IBM Infoprint 6500-v05 Maintenance Manual page 521

BCOM Buffered Communication
BCP Bi-phase Communications Processor
BHSC Buffered Hammer Shift Clock
BN Buffered, Low True
BNLD Buffered, Low True, Lower Driver
BPS Bits Per Second
BSY Busy
BTU British Thermal Unit
BUD Buffered Upper Driver
CA Cathode
CC Card Cage
CCF Card Cage Fan
CE Customer Engineer
CHNG Change
CIR Circuit
CLK Clock
CO Cover Open
COLL Collector
COMM Communication
CONTLR Controller
CMD Command
CNC Connector, Connection
CPI Characters Per Inch
CR Carriage Return
CT Coaxial/Twinaxial
CTL Control
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