Which term describes circuit logic that detects conditions above the set limits?

The term that describes circuit logic capable of detecting conditions above the set limits is NOR logic. This type of logic gate outputs a true signal only when all inputs are false. In other words, if any input is above a certain limit, the output will be low. This makes NOR logic particularly useful in situations where conditions must be monitored, and an alarm or indicator needs to be triggered when set thresholds are exceeded.

NOR logic is integral in applications such as digital systems and alarms, where the detection of exceeded parameters is critical. This type of logical operation is inversely related to OR logic, which would output a high when any of its inputs are high, hence NOT functioning in the upper-limit detection context.

Other logic types like NAND, NOT, and AND do not exhibit this specific characteristic of monitoring and responding to conditions relative to set limits in the same way that NOR logic does. Thus, NOR logic is the most appropriate choice for this scenario.