Laptop User Manual

User’s Manual Glossary-1
L550/L550D/L555/L555D
Glossary
The terms in this glossary cover topics related to this manual.
Alternate naming is included for reference.
Abbreviations
AACS: advanced access content system
AC: Alternating current
ACPI: Advanced Configuration and Power Interface
ASCII: American Standard Code for Information Interchange
BIOS: basic input/output system
bps: bits per second
CD: compact disc
CD-ROM: Compact Disc Read-Only Memory
CD-RW: Compact Disc-ReWritable
CMOS: complementary metal-oxide semiconductor
CPU: central processing unit
CRT: cathode ray tube
DC: direct current
DDC: display data channel
DDR: double data rate
DIMM: dual inline memory module
DVD: digital versatile disc
DVD-R: Digital Versatile Disc Recordable
DVD-RAM: Digital Versatile Disc Random Access Memory
DVD-R (Dual Layer): Digital Versatile Disc Recordable Dual Layer
DVD-ROM: Digital Versatile Disc Read Only Memory
DVD-RW: Digital Versatile Disc ReWritable
DVD+R (Double Layer): Digital Versatile Disc Recordable Double Layer
FDD: floppy diskette drive
FHD: Full High Definition
FIR: fast infrared