Fujitsu FPCM20654 User Guide - Page 85

Glossary IEEE802.11a One of the wireless LAN standards prescribed by the 802 committee in charge of establishing standards of LAN technology in IEEE (Institute of Electrical and Electronic Engineers). This standard allows communications at the maximum speed of 54 Mbps by using a 5 GHz band which can freely be used without radio communication license. IEEE802.11b One of the wireless LAN standards prescribed by 802 committee in charge of establishing standards of LAN technology in IEEE (Institute of Electrical and Electronic Engineers). It allows communications at the maximum speed of 11 Mbps by a band of 2.4 GHz (ISM band) which can freely be used without radio communication license. IEEE802.11g One of the wireless LAN standards prescribed by 802 committee in charge of establishing standards of LAN technology in IEEE (Institute of Electrical and Electronic Engineers). It allows communications at the maximum speed of 54 Mbps by a band of 2.4 GHz (ISM band) which can freely be used without radio communication license. Infrared Light just beyond the red portion of the visible light spectrum which is invisible to humans. Infrastructure A designation of Wireless LAN network configurations. It indicates a form of communication using an Access Point. IP Address An address used for computers to communicate in the TCP/IP environment. Current IPv4 (version 4) uses four values in the range between 1 and 255. (Example: 192.168.100.123). There are two types of IP address: global address and private address. The global address is an only address in the world. It is controlled by JPNIC (Japan Network Information Center). A private address is an only address in the closed network. IR An abbreviation for infrared. IrDA Infrared Data Association. An organization which produces standards for communication using infrared as the carrier. IRQ Interrupt Request An acronym for the hardware signal to the CPU that an external event has occurred which needs to be processed. KB Kilobyte. LAN Local Area Network An interconnection of computers and peripherals within a single limited geographic location which can pass programs and data amongst themselves. LCD Liquid Crystal Display A type of display which makes images by controlling the orientation of crystals in a crystalline liquid. Lithium ion Battery A type of rechargeable battery which has a high powertime life for its size and is not subject to the memory effect as Nickel Cadmium batteries. LPT Port Line Printer Port. A way of referring to parallel interface ports because historically line printers were the first and latter the most common device connected to parallel ports. MAC Address Media Access Control Address A unique physical address of a network card. For Ethernet, the first three bytes are used as the vendor code, controlled and assigned by IEEE. The remaining three bytes are controlled by each vendor (preventing overlap), therefore, every Ethernet card is given a unique physical address in the world, being assigned with a different address from other cards. For Ethernet, frames are sent and received based on this address. MB Megabyte. Megahertz 1,000,000 cycles per second. Memory A repository for data and applications which is readily accessible to your notebook/Tablet PC's CPU. MHz Megahertz. 79