IBM 6400 Maintenance Information Manual page 348

Appendix F
BUD
CA
CC
CCF
CE
CHNG
CIR
CLK
CO
COLL
COMM
CONTLR
CMD
CMX
CNC
CPI
CR
CT
CTL
CTS
CUR
CVO
D0, D1, etc. Data Bit 0, Data Bit 1, etc.
DAT
DC
DCD
DIAG
DIFF
DMA
DP
DPMC
DPU
DRAM
DRV
DRVR
348
Buffered Upper Driver
Cathode
Card Cage
Card Cage Fan
Customer Engineer
Change
Circuit
Clock
Cover Open
Collector
Communication
Controller
Command
Manufacturer's designation of the controller board
Connector, Connection
Characters Per Inch
Carriage Return
Coaxial/Twinaxial
Control
Clear to Send
Current
Cover Open (Switch)
Data
Direct Current, Data Controller (a functional unit of
the CMX controller board)
Data Carrier Detect
Diagnostic
Differential
Direct Memory Access
Data Processing, DataProducts
Dot Plucker Memory Controller
Data Processing Unit
Dynamic Random-Access Memory
Drive or Driver
Driver