Abstract: A remote line printer system is used for printing on a line-by-line printer at a remote location. Data stored in a minicomputer and fed in parallel format from a print port. The minicomputer, which thinks it is driving a local printer, is connected to a microprocessor controlled transmitter which emulates the conventional minicomputer/printer interface. The transmitter includes a serializer which converts character data from parallel to serial for transmission serially to a microprocessor controlled remote receiver via a communications line. At the receiver a deserializer converts serial data into parallel format for printing by a line printer which thinks it is being driven by a local host computer. The system includes retransmission of data in case of error as well as compression of data before transmission and decompression of data before printing.