Index_D

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D

DACs (Digital-to-Analog Converters), 120, 121, 501

Data Link layer, OSI reference model, 226–227

Database Server, 228

DB-15 connectors, 197–198

DB-25 connectors, 38 (fig.), 40(fig.), 192 (fig.), 194–196

DB-9 connectors, 195–196

DCC (Direct Cable Connection), 444

DDR SDRAM (Double Data Rate SRAM), 85

DEBUG.EXE, 294

Default gateway, 233

DEFRAG command, 293

Defragmentation, 169, 293

Degaussing, 133

DEL command, 289

DELTREE command, 289

DETCRASH.TXT (Win9.x), 309

DETLOG.TXT (Win9.x), 309

Device Manager

resolving IRQ conflicts, 108

Windows 2000, 383–384

Windows 9.x, 316–318

Windows ME, 421

Windows XP, 461

DHCP (Dynamic Host Configuration Protocol), 395, 501

Diagnostics

Diagnostic Startup, Windows XP, 466

utility, Windows NT, 360

Dial-up network

Windows ME, 433

Windows NT, 353–354

Digital cameras, 121–122, 151

DIMMs (Dual Inline Memory Modules)

described, 88, 89, 501

installing, 91–92

sockets, 38 (fig.), 40 (fig.)

DIN keyboard connectors, 41

DIP (Dual In-Line Package) switches, 38 (fig.), 41, 84

DIR command, 289

Direct current (DC), 42

Disk Administrator, Windows NT, 357

Disks

Disk Cleanup, Windows 2000, 391

Disk Cleanup, Windows 9.x, 321–322

Disk Defragmenter, 169

Disk Management tool, Windows 2000, 386–387

DISKCOPY command, 289

mirroring and RAID, 180

quotas, Windows 2000, 388

Display Properties

described, 139, 141

Windows 9.x, 318–319

Windows ME, 418–419

DMA (Direct Memory Address)

channels, 109–110

controllers, 66, 171

defined, 502

DNS (Domain Name System), 233, 238, 395, 502

Docking stations

docked/undocked hardware profile, 393

for laptops, 123–124

Domain

Windows 9.x, 325

Windows NT, 339

DOS

AUTOEXEC.BAT, 95, 280, 283–285

command interpreter, 279

command prompt utilities, 291–294

commands and switches, 288–290

CONFIG.SYS, 95, 280, 281–282

defined, 502

file name structure, 285–288

introduction, 278–279

IO.SYS, 280

memory management utilities, 294–296

MSDOS.SYS, 280–281

system and configuration files, 279–280

using, in Windows ME, 418

Dot matrix printers, 145–146, 152

Dot pitch, 133–135

Dpi (dots per inch), 119, 502

Dr. Watson, 315–316, 421–422

DRAM (Dynamic RAM), 82, 83, 84, 88, 502

Drive mapping, 355–356

Driver Signing

Windows 2000, 384

Windows XP, 461–462

Dry chemical (ABC and BC) fire extinguishers, 46

DSL (Digital Subscriber Line), 242, 245, 502

Dual Address Cycles (DAC), 51

Dual boot systems

Windows 2000, 381–382

Windows ME, 416–417

Windows NT, 342

Windows XP, 459

See also Bootup

Dual homer hosts, 244

DVDs (Digital Versatile Disks), 182, 502

DXDIAG command, 419–420

Dye sublimation printers, 151

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