Memory cards: the key points

Modern gadgets such as digital cameras and cellular phones are of course much prized for their capacity to record and store extremely large quantities of data. Without the installation of a memory card in these gadgets however, most would perform far less impressively. For those looking to buy such gadgets, or who already own them, it is worth considering a few important points about memory cards.

There are several different types of memory card but most equipment aimed at the non-professional photography and consumer technology markets generally makes use of the following formats: SD cards, SDHC cards, and micro SD cards.

SD (‘secure digital’) cards are often found in devices such as digital cameras. SSDHCdhc (secure digital high capacity) cards are similar to SD cards but usually guarantee the buyer a very large amount of memory. Micro SD cards on the other hand are simply much smaller versions of SD cards and are designed to fit inside smaller gadgets such as mobile phones.

Different memory cards have different capacity levels. Memory cards in general can range from 128 MB right up to four gigabytes.

A 128 MB card, for example, can usually deliver up to 100 compressed images. A 256 MB card on the other hand can usually deliver twice as much.

When choosing a memory card however, consideration of the capacity should not only take into account the number of photographs to be taken, but also the power of the particular device in question. A digital camera that produces images of only two megapixels, for example, will usually only require a 128 MB memory card. An eight megapixel camera on the other hand will often require a one gigabyte memory card.

It is also vital to check that the type of memory card chosen is compatible with the device in which it is to be inserted; some digital cameras for example may not be able to function with SDHC cards.

Once a memory card has been selected it is also important to note that although most memory cards are generally robust, they still require attention in terms of the environmental conditions in which they are being used or stored.

Excessive moisture, extremely high temperatures, dirt contamination, and magnetic fields can all adversely affect a memory card, leading to possible corruption of any data captured, as well as limiting the card’s ability to capture new data. If possible, memory cards should also not be dropped, knocked or placed under heavy physical pressure. When not in use, returning a memory card to the plastic case in which it was supplied will often go some way towards avoiding most of these risks.

A final point to bear in mind is that memory card quality can also be affected over time and with re-use. It is therefore worthwhile replacing memory cards every year or so depending on level of usage.

For all your hi-tech devices we at Memory Card Zoo can advise on the best memory card options from our wide range of competitively priced top quality brands.

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