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HP HP-18C User Manual

HP HP-18C
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Determining Past or Future
Dates
The
HP-18C
can
determine
the
date
a specified
number
of
days
from
another
date
using
the
actual
calendar
.
To
calculate a
date
:
1. Key in
the
known
date
in
the
current
date
format
and
press
1iDII
·
2.
Key
in
the
number
of
days.
If
the
unknown
date
precedes
the
known
date, press
~.
Press 1iDIiI.
3.
Press 1mIIiI.
Example: Determining a future
date.
On
February
9, 1987, you
purchase
a
120-day
option
on
a piece
of
land
.
Determine
the
expira-
tion
date.
Assume
the
date
format
is
month/day/year
.
Starting
from
the
MAIN
menu:
Keys:
IIIB
..
2.091987
IiDII
120 IiDIiI
Display:
DATE1=
2
..
···09/
1987
MO~~
Description:
Displays
the
CALC
menu
.
Stores DATE!.
ACTUAL
DAYS=
120,00
Stores
the
number
of
days
in
the
future.
DATE
2 =
6/09
.....
1987
TUE
Calculates
the
expiration
date.
Clearing
the
Date
Arithmetic Variables
When
the
HP-18C
is
displaying
the
CALC
menu,
pressing
.1
CLEAR
ALL
I clears DATE1, DATE2, ACTUAL DAYS, 360 DAYS,
and
365
DAYS
to O.
The
date
arithmetic variables are also cleared
when-
ever you press
..
in
the
TIME
menu
.
126
8:
Time,
Alarms,
and
Date
Arithmetic

Table of Contents

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HP HP-18C Specifications

General IconGeneral
BrandHP
ModelHP-18C
CategoryPDA
LanguageEnglish

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