Abstract: Noise-based monitoring systems and methods use unexpected noise (UEN) events to identify developing processes in an observed system. A monitoring system includes a general noise pattern (GNP) unit for receiving and processing a GNP spectrum from the observed system, a typical general noise (TGN) unit for eliminating all TGN components from the processed GNP spectrum in order to obtain unexpected noise (UEN) data and a UEN processor unit for processing the UEN data.

Abstract: An apparatus for and method of turning a computer on and off. A switch accepts on and off commands from a user which are transmitted to latch circuitry which, in turn, controls relay control circuitry. Relay control circuitry opens or closed a relay in response to the switch input. Issuance of an off command causes the computer to save its internal memory contents to nonvolatile memory storage. After the internal state of the computer is saved, the relay opens and cuts off electrical power to the computer, forcing it off. Issuance of an on command causes power to be restored to the computer and the internal state of the computer is restored from non-volatile memory to the computer. Alternatively, on and off commands may be received by latch circuitry from a remotely located central controller. Commands travel across a network and are received by network interface circuitry.