Specifically, the IRIG-B 74-b serial time code contains 30 b of binary coded decimal
(BCD) time of year data, 17 b of straight binary seconds of day, 9 b for year information, and 18 b for control data.
The units are housed in a full 3U rack chassis with front panel keyboard for manual control, GPIB and parallel binary coded decimal
(BCD) interface for remote programming.
Field data digitized by the SCADA is sent over a RS485 network to the Mauell digital output (DO128) and binary coded decimal
(BCD32) controllers that distribute data to indicating devices across the board.
With the exception of IBM mainframes, which use an 8-bit encoding scheme called EBCDIC (Extended Binary Coded Decimal
Interchange Code), ASCII has become the standard for all data communications and computers.
One such method uses a coded carrier with a set of small magnets that are polarized to show the pallet number in binary coded decimal