How do digital frames get their pictures?

Answer 1

Digital frames work essentially as very limited and small computers. Because they have a central processing unit (CPU) and memory to store their operating systems, the frame can receive images and store them in the same manner a desktop computer would after a digital camera has transferred images to it.

Answer 2

They are like a little LCD computer monitor with a little "computer brain" you might say, that reads and displays the image file off your camera's memory stick, just like your computer would.