Computers are more and more powerful now,but it has a shortcomig, a little heavier, the battery can’t apply long-time running. So we can’t take it by handle for portable use, thus mini tablet came out and quickly go popular. There are many such mini tablet at present, today we just talk about Kindle Fire from Amazon. The Kindle Fire is a mini tablet computer version of Amazon.com’s Kindle e-book reader. It’s announced on September 28, 2011. The Kindle Fire’s external dimensions are 7.5×4.7×0.45 inch (190×120×11 mm), with the visible area of the screen a little smaller than a standard 4×6″ photograph.