138 - Glossary
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. One million bytes.
Megahertz
1,000,000 cycles per second.
Memory
A repository for data and applications which is readily accessible to your LifeBook notebook’s CPU.
MHz
Megahertz.
MIDI
Musical Instrument Digital Interface. A standard communication protocol for exchange of
information between computers and sound producers such as synthesizers.
Modem
A contraction for MOdulator-DEModulator. The equipment which connects a computer or other data
terminal to a communication line.
Monaural
A system using one channel to process sound from all sources.
