Section 3:
USING YOUR PRINTER
In
troduction
Now
that
you've learned how to insert the ribbon and paper into your
printer, connect the printer
to
your computer, and how
to
test your
printer for problems, you're ready for the next step: putting the printer to
work for you.
Your printer does a lot more than
give
a clean, fast printing
of
your
work.
It
has its own internal microprocessor (computing system) which makes
it
both
versatile and practical. In addition,
it
doesn't need
to
use
up
precious
memory space in your computer because
it
stores everything
you
want
to
print
in
its own memory.
In this section we will show you how
to
use your printer
to
prin t listings,
program results, and graphic displays. You will also see
how
to
make
double width characters and even how to create a few
custom
designed
graphics. But before
you
go
any farther
in
this manual, make sure that you
are able
to
do
the following:
1.
Operate
your
Commodore computer.
2. Write elementary programs
in
BASIC.
3. Read and write files to and from a peripheral device, like a tape
cassette recorder or disk drive.
4. Open and close files.
If
you
are
not
familiar with any
of
the above procedures, check your
computer's User's Manual for the information
you
need.
1.
Special Printer-Associated Commands
When
you
want
to
print something on your printer, essentially what
you
are doing
is
transferring the video screen function to the printer. A few
special BASIC commands allow
you
to make this transfer. Most
of
the
other rules and syntax
of
BASIC remain the same. Don't forget to type the
RETURN key after each line
of
information.
The OPEN Command
This command creates a correspondence between a file number and a
17.
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