178
U
U
S
S
I
I
N
N
G
G
T
T
H
H
E
E
N
N
O
O
T
T
E
E
P
P
A
A
D
D
C
C
A
A
T
T
A
A
L
L
O
O
G
G
The hp 39g+ provides access to Notes which can be either attached to an
aplet or created as independent notes for any use. The notes belonging to
the standard aplets are blank unless you add to them, but copies you transfer
from another calculator may have had notes added to them. In particular,
any special aplets you download to your calculator from the internet (perhaps
via a teacher) may have instructions as a note and/or perhaps a sketch.
Aplet notes vs. independent notes
Every aplet has a note attached to it even if it
is blank. This note is available via a key
labeled NOTE (above the APLET key). Thus an
instruction to ‘press NOTE’ refers to the aplet
Note.
In addition to this, there is a Notepad
Catalog containing independent notes which
is available via a key labeled NOTEPAD found
above the ‘0’ key. Thus an instruction to
‘press NOTEPAD’ refers to the Notepad
Catalog, not to the aplet Note.
Notes attached to aplets are explained in the chapter “Using, Copying &
Creating Aplets” on page 189, so only a brief example is given.
The Slope Fields aplet is one that can be used
to introduce calculus students to the concept of
fields of slopes. It has been downloaded onto
my calculator from the HP HOME view web
site (http://www.hphomeview.com) on the
internet and it is now found on the APLET key.
If this aplet is run, the first thing visible is the
VIEWS menu. This menu is set up by the
programmer to control the aplet (see
“Programming the hp 39g+” on page 214).
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