As shown in figure "A" of the illustrated block diagram of a central operating system configured for direct digital control, what does the output system block "DIGITAL OUTPUT" represent? EL-0095

Correct Answer: Option A — It receives digital outputs from the CPU and conditions these to digital signals for transmission to the digital actuators.

Digital output blocks manage discrete signals, such as on/off commands for solenoids, relays, or indicator lights. These blocks receive binary data from the CPU and condition it into the appropriate voltage or current levels required to actuate or de-actuate the connected digital field devices within the control system.