User manual LG L1770HQ

[. . . ] To avoid the risk of shock or permanent damage to the set, do not expose the monitor to rain or excessive moisture. Do not use alcohol or ammonia-based liquid to clean the monitor. If necessary, clean with a slightly damp cloth. Disconnect the monitor from the power supply before cleaning. [. . . ] With TTL driving, the red, green and blue signals can only be switched on or off or provided with an intensity signal. A TTL-driven monitor can thus display a maximum of 64 colors. Video standards such as MDA, CGA and EGA are based on TTL level. RETURN TO TOP OF THE PAGE U USB or Universal Serial Bus A smart plug for PC peripherals. USB automatically determines resources (like driver software and bus bandwidth) required by peripherals. USB makes necessary resources available without user intervention. file:///D|/EDFU/crt_19_5/edoc/english/GLOSSARY/GLOSSARY. HTM (18 of 22)2005-04-21 ¤W¤È 09:33:20 Glossary q q q USB eliminates "case angst" -- the fear of removing the computer case to install add-on peripherals. And USB also eliminates adjustment of complicated IRQ settings when installing new peripherals. USB does away with "port gridlock. " Without USB, PCs are normally limited to one printer, two Com port devices (usually a mouse and modem), one Enhanced Parallel Port add-on (scanner or video camera, for example) and a joystick. More and more peripherals for multimedia computers arrive on the market every day. With USB, up to 127 devices can run simultaneously on a computer. USB permits "hot plug-in. " There's no need to shut down, plug in, reboot and run set-up to install peripherals. At an even higher level, device may refer to the function performed by an entity attached to the Universal Serial Bus; file:///D|/EDFU/crt_19_5/edoc/english/GLOSSARY/GLOSSARY. HTM (19 of 22)2005-04-21 ¤W¤È 09:33:20 Glossary for example, a data/FAX modem device. Devices may be physical, electrical, addressable, and logical. Downstream The direction of data flow from the host or away from the host. A downstream port is the port on a hub electrically farthest from the host that generates downstream data traffic from the hub. Downstream ports receive upstream data traffic. Upstream The direction of data flow towards the host. An upstream port is the port on a device electrically closest to the host that generates upstream data traffic from the hub. Upstream ports receive downstream data traffic. UPS (Universal Power Supply) The monitor with UPS feature can work in different countries with various mains voltage. RETURN TO TOP OF THE PAGE file:///D|/EDFU/crt_19_5/edoc/english/GLOSSARY/GLOSSARY. HTM (20 of 22)2005-04-21 ¤W¤È 09:33:20 Glossary V Vertical dot pitch See Dot pitch. Vertical scanning frequency Expressed in Hz, this is the number of fields written to the screen every second in interlaced mode. In non-interlaced mode vertical scanning frequency is the number of frames (complete pictures) written to the screen every second (also known as refresh rate). Vertical sync pulses A train of square shaped waveforms that define the start of a new frame. VESA Video Electronic Standards Association, a consortium of manufacturers formed to establish and maintain industry-wide standards for video cards and monitors. VESA was instrumental in the introduction of the Super VGA and Extended VGA video graphics standards (see Video graphics adapters) with a refresh rate of 70 Hz, minimizing flicker and helping to reduce operator eyes fatigue and stress. Video dot rate See Dot rate. Video graphics adapters file:///D|/EDFU/crt_19_5/edoc/english/GLOSSARY/GLOSSARY. HTM (21 of 22)2005-04-21 ¤W¤È 09:33:20 Glossary A card equipped with a character or graphic generator and video memory, which maps to the screen. A microprocessor scans video memory and translates bit information from the computer into displayable video signals for the monitor. [. . . ] 104-33 Bogota, Colombia Phone: (01)-8000-111001 (toll free) Fax : (01)-619-4300/619-4104 MEXICO Consumer Information Centre Norte 45 No. 669 Col. Industrial Vallejo C. P. 02300, -Mexico, D. F. Phone: (05)-3687788 / 9180050462 Fax : (05)-7284272 PARAGUAY Av. Argentina 1780c/ Alfredo Seiferheld P. O. [. . . ]