| 摘要 |
In one embodiment, a plurality of digital displays is connected to a backup power source and to a control computer having a processor and a memory. The memory is configured to communicate with the processor and has instructions that, in response to execution by the processor, cause the processor to determine if an emergency exists. If it is determined that an emergency exists, the processor will send a signal to the plurality of digital displays that includes instructions for the digital displays to enter an emergency mode. |
