Portable Document Format (PDF) is an open standard fixed-layout electronic file format used to represent documents in a manner independent of application software, hardware, and operating systems that preserves document formatting and enables file sharing. What is...

Barnes & Noble Inc., the leading retailer of content, digital media and educational products, introduced the world’s first E Ink device NOOK Simple Touch with GlowLight. If you have got an e-ink reader like Amazon’s Kindle Touch,...