bus, 5-24
communications equipment, 7-1, 7-28
display, 1-3, 8-17, 8-21, 8-23
entry, 8-17, 8-21, 8-23
external function, 7-1
gathering, 1-2
input acknowledge, 7-33
input request, 7-33
lines, 7-33
message framed, 7-29
process, 1-2
routing circuits, 4-12
sequence of events, input, 7-33
strobe, 7-32
synchronous, 7-28
terminal equipment, 7-1,7-28
transfer, 7-36
types/formats, 4-24
words, 7-8
Data conversion devices, 13-1
Data encoding methods, disk, 10-25
frequency modulation, 10-26
modified frequency modulation (MFM), 10-26
run length limited (RLL), 10-26
Data organization
CD-ROM, 11-2
disk, 10-3
tape, 9-8
DC amplifiers, 4-21
DCE/DTE serial I/O cable signals, 7-29
Decision-making functions, 4-11
Demultiplexer, 4-14
Designators, 8-7
Desktop systems, 1-9
Destructive readout, 6-2
Detection/correction, error bit, 6-8
Devices, protection, 3-2,4-29
Diagnostics
mainframe computer, 8-24
microcomputer, 8-18, 8-19
minicomputer, 8-21
ROM, 8-18
tape, 9-20
testing, 5-18
Diagrams, functional block, 2-2
Digit drivers, 6-20
Digital ICs, 4-7
convention, 4-8
functional uses, 4-11
groups, 4-9
logic circuits, 4-9, 4-10
logic gates, 4-8,4-9
Digital fire control switchboard (DFCS), 13-26
Digital switchboards, 13-25
manual switchboards, 13-25
remotely controlled switchboards, 13-26
Digital-to-analog
conversion, 13-7
converter, CV-25lB/UYK, 13-8
Digital-to-digital (D/D) conversion, 13-13
Digital-to-linear/scalar conversion, 13-8
DIP switches, 8-16
Direct
interface, 7-14
memory access, 7-16
memory interface (DMI) bus, 5-26
operand addressing, 8-10
Directories, disk
root directory, 10-5
subdirectories, 10-5
Disk magnetic— see magnetic disk
INDEX-4
Display, 3-2
control units, 3-9
data, 1-3
drivers, 4-21
operator controls, 3-1
Disseminate data, 1-3
DIX, Ethernet, 7-25
Double-length instructions, 8-13
Double word, 4-25
DRAM, 6-24
Drivers
digit, 6-20
display, 4-21
integrated circuits, 4-19
line, 7-21
memory, 4-21
peripheral, 4-21
Dual-channel operating mode, 7-11
Dynamic RAM (DRAM), 6-24
E
EF sequence of events, 7-34
EFA, 7-33
EFR, 7-33
