Before analog controls can react to them, digital output signals are processed by what?

In the realm of control systems, digital output signals must be converted into an analog format to be utilized effectively by various control mechanisms or devices. This conversion is achieved through the use of analog converters, specifically Digital-to-Analog Converters (DACs). These devices take the digital signals—typically in binary form—and translate them into a continuous analog signal that can be recognized and reacted to by analog controls.

The other options, while they have their respective roles in different contexts, do not specifically pertain to the processing required for digital signals to interact with analog control systems. Teletype printers, for example, are not involved in this conversion process. Digital displays show information but do not process signals for control applications. Sensors, on the other hand, are used to monitor various parameters but do not perform the conversion function necessary for the digital output to be actionable by analog systems. This makes the use of analog converters crucial for integrating digital outputs with analog controls in control systems.