A non-volatile memory card format for use in portable devices

A non-volatile memory card format for use in portable devices

• A. Secure Digital(SD)
• B. CompactFlash
• C. Memory Stick
• D. SmartMedia

Answer: (A)

The key idea is that this is asking for a memory card format that stores data without power, and is used across many portable devices. Secure Digital (SD) fits that description best because it has become the widely adopted standard for portable devices like cameras, phones, tablets, and many readers. It’s a small, versatile format with broad device support and ongoing capacity growth (SDHC, SDXC), plus a large ecosystem of readers and accessories, which is why it’s the most universally compatible choice. CompactFlash is older and physically larger, so it’s less common in today’s small portable devices. Memory Stick is Sony-specific and not as universally supported. SmartMedia is an older, largely obsolete format. All of these are non-volatile, but SD’s widespread compatibility makes it the best fit.

The key idea is that this is asking for a memory card format that stores data without power, and is used across many portable devices. Secure Digital (SD) fits that description best because it has become the widely adopted standard for portable devices like cameras, phones, tablets, and many readers. It’s a small, versatile format with broad device support and ongoing capacity growth (SDHC, SDXC), plus a large ecosystem of readers and accessories, which is why it’s the most universally compatible choice.

CompactFlash is older and physically larger, so it’s less common in today’s small portable devices. Memory Stick is Sony-specific and not as universally supported. SmartMedia is an older, largely obsolete format. All of these are non-volatile, but SD’s widespread compatibility makes it the best fit.