The need for portable storage of data led to the invention of different kinds of memory cards. It’s very possible to store thousands of images, documents, files and other data in a single memory chip. Such data can be stored in a variety of formats. They can also be stored in the chip for hundreds of years. Memory cards showcase in a variety of types and sizes. They are generally referred to as SD, SDHC, MICROSD or MICROSDHC. Let’s throw more light on the cards.
The term “SD” refers to “Secure Digital”. It’s a non-volatile memory chip that can be used in several devices like PCs, cell phones, tablets, digital cameras, iPads and so on. It showcases in several brands and models. The format actually includes 4 unique families of cards. They are regulated by the Secure Digital Association (SDA). They include:
- SDSC (Secure Digital Standard-Capacity)
- SDHC (Secure Digital High-Capacity)
- SDXC ( Secure Digital eXtended-Capacity)
- SDIO ( Secure Digital Input/Output)
The Basic Sizes
The families of SDSC and SDHC Memory cards are manufactured in 3 major sizes. These include the standard or original size, the mini size and the micro size. Hence, there are different sizes of such cards available in the market. Among them include:
On the other hand, the family of SDXC cards is not available in mini size while that of SDIO is also not available in the micro size. They are simply manufactured in their original standard sizes. In any case, most of the memory cards come with official logos belonging to their manufacturers. They also come with certain inscriptions showcasing their capacities, model numbers and other details.
Memory cards of all kinds are produced according to specific capacities. The range includes 500 MB, 1GB, 2GB, 4GB and 8GB. The prices for the cards vary according to their capacities.
Memory cards serve a variety of purposes. They can store several files, pictures documents, videos and other data with ease. They are usually very small and portable. They can serve as external storage devices used for backing up documents. They are very durable. They don’t get damaged easily.
In all, the memory cards are very easy to come by. You can purchase them from reliable dealers that market computer accessories. You can also get them through reliable online vendors.