A Ti alloy poppet valve consists of a valve stem and a valve head, and is employed as intake or exhaust valve in an internal combustion engine of an automobile. A weighted combination of functions of the determined values is calculated as a measure of performance of the monitored computer. In an attaching portion for the base chassis and a casing, a spring structure portion having a sloped portion and a space is provided in an area of the base chassis so as to correspond to a connecting part of the casing. The angled support section is attached to the base and provides a surface extending at an angle from the base plane, whereon food to be cooked on the barbeque may be placed against the surface and supported at an angle to the heat source. User information can be optionally provided and used to emphasize or deemphasize wireless coverage data in the determination of the route for the travel objective. This shortens the access times considerably and thus improves overall performance without power penalty.