The principal component of a digital photo frame is a thin, LCD (?Liquid Crystal Display?) screen, which may vary in size from a few inches across ? measured diagonally ? to 20 inches, or more. When choosing a digital photo frame ? particularly if you are shopping online, where you, obviously, cannot see, or hold it ? make sure that you do not confuse the screen size with the overall frame size, which, typically, is an inch, or two, larger. The Aigo 216 Digital Photo Frame, for example, features a 5.6 inch display.

The ?resolution? of the screen, or the total number of picture elements, or ?pixels?, of which it is composed, is an important consideration, insofar as it determines the level of detail, and overall quality, of a displayed image. Resolution is often quoted as the number of rows and columns of pixels, so you may see figures such as ?640 x 480?, or similar, and, generally speaking the higher the figures, the better.

Many digital photo frames, nowadays, employ the latest TFT (?Thin Film Transistor?), or ?active matrix? technology, for brighter images, with better colour reproduction, and, although, possibly a little more expensive, do produce excellent results, especially in conditions of high natural, or artificial, light.

Most digital photo frames have only a small amount of internal memory, or storage space, in which to hold digital photographs, and provide an interface, or connection, for an external memory expansion card. The cards that can be accommodated are, understandably, the types commonly used by digital cameras ? CF (?Compact Flash?), SD (?Secure Digital?), MMC (?MultiMedia Card?), and so on ? but you do need to make sure that your chosen frame is compatible with your digital camera, in this respect. The Aigo 216 model, for example, offers compatibility with CF, SD, MMC, and Memory Stick expansion cards.

Aigo is leading Chinese electronics manufacturer, renowned for its innovative range of portable storage and digital products. Aigo understands the importance of building mutually beneficial relationships with its customers ? one of the principles of its ?Six Win Ideology? ? and this been reflected in a 40% growth of the Aigo brand, year on year, since it began its UK operation, some 3 years go. Aigo products are now available, in the UK, from a range of high street, and online, retailers.

Transferring digital photographs to a digital photo frame can be performed from a computer, if you so desire, but an alternative is to simply transfer the complete memory card, from your digital camera, to the frame. This means that, even if you do not own a computer, you can share your digital photographs with your loved ones, even if they, too, do not own a computer, or have email, or Internet access.