Features; Keylock - IBM 5251 11 Maintenance Information Manual

KEYLOCK
A Keylock feature is available on the display station for
security of data.
When the keylock is in the locked position with the
Status switch at ·the Normal position, the display screen
is blank except for the system indicators on the right
side of the screen. Data displayed at the time the
keylock is changed to the locked position is controlled
by the application program. Keyboard data entered
while the keylock is in the locked position will not be
displayed by the display station.
The Keylock feature can be in either the locked or
unloc~ed
position and the power-on diagnostic still
functions the same.
Keylock
Locked -
-
Unlocked
FEATURES
I/O Control Microprocessing Unit
Features 5251 MIM 5-1