Introduction
Having a keyboard
as
part
of
a 3278 Display Station
is
optional. To the operators
of
most 3278 Display Stations, the keyboard will be their main contact with the
display station and, through it, with the host system.
The keyboard controls the display station and provides a means
of
signaling the
program.
It
is
through the keyboard
that
you
display data
on
the display screen.
The 3278 operates like a typewriter. Without looking
at
your
keyboard, you
can easily find the home row keys. The F and J keys on typewriter keyboards
have deeper than normal depressions
on
the key face. On data entry keyboards,
the three numeric keys
on
the home row (4, 5, and 6) have this deeper depression.
Typing on the keyboard prints the characters on the screen instead
of
on
paper.
This
is
an improvement when
you
have to correct typing errors.
Just
move the
cursor
to
the error, and key in the correct character . You can check anything
you have keyed except functions and non display fields because the document
is
always visible.
Your keyboard contains a clicker
that
causes a click when
you
press the keys.
You can
turn
the click
off
or
on
by using the Click (
c::n
) key on your key-
board.
It
is
important to know that generally:
• When
you
have the clicker turned on, the click tells
you
that
the keyboard
is operational and that the data
you
are keying
is
being accepted. In this
case, absence
of
the click indicates
that
the
keyboard
is
disabled.
• When
you
have the clicker turned off, the absence
of
the click tells you
that
the keyboard
is
operational and
that
the data you are keying
is
being acoepted.
In this case, the presence
of
the click indicates
that
the keyboard
is
disabled.
Therefore, by being aware
of
the clicking, or
of
its absence,
you
can tell when the
operation
of
your keyboard is
not
normal. When operation
is
not
normal,
your
display station Operator Information Area symbols aid you in correcting the
problem.
Note: For a 3278
not
attached to a 3274 or to a 3276, the functions
of
some
of
these keys may be different from those described here.
Refer
to the
appropriate appendix for a description
of
those differences.
Chapter
3.
Keyboards
3-3
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