- destructive cursor
- destructive read
- detail card
- detail line
- detail printing
- detailed explanation
- detecting head
- detection
- deterministic
- developer
- developing trough
- development baseline
- development environment
- development time
- developmental tube
- dialer
- dialog
- dialogue box
- dib
- dibit modem
- dictating
- dictation
- die
- dielectric circuit
- dielectric diode
- diffeomorphism
- difference
- difference base
- difference field
- difference interval
- difference module
- difference table
- differentiability
- differential
- differential algebra
- differential amplifier
- differential capacitance
- differential circuit
- differential coefficient
- differential control
- differential derivative
- differential filter
- differential form
- differential group
- differential input
- differential module
- differential operator
- depreciation
- depressed equation
- deregister
- derivate
- derivative document
- derived algebra
- derived complex
- derived group
- derived rule
- descriptive geometry
- descriptive parameter
- descriptor elements
- design center
- desk application
- desk checking
- desktop accessory
- despotic network
- destination drive
- destination file
- detail file
- detail tape
- detailed information
- determinantal
- determinate machine
- deterministic automaton
- deterministic process
- detour
- deuce
- developable
- developing
- development
- development cost
- deviation compensator
- deviation computer
- deviation loss
- device address
- device contention
- device head
- device number
- device object
- device state
- device type
- DFP segment
- diagnostic aid
- diagnostic center
- diagnostic code
- diagnostic diskette
- diagnostic program
- diagnostics
- diagonal border
- diagonal matrix
- diagonal method
- diagonal scale