The question raised in tech columns lately has been whether Barnes & Noble’s Nook can keep pace with the technological refresh and innovation of the much larger Apple, Google, and Amazon–and Wednesday the company aims to answer “yes” with two new high-resolution reader-focused tablets. They are introducing the seven-inch Nook HD and the 9-inch Nook HD+, with proprietary high-quality screens, at competitive prices. The smaller model starts at $199–directly comparable to the new Kindle tablet (Nook gives you an AC adapter and no ads as part of the price, but it’s their 8GB model; their 16GB version, the same as […]