A printer subsystem is interconnected with a host system from which it receives command and data information and to which it provides status information. The printer subsystem has two microprocessors, one of which communicates with the host system for transfer of command, data, and status signals and...http://www.google.fr/patents/US4452136?utm_source=gb-gplus-shareBrevet US4452136 - Printer subsystem with dual cooperating microprocessors
Printer subsystem with dual cooperating microprocessors
