Index_U

U

Ultra SCSI, 368

unconditional jumps , 277

undefined opcodes, 278

underflow, numeric, 80

Unicode, 109-10

unidirectional parallel communications, 349

uninitialized storage (BSS) section, 319

union, 147, 185

aliases, 188

on big endian machine, 148

C/C++ declarations, 186

data type, discriminant, 147

discriminant, 185

field offsets in a union, 185

HLA declarations, 187

on little endian machine, 148

memory storage, 187

object disassembly, 189

other uses, 188

in Pascal/Delphi/Kylix, 186

versus a record (struct), 148

unique Boolean functions, 195

universal Boolean function (NAND), 213

Universal Serial Bus. See USB

unnormalized values, 76

unpacking data, 60

unsigned numbers , 24

unstable flip-flop operation, 221

unused bus cycles, 240

up codes on the keyboard, 348

uppercase characters , 105

usage frequency, 267

USB (Universal Serial Bus), 146, 351, 390

audio, 395

bandwidth, 394

client drivers, 395

communications devices, 396

control transmissions, 393

design, 390

device classes, 396

device drivers, 395

enumeration, 395

flash modules, 364

host controller stack, 391

interrupt transfers, 394

isochronous transfers, 395

performance, 392

polling operation on, 394

printer devices, 396

protocol, frames in, 392

round- robin polling on, 392

starvation on, 393

storage devices, 396

transmission types, 393

U.S. Social Security numbers, 60