hacker
hacker crackdown
hacking
half block
half duplex
half router
half word
half-adder
half-card
half-duplex
half-duplex transmission
halftone
half-word
halt
halt dead
handheld computer
hand-held computer
handheld PC
handheld scanner
handling
hand-operated scanner
handset
handshake
handshake failed
handwriting recognition
hard copy
hard disk
hard disk type
hard error
hard failure
hardware
hardware check
hardware compatibility
hardware control
hardware diagnostic
hardware failure
hardware interrupt
hardware key
HDF
HDLC
HDTV
help
Help key
help screen
help window
helper program
helpware
hertz
hex
hexadecimal number system
HFS
hidden character
hidden file
hierarchical computer network
hierarchical database
hierarchical database system
hierarchical file
Hierarchical File System
hierarchical memory system
hierarchy
high definition
high definition TV
High Performance File System
high resolution
high tech