D/A converter capable of producing an analog signal having level

Data acquisition circuit

Data bit synchronization

Data bit to constellation symbol mapper

Data burst randomizer

Data bus transceiver

Data circuit for frequency modulating an oscillator

Data circuit-terminating equipment

Data communication apparatus and method with low power standby m

Data communication apparatus having bandwidth selection capabili

Data communication apparatus permitting confidential communicati

Data communication equipment

Data communication equipment

Data communication method and apparatus

Data communication method and apparatus therefor

Data communication process and apparatus for data transmission i

Data communication receiver and method therein for detecting poo

Data communication replicator

Data communication system

Data communication system