KEY
OR
CONTROL
Alphabetical
and
Numerical Keys
11-key Numeric
Pad
RUB
OUT
Cursor Address
Cursor
Sense
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Table 2-1. SUPER BEE Computer Terminal Keyboard,
Controls and Indicators (continued)
FUNCTION
CONTROL
AND
FUNCTION
KEY
GROUP
(continued)
Generate character codes corresponding
to
letter, numerical
or
symbol
engraved on key. Keyboard layout
is
similar
to
that
of
standard type-
writer, including
space
bar,
shift
and
shift
lock (which
is
lighted). Keys
generate upper and lower
case
letters, using
shift
keys.
Numerical key group arranged
for
convenient generation
of
large
numeric
entries. Keys perform the
same
function
as
those
for
numerical keys on
alphanumeric keyboard. This group
is
unaffected
by
setting
of
the
shift
lock key
or
the lower
case
inhibit
switch.
When
the terminal
is
in the Character
mod~depression
of
the RUB
OUT
key generates a delete code which
is
displayed
as
a
space
and stored in
Memory.
When
the code
is
encountered in a block transmit, a Carriage
Return-Line
Feed
function
is
performed and a CR-LF
is
transmitted.
When
the code is encountered in a block transmit while in Format mode,
the cursor
is
positioned at the
first
character location
of
the next un-
protected field (TAB). A CR-LF
is
transmitted.
In the Program
Entry
mode, the code
is
displayed
as
a
dot
(delete code).
Keyboard Operation:
Depress
RUB OUT.
1/0 Port Operation:
1/0
port
only. Receipt
of
ESC,
F
sets
the terminal ready
to
receive six
decimal digit characters (3 column
and
3 line). The cursor
is
then
positioned
to
any column (000 through 079) and l'ine (000 through 255)
in the memory, specified
by
the six decimal
digit
address characters.
It
is
possible
to
overwrite the entire memory
with
delete codes
if
the line
number
is
too
large
for
the number
of
lines stored in memory. The char-
acter numbers larger than 79 position the cursor in column 79.
1/0 Port Only. When a
two
character sequence (EXC and a
is
received
from
the 1/0, the terminal
is
conditioned
to
transmit
an
eight character code
sequence.
(
ESC,
2-10
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