Glossary
ac
Alternating current.
CD–ROM
Compact disc read-only memory.
CPU
Central processing unit. The main unit of a computer containing the circuits
that control the interpretation and execution of instructions. The CPU holds
the main storage, arithmetic unit, and special registers.
dc
Direct current.
ESD
Electrostatic discharge.
Ethernet
A type of local area network (LAN) based on carrier sense multiple access with
collision detection (CSMA/DC).
FDI
Floppy diskette interface.
FRU
Field replaceable unit.
ground
A voltage reference in a system that has a zero voltage potential.
Glossary–1