- JIS
- job catalog
- job input
- job mix
- job number
- job processing
- job stacking
- job swapping
- join communications
- join test
- joint
- joint sufficiency
- joint test
- joker
- Josephson equation
- journal
- journal code
- journal entry
- journal file
- judge
- judgment sample
- Jughead
- jump address
- jump backward
- jump cut
- jump statement
- jumper option
- jumper pin
- junction filter
- junction gate
- justify
- juxtaposition
- kana
- kanji support
- keep
- kelvin solid
- kernel parameter
- key
- key address
- key assignment
- key board
- key component
- key disk
- key entry
- key file
- key frame
- key recovery
- key value
- keyboard buffer
- keyboard device
- keyboard lockout
- keyboard mask
- keyboard overlay
- keyboard scan
- keyboard shifts
- keyboard speed
- keyed access
- keyed sequence
- keying error
- keying sequence
- keystone distortion
- keyswitch
- keyword operand
- kick off
- kilowatt-hour
- kinomatic chamber
- Kiviat graph
- knee rafter
- kanji code
- kappa curve
- Karnaugh map
- keen point
- kermit
- kernel dump
- kernel mode
- key access
- key bar
- key binding
- key change
- key compression
- key depression
- key distribution
- key feature
- key grabbing
- key industry
- key matching
- key perforator
- key punch
- key sequence
- key sort
- key system
- key technology
- key transformation
- keyboard controller
- keyboard enhancer
- keyboard help
- keyboard macro
- keyboard number
- keyboard printer
- keyboard send