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Engine_2014 : Electricity - 229/2299
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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.
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