Terminal device having closed chamber communications between functional units

摘要: A data processing terminal device includes a substantially enclosed optical chamber which serves as wireless communication "bus" between pluggable functional units such controller unit, printer units, display etc. Each unit transducer having an emitter component for injecting energy into the cavity and detector sensing injected by transducers of other units. The distribution within is shaped elliptic parabolic reflectors, preferably molded integrally with floor structure.