Philips 150P Electronic User's Manual

Also see for 150P: Electronic user's manual Electronic user's manual Specifications Specifications

Contents

its ports.DeviceA logical or physical entity that performs a function. The actual entity described depends on the context of thereference. At the lowest level, device may refer to a single hardware component, as in a memory device. At ahigher level, it may refer to a collection of hardware components that perform a particular function, such as aUniversal Serial Bus interface device. At an even higher level, device may refer to the function performed byan entity attached to the Universal Serial Bus; for example, a data/FAX modem device. Devices may bephysical, electrical, addressable, and logical.DownstreamThe direction of data flow from the host or away from the host. A downstream port is the port on a hubelectrically farthest from the host that generates downstream data traffic from the hub. Downstream portsreceive upstream data traffic.UpstreamThe direction of data flow towards the host. An upstream port is the port on a device electrically closest to thehost that generates upstream data traffic from the hub. Upstream ports receive downstream data traffic.RETURN TO TOP OF THE PAGEVVertical refresh rateExpressed in Hz, it is the number of frames (complete pictures) written to the screen every second.Glossaryfile:///E|/manual/english/150P/glossary/glossary.htm (4 of 5) [12/13/1999 8:00:42 PM]