Which term refers to the conversion of an incoming analog signal into a digital value for storage and processing?

• A. Digitization
• B. Modulation
• C. Filtering
• D. Quantization

Answer: (A)

Digitization captures the process of turning an incoming analog signal into digital data suitable for storage and processing. This involves sampling the signal at discrete time intervals and converting each sample into a digital value. Quantization is a specific step within digitization that assigns each sampled value to the nearest level in a finite set, but the overall conversion to a digital form is digitization. Modulation is about encoding information onto a carrier wave for transmission, and filtering changes the signal’s frequency content rather than converting it to digital data. Therefore, this term best describes converting an analog signal into a digital value for storage and processing.