Computer interfaces 46 Microcomputers 12 Standards 7 Microprocessors 6 Automatic data collection systems 4 Computers 3 Congresses 3 Analog-to-digital converters 2 Computer architecture 2 Computer software 2 Data processing 2 Digital-to-analog converters 2 Interface circuits 2 TRS-80 computers 2 Amateurs' manuals 1 Apple II (Computer) 1 Automatic checkout equipment 1 Automatic test equipment 1 Automation 1 CAD/CAM systems 1 Circuits 1 Computer Systems 1 Computer graphics 1 Computer input-output equipment 1 Computer programming 1 Computer programs 1 Computer simulation 1 Data transmission systems 1 Design and construction 1 Development 1