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In a remotely connected visual display terminal, the operator can present a display alarm to act as a reminder for a planned terminal session or a link up with other terminals.
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Personal Alarm Feature on Display Terminal
In a remotely connected visual display terminal, the operator can present a
display alarm to act as a reminder for a planned terminal session or a link up with
When the operator powers up the display terminal, for example, an IBM 8775
display station, he selects the alarm feature using a specially designated key on
the keyboard. He then enters the desired time delay in minutes at a set-up point
on the indicator row of the display.
The display terminal includes a timer-interrupt mechanism, and the user
triggers off the counting function with a repeat keystroke. The timer-interrupt
mechanism decrements the user-entered value to zero at which time the display
alarm is bounded. A "wake-up" message is simultaneously displayed on the
It is advantageous for this alarm feature to be at the termina1 rather than at
the host processor to which the terminal is connected, since there will then be no
degradation of the communication line speeds.