Google’s day-one keynote from the 2012 I/O developer conference has officially wrapped up. We’ll have plenty of analysis directly from the show, but here’s a quick look at what’s been announced so far. Nexus 7 Tablet Google officially unveiled the $199 Nexus 7 tablet , built by Asus. Its feature list is as follows: Android 4.1 (Jelly Bean) operating system 7-inch, 1280×800-resolution touchscreen Quad-core Tegra 3 chipset with a 12-core graphics processor 8GB of storage (16GB version available for $249) Front-facing camera Wi-Fi, Bluetooth and NFC Nine hours of HD video playback Weighs 0.75 pounds Google says the Nexus 7 tablet is “optimized for Google Play” – meaning it’s geared toward consuming music, movies, games, books, magazines and more. The feature-set and price tag will certainly put a whole lot of pressure on similarly-priced (but less powerful) 7-inch tablets like Amazon’s Kindle Fire and Barnes & Noble’s Nook Tablet. It’ll be interesting to see if it’s able...