Week in review: Meet IBM’s first chip modeled on the human brain

Here’s our roundup of the week’s top tech business news. First, the most popular stories VentureBeat published in the last seven days:

IBM produces first working chips modeled on the human brain — IBM has been shipping computers for more than 65 years, and it is finally on the verge of creating a true electronic brain.

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Exclusive: How LinkedIn used Node.js and HTML5 to build a better, faster app — LinkedIn’s new mobile app is two to 10 times faster on the client side than its predecessor thanks to Node.js.

Sleek Motorola Droid HD photos leaked alongside Droid Bionic — Leaked photos of the new Motorola Droid HD smartphone appeared alongside the much-delayed Droid Bionic today.

LinkedIn’s new mobile app is so gorgeous, you’ll actually want to use it — For many young professionals, it’s hard to imagine why you’d want to use a business social-networking site like LinkedIn on the go.

HP drops TouchPad price to $99 in Canada. Is the U.S. far behind? — After HP announced it was killing its webOS devices, many of us were left wondering what the company planned to do about the numerous TouchPad tablets still sitting on retail shelves.

And here are five more posts we think are important, thought-provoking, fun, or all of the above:

Google buys Motorola Mobility for $12.5B, says Android will stay open — Yowza. Google this week announced that it will buy Motorola Mobility — Moto’s mobile device arm — for $12.5 billion.

Hands-on preview of Gears of War 3: an epic story with closure — Gears of War 3 from Epic Games will be one of the game industry’s early seasonal blockbusters when the third-person shooter game debuts on Microsoft’s Xbox 360 Sept. 20.

With HP’s PC spinoff, vertical integration falls out of favor — Big companies go through a particular life cycle when it comes to expansion and vertical integration: They spend a lot of time growing businesses and then acquiring new ones.

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So long TouchPad, Pre: HP kills WebOS hardware business — HP confirmed this week it’s killing its webOS devices, including the TouchPad tablet, as well as the Pre and Pixi phones.

How Microsoft engineered Kinect to withstand gamers and lightning strikes — Microsoft engineers spoke publicly for the first time yesterday about how they built the Kinect motion sensing system, offering a rare glimpse inside the secret world of product design.