HP HP-01 User manual
HEWLETT
z
|
PACKARD
HP-01
Owner’s
Guide
00001-90001,
Rev.
C
5/77
May
1977
Printed
in
U.S.A.
©
Hewlett-Packard
Company,
1977
Contents
INTRODUCTION
.o
i
e
e
e
et
ettt
et
et
ieaas
6
HP-01
HIGHLIGHT
S
...
i
e
e
e e
et
e
i
e
ettt
eaeanas
7
HP-01
KEYBOARD
SUMMARY
...
et
e
8
A
WORD
OR
TWO
ABOUT
THESE
INSTRUCTIONS
..........
..o,
10
O
100
12
To
Display
the
TiMe
. .
...ttt
e
e
e
e
e
e
12
To
Setthe
TIMe
..
...
12
To
Set
12-
and
24-Hour
Display
MOdES
. .
...
...
14
Changing
TiMeE
ZONES
. .
..ottt
ettt
e
et
e e
e
et
e
e
e e
e
s
15
Time
and
Time
Interval
Calculations
.
..............
..
i
s
17
Converting
Time
to
Decimal
Hours
..
......
...
...
19
Correcting
Time
Entry
ErrOrs
...
...
.
e
20
O
LA
22
To
Display
the
Alarm
Setting
.
...
...t
22
TO
Set
the
AlaIm
.
22
To
Disable
the
Alarm
...
..o
o
23
To
Reset
the
Alarm
...
.
e
23
O
TIMER/STOPWATCH
...ttt
e
e
e
24
To
Display
the
Timer/StopwatCh
.
...
...
.
e
24
To
Set
the
TIMer/StoPWatCh
. .
...
.o
e
e
24
To
Start,
Stop,and
Reset
.
..
...
25
TO
RESEL
10
ZEI0
..
oot
27
Taking
Splits
...
..o
27
Inhibiting
the
ContinUous
DisSplay
...
.........ouu
it
et
29
Ssummaryof
@
and
@
...
..
.30
Dynamic
CalCulations
.
..
...
...
..
...
.
30
.DATE/CALENDAR
.....................................................................
34
To
Display
the
Cumrent
Date
.
...t
e
34
To
Setthe
Date
..
...
34
To
Set
the
Date
Display
MOAE
...
...t
e
35
Future
or
Past
Dates
.
.......
...
.
36
Number
of
Days
Between
Dates
. .
...
...
37
Day
of
the
WeekK
.
...
...
38
Day
and
Week
of
the
Year
.
...
... ...
.
.
38
Correcting
Date
Entry
EITOrS
... ...
...
39
USING
THE
CALCULATOR
...
e
e
e
42
A
MEtC
.
42
Clearing
Operations
. .
...
...
43
Automatic
DOUDIING
...
...
44
Automatic
SQUAarNg
.
........
...
45
Chain
CalCulations
. . .
..
..ot
46
Exchange
FUNCHON
..
...
...
e
47
Automatic
Constant
.
...
...
49
Percentage
Problems
.
...
...
.
50
Calculating
Percents
...
......
...
50
Net
Amount
and
DISCOUNES
.
.. ..
..ottt
e
et
e
e
e
50
Finding
Proportions
..
...
..
.
52
Percent
of
Total
..
...
..
53
Display
FOrmatting
. .
..
...
54
Overflow
and
Underflow
DiSplays
. .
...
...ttt
e
e
55
APPLICATIONS
L.
56
Calculating
a
Gratuity
(Percentage)
.
.............ouiuiiii
e
56
Checkbook
or
Charge
Account
Balance
(MEMOIY)
.
.........uiuiiui
it
56
Pulse
Rate
(StopwatCh)
.
........
...
.
i
57
Using
the
Timer
as
a
Second
Alarm
(TIMEr)
.
......
...ttt
58
Beating
the
Record
(Timer/Stopwatch)
........
...
.o
e
59
Lap
Times
(Stopwatch
and
Calculator)
............
...
60
Road
Rally
(Alarm,
Dynamic
Calculation)
.
........
...t
62
Time
and
Distance
to
Destination
(Dynamic
Calculation)
................
... ...
...l
64
Metric/U.S.
Conversions
(Calculator)
..........
...
i
66
Having
FUN
67
Thunder
and
Lightning
(Stopwatch
and
Calculator)
................iiiiiiiiiiieiieniinann
67
Biorhythms
(Calendar
and
CalCulator)
.
...
...
...ttt
69
APPENDIX
A:
MAINTENANCE
AND
SERVICE
......
...
72
Operating
Characteristics
and
Specifications
..
..............oiuiuiiiiiiii
i
72
Battery
Operation/Replacement
. .
...
...
74
Adjusting the
Band
..
...
76
ClEaNING
.
.o
80
ENGraVving
.
...
e
80
Serial
NUMDET
.
...
80
Full
One-Year
Warranty
..
...
.........o
i
e
e
80
Battery
Replacement
.
... ...
..
81
OUt-Of-Warranty
.
...
...
81
Warranty
Information
Toll
Free
Number
.
........
...
i
i
82
Warranty
Transfer
.
...
..
82
Shipping
INStrUCHONS
. .
...
o
82
APPENDIX
B:
OPERATIONAL
DESCRIPTION
......
..ottt
84
APPENDIX
C:
SHORTWAVE
TIME
SIGNAL
BROADCASTS
.........ociiiiiiiiie
100
Introduction
Time:
elusive
and
immediate...limited
yet
infinite.
Because
time
is
important
to
you,
Hewlett-
Packard
introduces
the
HP-01,
a
new
dimension
in
time
management
and
personal
computa-
tion.
It's
a
digital
electronic
wristwatch,
a
personal
calculator,
an
alarm
clock,
a
stopwatch,
a
timer,
a
200-year
calendar...and
yet
it
is
more
than
all
of
these.
The
HP-01
is
a
unique,
interactive
combination
of
time
and
computation
functions
that
offers
unmatched
capability
and
versatility.
You
can
do
anything
from
viewing
the
time
to
dynamically
calculating
the
cost
of
a
long-
distance
phone
call
or,
if a
pilot,
finding
the
distance
to
your
next
checkpoint.
For
years,
Hewlett-Packard
atomic
clocks
have
been
used
by
international
observatories
and
authorities
to
set
time
standards
with
accuracy
to
within
one
second
in
over
3000
years.
Currently,
millions
of
HP
pocket
calculators
are
in
use
throughout
the
world.
The
same
company
with
this
proven
and
respected
clock
and
calculator
expertise
stands
behind
your
HP-01.
Hewlett-Packard
congratulates
you
on
the
acquisition
of
this
fine
instrument.
We
hope
you
will
wear
and
use
it
with
the
same
pride
that
its
creators
at
HP
take
in
this
remarkable
technical
achievement.
CALCULATOR
Four
function,
percentage,
scientific
notation.
CALENDAR
200
year,
Day
of
week,
Day
of
year.
DATE
Month-day-year,
Day-month-year.
ALARM
Hours,
minutes,
and
seconds;
12
hour,
AM
or
PM.
HP-01
Highlights
HEWLETT
e
R
PACKARD
STOPWATCH
.01
second
reso-
lution.
TIMER
Up
to
100
hours,
with
alarm.
TIME
Hours,
minutes,
and
seconds,
12
hour
or
24
hour.
MEMORY
8
digit
addressable.
HP-01
Highlights
7
HP-01
@
Reads
display;
also
resets
stopwatch
and
takes
splits
(page
30).
0006000600
©©
Digit
keys
for
entering
numbers
(page
42).
@
Timer/stopwatch
function
(page
24).
@
Decimal
point;
also
used
to
separate
seconds
from
hundredths
of
seconds
(page
24).
Keyboard
Summary
0y
Day
of
the
week
(page
38).
2!
Indicates
date
in
twenty-first
century
(page
34).
-+
Changes
the
sign
of
displayed
number
(page
42).
—
Exchange
function,
switches
the
position
of
two
numbers
(page
47).
@
Alarm
function
(page
22).
@
Used
to
store
data
intoD,
A,
M,
T,
S.
Also,
used
to
access
the
shift
functions
(page
10).
@
Memory;
used
to
store
numbers,
times,
and
dates
(page
46).
@
Percent
function
(page
50).
@®
Clear
function
(page
44).
@cColon,
used
to
separate
time
fields
(page
12).
OO0
OO
Arithmetic
operators
(page
42).
9
Equals
key,
provides
answers
to
arithmetic
calculations
(page
42).
©
Indicates
PM
time
(page
12).
L
Converts
hours,
minutes,
seconds
to
decimal
hours
(page
19).
@
Time
(watch)
function
(page
12).
.
Converts
decimal
hours
to
hours,
minutes,
seconds
(page
19).
o
|Indicates
AM
time
(page
13).
@
Date
(calendar)
function
(page
34).
@
Separates
date
fields
(page
34).
HP-01
Keyboard
Summary
9
10
A
Word
Or
Two
About
These
Instructions...
Your
HP-01
is
shipped
fully
assembled,
including
the
batteries.
Six
keys—
@,
@,
©.
@. @.
and
@
—
can be
pressed
with
your
finger.
Two
keys—
@
and
@
—
are
recessed
slightly
to
prevent
accidental
continuous
stopwatch
display.
All
keys
can
be
operated
with
the
stylus
(fitted
in
the
watchband
clasp)
or
the
stylus
tip
of
the
pen.
(Do
not
use
the
writing
tip;
it
may
damage
the
keys.)
When
you
press
a
key,
the
display
blinks
momentarily
to
let
you
know
that
the
keystroke
function
has
been
recognized.
Some
keys
on
your
HP-01
perform
more
than
one
function.
To
access
the
alternate
function,
press
the
@
key
first.
21
To
select
the
function
above
the
key,
first
press
.
then
press
the
function
key
(@).
This
appears
in
the
handbook
as
.?J
O
To
select
the
function
printed
on
the
key
(addition),
press
the
key
(€D).
The
@
key
is
also
used
to
store
values
in
@,
@.
@,
@,
and
©.
Two
display
formats
are
available
for
time
and
dates.
Examples
throughout
this
handbook
use
the
12-hour
time
display
mode
although
they
apply
equally
to
the
24-hour
time
display
mode.
Similarly,
the
month,
day,
and
year
format
is
used
for
displaying
dates
in
these
examples,
but
you
can
also
select
day,
month,
year
format.
When
you
are
working
with
the
clock
functions—watch,
alarm,
stopwatch
or
timer—your
dis-
played
answer
may
differ
slightly
from
the
answer
given
in
this
guide.
That's
because
it
will
take
a
few
seconds
to
push
the
keys,
during
which
time
the
HP-01
clock
is
incrementing.
Your
HP-01
displays
the
correct
answer;
it
may
be
greater
or
less,
by a
few
seconds,
than
the
answer
printed
here.
If
the
display
turns
off
while
you
are
practicing
these
examples,
simply
press
)
(read)
to
recall
the
number.
If
you
make
a
mistake,
either
press
@&
once
to
clear
the
last
entry,
or
press
@
twice
and
start
the
problem
over
again.
Remember
to
clear
the
calculator
(@
@)
if
you
are
in
doubt
as
to
the
calculator
status.
After
you
have
mastered
the
basic
functions,
try
some
of
the
diverse
problems
in
the
Applications
section—you'll
discover
the
amazing
versatility
of
your
HP-01.
A
Word
or
Two
About
These
Instructions
11
12
Q@
e
TO
DISPLAY
THE
TIME.
To
view
the
time
of
day,
merely
press
@.
The
time
is
displayed
for
2.5
seconds,
then
the
display
automatically
turns
off.
TOSETTHETIME.
Key
inthetime
as
hours:
minutes:
seconds
(HH:MM:SS),
and
press
00
Immediately
the
time
is
set.
Your
HP-01
is
set
to
the
12-hour
AM/PM
mode,
unless
you
change
it. If
you
wish
to
enter
a
PM
time,
key
in
HH:MM:SS,
and
press
@@
@.
A
decimal
point,
displayed
on
the
right,
indicates
PM
time.
Example
Press
Display
6:30
AM
(6]:I3Yol-]7]
_
GB:dnoo
6:30
PM
06680000
G:30
OO0.
Midnight
is
displayed
as
12
AM(
|2:00
00
),and
noon
is
displayed
as
12
PM
(
12:00
po.
)
inthe12-hour
display
mode.
To
enter
a
time
during
the
hour
between
mid-
night
and
12:59:59
AM,
you
must
use
the
AM
prefix
function.
Example
Press
Display
12:45
AM
000060._00
12:45
o0
Ablank
entry
in
a
time
field
is
interpreted
as
zero.
To
key
in
6:00:00
PM,
you
can
take
a
shortcut:
Example
Press
Display
6
PM
00000
‘600
o0
Time
13
Time
14
TO
SET
12-
AND
24-HOUR
DISPLAY
MODES.
To
switch
from
12-hour
AM/PM
to
24-hour
mode
when
the
time
is
displayed,
simply
press
@
@.
(The
time
can
be
set
in
the
24-hour
mode
as
well
as
the
12-hour
mode.)
To
change
back
to
AM/PM
mode,
press
@@
again.
Press
Display
This
time
display
conversion
is
particularly
helpful
if
you
are
involved
with
both
military
and
civilian
time
schedules,
or
if
you
travel
and
do
business
internationally.
Suppose
your
HP-01
reads
1
/:54
|2
|
and
you
are
not
sure
which
display
mode
is
set.
Simply
add
12
hours,
and
examine
the
display.
12-Hour
Press
AM/PM
Mode
24-Hour
Mode
o
Iisq
e
T
00086
ke
23:54
I8
Decimal
point
will
appear.
-/
\Hours
will
change.
This
procedure
does
not
change
the
time
setting
inside
your
HP-01.
CHANGING
TIME
ZONES.
If
you
are
changing
time
zones,
simply
add
or
subtract
the
appropriate
number
of
hours
as
follows:
©
@
or
(number
of
hours)
@@
Time
15
Time
16
For
example,
if
you
are
flying
from
San
Francisco
to
Geneva,
a
9-hour
time
difference:
San
Francisco
Press
Geneva
10:43
AM
00000
s
Travelling
in
the
opposite
direction:
Geneva
Press
San
Francisco
4:45:37
PM
00000
C
048
31
Typically,
you
will
add
or
subtract
whole
hours, but
you can
also
use
a
fractional
number
of
hours.
For
example,
the
time
difference
between
San
Francisco
and
the
Cook
Islands
is
212
hours.
You
can
adjust
the
time
in
either
of
two
ways:
San
Francisco
Press
Cook
Islands
5:45
PM
0000600600
35
OO0
5:45
PM
000066000
5:15
0o
Adding
or
subtracting
.5
hours
is
the
same
as
adding
or
subtracting
30
minutes.
Travellers
can
cross
the
International
Date
Line
with
minimum
confusion
and
maximum
ease.
If
you
adjust
the
time past
midnight,
the
date
in
the
calendar
is
automatically
adjusted.
If
you
press
@@
B
@
O
@,
the
time
remains
the
same,
while
the
calendar
contains
the
date
of
the
following
day.
TIME
AND
TIME
INTERVAL
CALCULATIONS.
You
can
add
or
subtract
a
time
interval
with-
out
affecting
the
watch
setting
by
using the
@
key.
@
or
(number
of
hours)
@
Time
17
Time
18
Example:
You
are
in
Munich,
Germany,
and
wish
to
telephone
Hong
Kong.
What
time
is
it
in
Hong
Kong?
Press
Display
o
000
o
You
can
also
use
just
time
intervals
or
segments
of
time
in
arithmetic
calculations.
(time
interval)
or
(timeinterval)e
Munich
time.
Hong
Kong
time.
Munich
time.
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