Lowpricenice 2 GB MicroSD Memory Card

[Music] welcome to another video from explaining computers comm this time I'm going to talk about secure digital or SD cards these were first launched back in 1999 and are now available with many different capacity types speed classes and bus interfaces new SD card standards have also been announced and so in this video I'm going to explain all current of forthcoming SD card specifications as well as running some performance tests 20 years ago the first SD card were what we now call standard size smaller mini SD cards and arrived in 2003 followed by even smaller micro SD cards in 2005 today mini SD cards are rare with most devices using either a standard or a micro SD card and newer SD card specifications not supporting mini SD all SD card form factors are available in a range of capacity types the first of these is SD which supports cards up to 2 gigabytes in size next comes SDHC or se