A parallel interface for connecting data processing devices to one another or to peripheral devices, particularly a personal computer to a printer, has at least two status information lines, disconnectable line drivers and control lines (SLCT, SLCTIN), the beginning of the data transmission being signaled...http://www.google.fr/patents/US5555440?utm_source=gb-gplus-shareBrevet US5555440 - Parallel interface for connecting data processing devices to one another over bidirectional control lines
Parallel interface for connecting data processing devices to one another ...
