What term is used for Inputs and Outputs that contain bits of information?

The term "Coded" refers to inputs and outputs that contain bits of information in a specific format or representation. In the context of fire alarm systems, coding can be crucial for communication between various components, such as detectors and control panels. This allows the system to interpret signals accurately, ensuring that alarms are triggered appropriately based on the status of different inputs.

Coded inputs and outputs utilize a structured method to convey data, which can include binary representations of information. This systematic approach helps in distinguishing between various signals and can enable more sophisticated monitoring and control within the fire alarm system.

In contrast, the other terms, such as "Normally open" and "Normally closed," refer to the physical state of contacts in switches or relays rather than to the data coding aspect of inputs and outputs. These terms describe how a circuit behaves in its default state and do not specifically pertain to the representation of information as coded signals do. "Non-Coded" would indicate a lack of coding, further differentiating it from inputs and outputs that are indeed coded.