System for the programmed flashing of warning lights
System for transferring data between central units and controlle
System for transmitting airport weather information
System for transmitting operating condition data from a passive
System for unattended printing
System for verifying credit status
System to effect digital encoding of an image
System to render constant the probability of false alarm in rada
Systems for comparing and ranking a plurality of signal inputs
Systems for recognizing printed characters
Systems for recognizing printed characters
Systems using lattice arrays of interactive elements