Google Inc. has acquired Keyhole Corp., a Mountain View, California-based digital mapping company. Financial terms of the deal were not disclosed. With an Internet connection, users enter an address or other location information and Keyhole's software accesses the database and takes them to a digital image of that location on their computer screen. The interactive software then gives users options, including the ability to zoom in from space-level to street-level, tilt and rotate the view, or search for other information such as hotels, parks, ATMs, or subways. Google also announced, effective immediately, a price reduction for Keyhole 2 LT from $69.95 to $29.95. A free, seven-day trial of Keyhole is available online.