ASVAB (Armed Services Vocational Aptitude Battery)Electronics Information (EI)Easy
What is the primary characteristic of a digital signal compared to an analog signal?
- AIt is always transmitted wirelessly.
- BIt is susceptible to less interference.
- CIt represents information using discrete, distinct values.
- DIt has continuous values over a range.
Show answer & explanationAnswer & explanation
Correct answer: C. It represents information using discrete, distinct values.
Digital signals use discrete, distinct values (typically binary 0s and 1s) to represent information, contrasting with analog signals that have continuous values over a range.
Why the other options are wrong
- A. Both digital and analog signals can be transmitted wirelessly or via wires.
- B. While digital signals can be more robust to noise, this is a consequence, not the primary characteristic defining them.
- D. This describes an analog signal.
Digital Signal
An electronic signal that represents data as a sequence of discrete values, typically binary (0s and 1s), rather than continuous values.
- Uses discrete, distinct values.
- Often represented by two states (high/low, on/off).
- Less susceptible to noise degradation over long distances than analog signals.
Memory trick: Digital Differentiates, Analog Ambles.