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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