data channel
data channel multiplexer
data circuit-terminating equipment (DCE)
data collection
data communication equipment
data communication line
data communications
data communications system
data compression
data concentrator
data conversion
data converter
data definition language (ĐL)
data delimiter
data dictionary
data element
data encryption
data encryption standard
data entry terminal
data exchange
data feedback
data field
data file
data flow
data flow diagram
data format
data formatting
data frame
data generator
data handling unit