SIMIS
Microcomputer Systems for the Operation of Railroad Signaling Units, Comprised of Input Signal Converters, Clock Pulse Generators, Comparators, Voltage Regulators, Memories, Checking Pulses, Checking Amplifiers, Signals and Switches, and Computer Programs, Recorded on Tapes, Disks or Cards
Cancelled · January 4, 1983 · 73406827 ·