Tandy TRS-80 - Page 56

HOW MUCH CAN ONE DISK HOLD?
Note: There
are
five
blank spaces
between
the
%
char-
acters in
lines
20 and 30.
Counting
the two
%
char-
acters,
this string
field (for
printing PEN and
PAPER) contains
seven
bytes.
Now the
data is already
in an attractive
print for-
mat.
You can
input and
print it using a
simple line
input
program.
Erase memory, type
and RUN:
more programs
which will put the
same
data in
direct access files.
CHAPTER
CHECKPOINT
sen INPUT and
IINT line cause
i a PRINT tine
IINT strings?
10 OPEN
"I"
>
*1
>
20
IF
EOFtl)
=
-1
30
LINE INPUT
»1 *
40 PRINT At
50 GOTO 20
G0 CLOSE
*1
1. What is the
minimum size of a
disk
Sle?
Why can't
it
be
smaller?
9. Hnvr rfnan th* Cnmngter
WJRJtTFf
ntimhe
OFFICE/DAT"
"'""
THEN G0
A*
All of the files
we've
created in this
chapter are
sequential access.
The next chapter
compares
four
m^diM
jftlef}
3.
How
does it WRITE strings
4. What
is the' difference betwi
LINE INPUT?
5.
What does a comma
in a PI
the Computer to do?
6. What does a
semi-colon
it
cause it to do?
7. How does the
Computer PE
46