Table of Contents
Advertisement
indication appear on the screen. The Audible Alarm also indicates that the cursor is in
the last character position on the screen. In addition, the Audible Alarm may be
sounded by CPU control per the application program.
A description of the control, alphanumeric, symbol, and special purpose keys is
provided below for each type of keyboard. The location of each key is shown as it is
discussed. When keys are different or are in different locations on the two keyboards,
illustrations of both keyboards are provided so that the differences may be compared
easily. When the keys are identical on the two keyboards, only the typewriter keyboard
is shown.
SHIFT fLOCK Keys
The SHIFT and LOCK keys are identical in function to those of a standard typewriter.
When the SHIFT key is pressed in conjunction with a character key, the character
shown on the upper half of the key is displayed. When the
k~yboard
is shifted in
conjunction with a dual-function control key, the function indicated on the upper half
of that key is performed (Le., DUP). Pressing ,a key without the SHIFTfLOCK,.key
executes the character or function shown on the lower half of the key.
Pressing the LOCK key locks the keyboard in the shifted position until released by
pressing either SHIFT key.
The 1377 keyboards provide a fuU secretarial shift. That is, when the LOCK key is
pressed, the LOCK key remains down until released by pressing eitoer SHIFT key.
This provides the operator with a clear indication that the LOCK key is in the pOSition
desired before data is typed.
An advantage provided as a standard feature of the 1377 keyboard is the upperllower
case graphics display. When the, SHIFT/LOCK keys are in an unshifted positton,
lower-case alphabetic characters are displayed on the screen; when shifted, upper-
case letters are displayed.
1377 .20-01-3/76
2-4
Advertisement
Table of Contents
