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Google Android has plenty of whistles

Google Inc. showed off its nearly completed mobile software system to about 3,000 computer programmers Wednesday, hoping to boost its services and advertising for people on the go.

Although brief, the demonstration at the Internet search leader’s annual developer conference in San Francisco represented the most extensive public look so far at “Android” — an open-source platform being designed for “smart” phones and other mobile devices that surf the Web. Android was first announced nearly seven months ago.

The bells and whistles unveiled Wednesday included: a way to unlock phones by drawing a specific shape on the touchscreen instead of entering a password; bookmarks for favorite Web sites on the device’s home page; a “compass” tool that automatically roams with the phone while a user looks at photographic images of a city map; a magnifying tool to zoom in on Web content; and a mobile version of the video game “Pac Man.”

The demonstration relied on touchscreen technology similar to Apple Inc.’s iPhone, but Android can also be tailored to work with a tracking ball, said Andy Rubin, who is overseeing the project.

While acknowledging the work on Android is nearly done, Rubin deflected a question about how much longer consumers will have to wait for a phone powered by the new software. Sticking to the timetable Google has used throughout the project, Rubin said Android will hit the market some time during the final six months of this year.

Several handset makers, including Samsung Electronics Co., HTC and LG Electronics Inc., are among the 34 partners that Google has recruited to assist Android for launch.

Google also hopes programmers will create a wide variety of products that will run on Android. That’s one of the reasons the Mountain View-based company chose to flaunt the free software at the developers’ conference.

By making it easier and more appealing for people to access the Internet on their cell phones, Google believes it eventually will make more money from the ads it shows next to search results and other Web content. The company also is starting to show more video advertising on its YouTube subsidiary, which already is a staple on the iPhone and received a special button in Wednesday’s demonstration of Android.

Google is expected to generate more than $20 billion in advertising revenue this year, but most of that money will come from ads viewed on personal computers.