Question 70General Subjects - Assistant Engineer

The correct answer is C) It receives digital outputs from the CPU and converts these to analog signals for transmission to the analog actuators. The "ANALOG D/A" block in the illustrated central operating system diagram represents a digital-to-analog (D/A) converter. This component is responsible for taking the digital output signals from the central processing unit (CPU) and converting them into analog signals that can be transmitted to analog actuators for control of the system. The other answer choices are incorrect because they do not accurately describe the function of the "ANALOG D/A" block. Option A describes an analog-to-digital (A/D) conversion, which is the opposite of what this block does. Option B and D involve conditioning the signals, but do not specify the conversion from digital to analog as the correct answer does.