Apple iMac Instrukcja Użytkownika Pobierz pdf (Strona 71)

APPENDIX A

Abbreviations

NMI nonmaskable interrupt

NV-RAM nonvolatile random-access memory

OHCI Open Host Controller Interface

OS operating system

PCI Peripheral Component Interconnect, an industry-standard

expansion bus

PLL phase-locked loop

POST power-on self test

RAM random-access memory

RAID random array of inexpensive disks

RCA Radio Corporation of America

rms root mean square

ROM read-only memory

RTAS run-time abstraction services

SCC Serial Communications Controller

SCSI Small Computer System Interface

SDRAM synchronous dynamic RAM

SGRAM synchronous graphics RAM; used for display buffers

SNR signal to noise ratio

SO-DIMM small outline dual inline memory module

SPD Serial Presence Detect, a feature of the SO DIMM

USB Universal Serial Bus, an industry-standard

expansion bus

VCC positive supply voltage (voltage for collectors)

VIA versatile interface adapter

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Apple iMac Instrukcja Użytkownika Strona 71