Abstract: Disclosed examples determine a unique audience exposed to media while reducing memory resources of a computing device. Example instructions program programmable circuitry to log a plurality of impressions corresponding to media accessed at client devices; generate a first value based on a count of the impressions and a count of users of a database proprietor that accessed the media; generate a second value based on the first value and a count of demographic impressions logged by the database proprietor; and determine a unique audience size based on the second value.

Abstract: An improved port replicator for sharing peripheral devices between a portable computer and a desktop computer. The improved docking station including a docking station provides the ability to connect the ports of the two computers as well as to share peripherals between the computers. These interconnections are accomplished by means of a switch mechanism on the improved docking station and port replicator. The improved docking station and port replicator is realized by connecting a custom 50-pin cable between a desktop computer and docking station. The docking station includes a custom adapter for transferring the desired electrical signals from the desktop to either a portable computer at the docking station, the peripheral devices connected to the docking station, or to both the portable computer and the peripheral devices.