| 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 "ANALOG D/A" represent? |
| A) It receives digital outputs from the CPU and converts these to analog signals for transmission to analog actuators. |
| B) It receives analog outputs from the CPU and converts these to digital signals for transmission to digital actuators. |
| C) It receives digital outputs from the CPU and conditions these as digital signals for transmission to digital actuators. |
| D) It receives analog outputs from the CPU and conditions these as analog signals for transmission to analog actuators. |
