The 'SD' in 'SD Memory Card' stands for Storage Device. SD Cards can hold pictures and movies, depending on the available space and GB(gigabyte) size.
It stores your pictures and videos until you upload them to a PC or laptop. You can also use an SD Card to develop your pictures. All you do is go into any Wal-Mart, Walgreens, CVSPharmacy, etc., and put the SD Card into a machine and choose the pictures you want printed out.
This, alone, shows how far our technology for photography has come. From film, to dark rooms, to simple, little cards.
How's that for technology?
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