff,x
to
calculotor,
battery
charger,
and
safety
travel case.
OPTIONAL
Othcr
lICcC$sorics
for
your
HP·35
arc specifi
ed
on the
Order Card in the back covcr
pocket
of th,s
manual.
We
will
send
you
new
Order
Cards as
add,tional
optional
accessories arc
added
10
our prodUClline.
The
82oo4A
Ballery Holdllr
and
Pack consists
of
a
charging
allachment
and
a spare
ballery
pack
so
thai
one
battery
pack
can
charge While
the
other
is
in use.
Oplional accessories include :
AcceSSORY
Battery Holder
and
Pack
$ecu"ty
Cradle
Hard Leather Field Case
MODEL/PART
NO.
82oo4A
82oo7A
82oo6A
27
•
Page 39
28
SERVICING
LO
W PO
WE
R
All
decimal
points
light
to
warn
you
that
you
have a few
minutes
of
OPerating
time
1<lIt.
You
mUSt then
eit
her:
•
operate
from
ac
powe
r
•
charge
the
battery
pack
• insert a fully
charged
bm
tery pack
BLANK DI
SP
LAY
A bl
ank
display
while
in
battery
operation
means
the:
•
battery
pack
IS
dIscharged
•
battery
pack
is nOt
making
COntact
•
calculator
is
defecuve
To iSOlate t
he diff
lcu
l1y
, try the fOl
lowing:
1.
Examin
e t
he
Bu
tte
ry
Pac k (see Replaceme
nt
pro
-
cox/
ure, PJge 26.f
If
displa y is stil
l blan k.
proc
eed
to
ne
xt
ste
p.
2. Ope r
ate your
HP
·35
from
ac line , page 24. If the
d
isplny
remains
bla
n k, the
HP
·35
is def
ecti
ve. Sl'e t
he
War
mn ty
section,
below.
W
ARRANTY
IN
WA
RR
ANT
Y
T
he
Hp·35
IS
warranled
agaonst defecTS in
mate
rials
and
workmanshIp
fo r
one
year f
rom
dale
of delivery. During
the
warranty
period
~
"",U repair
or
replace
components
thai prove
to
be
de
fective, prOVIded
they
are
returned 10
H
ewlett·Packard
bee
Shipping Instructions!'
No Other
warranty
is
expressed
or
implied.
We
are
not
liable for
consequential
damage.
Page 40
SECTIO
N 2
OUT
OF
WARRANTY
Beyond
the one
(1)
year
period
, y
our
calculalOr
will
be
repaired
for a current
fixed
price
of
$40.00
(U.S.
onl
y),
pl",s
applicable
State
and
Local Taxes.
Return
the HP-
35
along
with
all standard occessoroes
(see
Shipping
Instruc
-
tions)
If
only
the
battery
pock
i$
defeclive,
simply
order
a replacement (see
Order
Card
10
Ihe
back
cover pOcket
of
this
manual).
SH
IPPI
NG
INSTRUCTIONS
Malfunctions
t,oced to the
calculalOr
or
battery
charger
require that
you
return
10
us:
Your
HP·35
with
all
standard
a::cessories In Its saf
ety
travel
case
.
2. A
completed
Service Cnrd
(from
back
COlICr
pockc
t of
th
is
manual).
If
a ba
tt
ery
pac
k is
defective and
wit
hin warran
ty,
rel",rn
\0
us:
1.
only the defect I
ve
bauery pock
2. a
comp
leted ServIce Cnrd
(fro
m
back
cover
pocket
of
this
maflual)
Send
returned items
safe
ly
packaged
to
the address liSle<!
on
the
Service Card.
Call
the
applicable
service
phone
flumber
on
the Service
Card.
or
Advaflced
Products
Oivisiofl.
Customer
Service:
408-996-0100.
Uflder
florma l COfldltlon$,
your
calculator
will
be repai red
arod
reshipped
wlthu)
two
days
of
receipt
at
Ihls address.
29
Page 41
30
SAMPLE PROBLEMS
Use the
following
sample
problems
to
test
your
skIll
with
the
HP-35.
Aefer
to
Solutions,
page
32,
for
o;orr(!c1
answers and
preferred
methoos
of
calculations.
1.
(3)< 4
)+(5><6)+(7><8)
2.
(31
4l!5 + 6)(7
+ 8)
3.
4.
5.
(
4 "
5.
2.
) ( ,.
~
2+4
1
1/3
+ 1
/6
3'
,
'"
1
5"
1
, .-'-
292
6.
60
arc cos (cos 45° cos
150° ..
sin 45° sin
150
° cos 60° )
NOTE
13;
1T
)
The SOlutions
10
the
following
problems
do
not
require
multiple
entries
of
1he same
data:
Page 42
7.
a. R - S, 0 "
30
°.
Find
x. V
(x - R
cos
0;
v~xtanO)
b. x -
4.y
- 3.
FindR,O
s e CTION 3
(0
- arc t
an
(y/x);
R E y/sinO)
8.
Co
rWCrI the following
to
centim
eters:
,.
5'3"'
b. 37"'
,
24"'
d.
36""
9.
Compute
the
annual rate 01
return
(after taxes)
of
an
uwestment
held for 6·1/2 monthS
when
Tax Rate "
35
%
Buy Price -
$2341
sell
Pncc
•
$2672
RETUR N ·
ISE LL - BUY)(1 - TAX)
BUY
12 1
00
HO
LD
DURATION
x
31
Page 43
32
SOLUTIONS
1.
AOSWCf:
98.
@0 0
£1
1ID01ID
£I0
0 0
1ID
£l0
2.
A"~wer:
1155.
@0 0 0
1ID01ID
O£l 0 0
1ID
0£l
3.
Answer: 26.9064 1
536
0 0
1ID£l0 0
0lID
O @0
ITlGH~
0
ITllID
O 0 0 0 0
D
ITl@
0 0 0 0
DO£l
4.
Answer 2.
5.
Answer: 3. 14 15
926
53
o
lID
o
lEI
ITl
O
IEI
ITl
lID
0
lEI
0 0
lEI
@ 0
6.
An
swer:
6949.392
474
o
lID
IiSiI
ITl
lID
lID
IiSiI
£I
0
lID
mm
ITl
lID lID
mm
£I
lID
lID
IiSiI
£I
0
ma
IiSiI
lID lID
£I
Page 44
SECTION
3
7.
iI.
An
swer
s:
X~
4.330
1270 2
y
~
2.5
@
(Q)
D 1m
f.'IiIl
mI
@
EI
EI
-valueo
IY~2.5
'-
va
lue
of)(
" 4 .33012702
b. Answers:
0
~
36.8698976
4
R .. 5.00
000000
3
@ D D
GJ
CH
illi
11m!
am
=-value 01 R z 5 .
000000003
\ value of 0 -
36.8698976
4
8.
a. Answer:
160.02
® 8
lID
GJ
IiIIlI
lID
D
[])
®
EI
@ D
Il!3J
EI
b. Answer:
93.98
c.
Answer: 60
.96
d. Answer:
91.44.
9.
AnsVYCr: 16.967100
08
I1J
lID
IT)
I1J
D
I1J
@
GJ
[]) IiIIlI =
[])
D 8
@I
lID
=
EI
Il!3J
D []) ®
EI
lID
8
IID
ClI
[])(Q)(Q)
EI
33
Page 45
34
AN A LGOR
ITH
M
The
flow charI
shown
below allows
you
10 evaluate any
e~pression
on
a calculator. like
your
HP·35,
Ihat
u<;es
an
operatIona l stack
and
LukasiewIcz
notation.
AlthoultJ
the
general
solution
requIres
an
operational
stack
of
un·
limitoo length,
the
lour
regIster stack in your HP-35
IS
adequate
lor
most practical problems. Belore using
the
al90rithm, Wfite your expression in serial
lorm
i.e ..
write
it as if it were to
be
sent over
the
teletype.
All expressions
can
be
Wfinen in serial l
orm. For
e",~mple
:
•
2
3 +
1/2
beco
mes
2/13
+ 1/2).
nUT
U"'OU
.(R.O"M
.... " TWO
•
/
...
,
~
..
* Y
ou
may omI t
this
step
if
you've
done
any operatio
n
on
the
last
num
ber ent
erOO
.
• One
numbe
r (Monadic)
ope
rations are thin
gs
like
fiiJ m
.etc
.
..
Two
number
(Diadic)
operall
ons
are things like D
CI
£I
1::1
Page 46
•
SECTIO
N 3
Use
the
algOri
Ihm
to
solve
(3+
4)
[log(25~)+61
According
to
our
algorithm,
the
solution
can
be
obtained
for
any
expressioo
by
entering
the
numbers
in
the
orde
r
in
which
they occur, i.e., 3,
4,
25,
7. 9 and
6.
Press
Flowchart
80'
@
3.
®
IIEIJ
3.
@
0
,
®
IJ
7.
©
IIEIJ '
7.
@
~IID
25
.
®
IIEIJ
25
.
@
III
7.
®
IIEIJ
7.
@
lID
9.
®
IJ
16
.
©
fiiI
,.
®
13
100.
©
IS1I
2
®
IIEIJ
2.
@
lID
6
®
IJ
8.
©
13
56
.
©
•
You
may
omil
these steps because
your
Hp·35 performs
an
automatic
ImIDJ
lor you.
35
Page 47
36
Although
the
IlIgo<ithm will
alwnys
work,
many
expres-
sions
c~n
be
evaluated
in
fewer steps. Y
ou
would
probably
evaluate the
example
by
p<essing
m
IlmiIl
lID
D
1iiII
1ID@
£I
mm
@D
I1I
IlmiIl
0 D
£I
It
IS
worth
nOllng
that the
expresSIon
(:ould
have
been
written
as
Try
the
IlmiIl
( log
[.Ji7"79i
. 25) +6).
(3+4).
algorithm
now.
Except for
three
aulOma\ic
the
key
steps
are
iden
t ical
to
the
SOlution
shown
abo1/(!
.
1
Page 48
For Additional Sales and Ser
vice
Iniormsiion
Con-
laCI Your Local Hewleu-Packard Sales
Office
or
Cal l
4
C1a/99ll-<l100
(Ask lor
Calculator
CUSlomtIr Service).
Page 49
Scan Copyright ©
The Museum of HP Calculators
www.hpmuseum.org
Original content used with permission.
Thank you for supporting the Museum of HP
Calculators by purchasing this Scan!
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