What are SD, SDHC and SDXC memory cards?


"SD cards is a short for Secure Digital and also comes in High Capacity and Extended Capacity in order to store data in a wide range of storage space, so called SDHC and SDXC. A kind of flash memory fabricated on a wafer or a chip with integrated ROM circuits, with various class, data transfer rate and access speed."

SD cards

SD cards stands for Secure Digital cards, are a kind of non volatile memory fabricated on a thin wafer with integrated circuits also known as flash memory, which deletes data using electrical pulses. SD cards used in digital cameras, mobile phones and set top boxes to store images and data respectively. SD cards comes in different size like mini SD cards and micro SD cards. SD cards also introduced in different classes like class 4, class 6 and class 10. Class 10 is considered good in SD cards because it transfer data upto 10 MBPS speed. SD cards can store data from 128 MB to 2 GB.

SDHC cards

SDHC cards stands for Secure Digital High Capacity cards. SDHC cards are an extension of SD cards which provides data storage more than SD cards. An SDHC card can store data from 4 GB to 32 GB. SDHC cards also comes in different size and classes like SD cards. SDHC cards also categorized in different categories like SDHC cards with UHS ( Ultra High Speed ) I and UHS II, which provides maximum speed and and data transfer perforamance.

SDXC cards

SDXC cards stands for Secure Digital Extended Capacity cards. SDXC cards are an extension of SDHC cards which provides data storage more than SDHC cards. An SDXC card can store data from 64GB to 2TB. SDXC cards also comes in different size and classes like SDHC cards. They also categorized in different categories with UHS ( Ultra High Speed ) I and UHS II, which provides maximum speed and data transfer performance.

So we have learned now, What are SD, SDHC and SDXC memory cards? their categorization and storage space, and where it is used, keep learning from computerflicks. Please leave comments.

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