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CHAPTER SIX:
BUILT-IN APPLICATIONS--
COMMON FUNCTIONS
Learning lo use applicalions can be easy and iun. This
chapier takes you step
by
slep
lhrough the basjc common
iunctions and capabililies
o,
some
o,
the
Poiiolio's buill-in
applicalions. lt also explains how
to
handle the
Jiles
you
create
wrth
ihese applications.
The
liles you creale
are
called dala
liles because they conlaih
only
daia and no program rnslruclions. You need boih appli-
cations and dala iiles. Without applicalions, the compuier
would not know
whal lo do with
data
Wilhoul dala liles.
applicalions wouldnl have anylhinq on which
to
carry
out
lheir inslructions.
Some
lunclions
such
as
file handling and clipboard.
work
in
very sjmilar ways
in each ol lhe lour Iile-based applicalions.
These
common iunctions will be discussed belore ihe
indi
vidualapplications are explored
in
lhe nexl chapier.
FILE HANDLING
You can creaie Iiles with ihe iour lile-based applicalions
(Address Book. Diary, Editor, and Worksheet). No
iiles are
crealed when you use ihe Selup or Calculalor applicalions.
The Setup applicalion
is
a
ulilily program
a
iool used lo
modiiy your Portlolio working environment. You can print
a
"lape
ol lhe calculaiions periormed
by
the CalcrJlator,
but
you
cannot save
the iape to
a
Iile.
@
Not.,
You can
pnnl
a
lape oi carculalions on,y ,l lhe
necessary hardware
ra
prinlerl)
is
connecled.
Remember learning about Iile names and exlensions? Each
oi lhe iour lile-based appiicalions has ils own exlension:
.ADB
Address Book
.DRY
Diary
.TXT
Edrtor
WKS
Worksheel
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