Apple LC520 Especificações descarregar pdf (Página 12)

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PREFACE

Here are other abbreviations used in this developer note:

mA milliamperes µs microseconds

µA microamperes ns nanoseconds

MB megabytes sec. seconds

MHz megahertz V volts

mm millimeters W watts

ms milliseconds

Ω

ohms

hexadecimal value

AC alternating current

ADB Apple Desktop Bus

CD-ROM compact-disk read-only memory

CLUT color lookup table

EMI electromagnetic interference

FPU ﬂoating-point unit

IC integrated circuit

I/O input/output

LS low-power Schottky (used as a standard for IC

device loads)

MMU memory management unit

MOS metal-oxide semiconductor

NMI nonmaskable interrupt

PRAM parameter RAM

PWM pulse-width modulation

RAM random-access memory

RMS root-mean-square

ROM read-only memory

SANE Standard Apple Numerics Environment

SCC serial communications controller

SCSI Small Computer System Interface

SIMM single inline memory module

SWIM Super Woz Integrated Machine, a custom IC

that controls the ﬂoppy disk interface

TTL transistor-transistor logic (used as a standard

for IC device loads)

VRAM video RAM

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Apple LC520 Especificações Página 12