Information Communication Technology ICT – 3 Storage devices and media | e-Consult

SD (Secure Digital) cards are the most common type of solid-state media today. They come in various sizes (SD, SDHC, SDXC) and offer good speed and capacity. They are widely used in digital cameras, smartphones, and portable media players.

xD cards were popular in digital cameras in the past, particularly Olympus and Canon models. They are smaller than SD cards but generally have lower storage capacities and slower speeds. They are now largely obsolete.

CFast cards are designed for professional-grade cameras and video recording equipment. They offer significantly higher speeds than SD cards, making them suitable for capturing high-resolution video and burst photography. They are typically found in high-end DSLRs, mirrorless cameras, and camcorders.

Here's a table summarizing the differences: