Which of the following best describes a digital output?
A. A variable output
B. Process up to 10,000 signals per second
C. Convert readings to an electrical signal
D. Either on or off
Answer (2)
Digital outputs have two states.
Variable output is incorrect because digital outputs are discrete.
Processing signals and converting readings are not the primary function of a digital output.
The best description of a digital output is: e i t h ero n oro ff .
Explanation
Understanding Digital Output Let's analyze the options to determine which best describes a digital output. A digital output is characterized by having only two states.
Analyzing the Options Option A, 'variable output,' is incorrect because digital outputs do not produce a range of values; they are discrete. Option B, 'process up to 10,000 signals per second,' describes a processing capability, not the fundamental nature of a digital output. Option C, 'convert readings to an electrical signal,' describes the function of a sensor or analog-to-digital converter, not a digital output. Option D, 'either on or off,' accurately describes the two states of a digital output.
Determining the Best Description Therefore, the best description of a digital output is 'either on or off'.
Examples
Digital outputs are used in many everyday devices. For example, a light switch is a simple digital output: it's either on or off. Similarly, a digital control system in a car might use digital outputs to control whether a specific warning light is illuminated on the dashboard. These on/off signals are fundamental to how many electronic systems operate.
A digital output can best be described as 'either on or off.' This definition captures its binary nature, distinguishing it from variable or processing functions. Therefore, the correct answer is option D.
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