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MAC    音標拼音: [m'æk]
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mac
n 1: a waterproof raincoat made of rubberized fabric [synonym:
{macintosh}, {mackintosh}, {mac}, {mack}]

mac \mac\ n.
Shortened form of {mackintosh}, a waterproof raincoat made of
rubberized fabric.

Syn: mackintosh, mac, mack.
[WordNet 1.5]


Mac \Mac\ prop. n.
Shortened form of {Macintosh}, a brand name for a personal
computer; as, the latest Mac has great new features.
[PJC]


Mac \Mac\ [Gael., son.]
A prefix, in names of Scotch origin, signifying son.
[1913 Webster]

The line of computers manufactured by {Apple Inc}.
"Mac" is not primarily a nickname or an abbreviation, but a
brand name and trademark in its own right. Apple currently
(2009) refer to the brand as any of "Mac", "iMac" or
"Macintosh" (all registered trademarks).

The Mac was Apple's successor to the {Lisa}. The project was
proposed by {Jef Raskin} some time before {Steve Jobs}'s
famous visit to {Xerox PARC}. Jobs tried to scuttle the
Macintosh project and only joined it later because he wasn't
trusted to manage the {Lisa} project.

The {Macintosh user interface} was notable for popularising
the {graphical user interface}, with its easy to learn and
easy to use {desktop} metaphor.

The first Macintosh, introduced in January 1984, had a
{Motorola 68000} {CPU}, 128K of {RAM}, a small {monochrome}
screen, and one built-in {floppy disk} drive with an external
slot for one more, two {serial ports} and a four-voice sound
generator. This was all housed in one small plastic case,
including the screen. When more memory was available later in
the year, a 512K Macintosh was nicknamed the "Fat Mac."

The Mac Plus (January 1986) added expandability by providing
an external {SCSI} port for connecting {hard disks}, {magnetic
tape}, and other high-speed devices.

The Mac SE (March 1987) had up to four megabytes of {RAM}, an
optional built-in 20 megabyte hard disk and one internal
expansion slot for connecting a third-party device.

The Mac II (March 1987) used the faster {Motorola 68020} {CPU}
with a 32-bit {bus}.

In 1994 the {Power Mac} was launched, and in 1999 the {iMac}
was introduced. The {SuperDrive} appeared in the iMac in 2002.

The {Macintosh Operating System} is now officially called "Mac
OS". Mac OS X is the successor to Mac OS 9, although its
technological parent is the {NEXTSTEP} OS from {Next, Inc.},
founded by Steve Jobs after he left Apple the first time. OS
X is based largely on the {BSD} UNIX system. The core of the
OS X operating system is released as free {source code} under
the project name {Darwin}.

The standard Macintosh screen {resolution} is 72 {dpi} (making
one {point} = one {pixel}), exactly half the 144 dpi
resolution of the ancient {Apple Imagewriter} {dot matrix}
printer.

If "Macintosh" were an acronym, some say it would stand for
"Many Applications Crash, If Not, The Operating System Hangs".
While this was true for pre Mac OS 9 systems, it is less true
for Mac OS 9, and totally incorrect for Mac OS X, which has
protected memory, so even if one application crashes, the
system and other applications are unaffected.

See also {Macintosh file system}, {Macintosh user interface}.

{Apple Home (http://apple.com/mac)}.

(2009-05-05)

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