What type of memory card is commonly used in digital cameras and mobile devices?

The commonly used memory card in digital cameras and mobile devices is the SD card. SD stands for Secure Digital, and these cards are specifically designed to store data such as photos, videos, and other types of media that digital devices generate. Their compact size, portability, and varying storage capacities make them ideal for use in devices that require removable memory.

SD cards come in various formats, including standard SD, miniSD, and microSD, with microSD cards being particularly prevalent in smartphones and smaller digital cameras. The widespread compatibility of SD cards with many consumer electronics has solidified their presence in the market.

Other options do not serve the same purpose as SD cards. Flash drives and USB sticks are also forms of portable storage, but they typically connect via USB ports rather than being inserted directly into devices like cameras. Hard drives, whether internal or external, are generally used for larger storage needs in computers and do not fit the mobile or compact requirements that SD cards fulfill in digital cameras and mobile devices.