Which device is responsible for storing echo amplitudes as binary numbers for display stability?

• A. Digital Memory
• B. Analog Memory
• C. Digital to Analog Converter
• D. Scan Converter

Answer: (A)

Storing echo amplitudes as binary numbers for a stable display relies on digital memory. Once echoes are digitized, their amplitude values are kept in digital memory as binary data, providing a stable frame buffer for processing and rendering the image. This buffering prevents flicker and data loss across frames, ensuring consistent display quality. An analog memory would hold continuous voltages and is more prone to drift and noise, not the precise binary representation needed for stable rendering. A digital-to-analog converter outputs digital data as an analog signal but does not store the data itself. A scan converter reorganizes data for display formatting, but the actual storage of the amplitude values as binary numbers is handled by digital memory.