The terminals were turned off. The mainframe kept running. In the computer room, the second shift operators ran batch jobs, printed reports, and did backups.
Didn't matter if the terminal was turned off or not either. The UI was burned into the phosphors.
Oh wow, so true, brought back many memories and also one of those overlooked aspects when you change a system as the previous burned in fields would with the right lighting create a whole avenue of data input errors that truly was a case of given the user a new monitor, which can be fun if your looking at it as a software issue in some new rollout. Yeah that can be a fun one and sometimes can't beat site visits as the local environment will never be replicated in any user transition training setup, however well it is done.
Didn't matter if the terminal was turned off or not either. The UI was burned into the phosphors.