HAN
home area network
HD
high-density
HD-ROM
high-density read-only memory
HDA
head disk assembly
HDD
hard disk drive
HDLC
High-Level Data Link Control
HDTV
high-definition television
HER
hard error rate
HFC
hybrid fiber/coax
HFS
hierarchical file system
HID
human interface device
HLF
high-level formatting
HMA
high memory area
HP
Hewlett-Packard
HPA
host protected area
HPFS
high performance file system
HPT
high-pressure tin
HRTF
head-related transfer function
HST
High-Speed Technology
HT
hyperthreading
HTML
Hypertext Markup Language
HTTP
Hypertext Transfer Protocol
HVD
high-voltage differential
Hz
Hertz
