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Glossary
Log-On The status in which the user can access a network or computer system. Also referred to as “log
in”.
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MAC Address A unique number allocated to each device (network card, built-in wireless LAN module, etc.)
used on a network. Displayed in a format such as “00:11:22:AA: BB:CC”. This number is
allocated in advance by the device manufacturer. No two devices have the same number. On
Windows XP, this is displayed as the “Physical Address”.
z How to confirm the MAC Address on this computer: Î page 172
Memory A device for storing data on a computer. There are two types of memory – RAM and ROM –
but usually, this refers to RAM. RAM (whose contents can be rewritten) is used for the main
memory, or the cache memory. ROM (whose contents cannot be rewritten) is used for BIOS
and other systems.
Menu Bar The segment at the top of the window below the title bar (Î page 209), where software
functions are displayed. Common menus include “File”, “Edit” and “View”.
MP3 A file format that enables music to be played on a computer, using technology that compresses
music data to about 1/10th its original size, with very little negative effect on sound quality.
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