Abstract: A multiplexor is designed to receive data from a plurality of data sources. As the multiplexor receives data from data sources, its programmable logic device codes each stream of data with a header and a footer and a data stream segment between them having a prescribed number of characters. A message from any particular data source may be coded into a plurality of separate data stream segments. The multiplexor sequences to the next data source when a data stream having the prescribed number of bytes has been captured and returns to that data source only after data streams of the same prescribed number of characters have been captured from the other data sources in a sequential manner. Data so coded is forwarded to a storage device that may store the data on any suitable storage medium for later retrieval.

Abstract: A multiplexor is designed to receive data from a plurality of data sources. As the multiplexor receives data from data sources, its programmable logic device codes each stream of data with a header and a footer and a data stream segment between them having a prescribed number of characters. A message from any particular data source may be coded into a plurality of separate data stream segments. The multiplexor sequences to the next data source when a data stream having the prescribed number of bytes has been captured and returns to that data source only after data streams of the same prescribed number of characters have been captured from the other data sources in a sequential manner. Data so coded is forwarded to a storage device that may store the data on any suitable storage medium for later retrieval.

Abstract: A key operated rotary core cylinder lock having rotary disc tumblers arranged in a pack with intervening spacer members within a rotary core sleeve normally held against rotation within the lock casing by a locking bar which spans the shear line between the disc tumbler peripheries and the confronting wall of the rotary core sleeve or shell. Gates are provided in the disc tumblers to be aligned by an appropriate key with the locking bar for releasing the plug for rotation, and the spacer members are of a truncated triangular cross-sectional configuration having rounded corners bearing against and positioned by the cylindrical bore in the core sleeve and have flat side portions between the rounded corners and larger radius center openings than the radii of the key openings in the disc tumblers to provide spaces for accommodating foreign matter contaminants. Exposed shackle padlocks incorporating such rotary core cylinder lock components are also disclosed.