Models
The first computers to be part of the Macintosh Quadra series were the Quadra 700 and Quadra 900, both introduced in 1991 with a Central processing unit (CPU) speed of 25 MHz. The 700 was a compact model using the same case dimensions as the Macintosh IIci, with a Processor Direct Slot (PDS) expansion slot, while the latter was a newly designed tower case with five NuBus expansion slots and one PDS slot. The 900 was replaced in 1992 with the Quadra 950, with a CPU speed of 33 MHz. The line was joined by a number of "800-series" machines in a new minitower case design, starting with the Quadra 800, and the "600-series" pizza box desktop cases with the Quadra 610.
In 1993 the Quadra AV series was released, consisting of the 800-series Quadra 840AV and the 600-series Quadra 660AV, at 40 MHz and 25 MHz respectively. Both included an AT&T Digital signal processor and S-Video and composite video input and output ports for video, as well as CD-quality microphone and audio output ports. The AV models also introduced PlainTalk, consisting of the text-to-speech software MacinTalk Pro and speech control (although not dictation). However all of these features were poorly supported in software, and DSP was not installed in later AV Macs.
Read more about this topic: Macintosh Quadra
Famous quotes containing the word models:
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—Marshall McLuhan (1911–1980)
“The greatest and truest models for all orators ... is Demosthenes. One who has not studied deeply and constantly all the great speeches of the great Athenian, is not prepared to speak in public. Only as the constant companion of Demosthenes, Burke, Fox, Canning and Webster, can we hope to become orators.”
—Woodrow Wilson (1856–1924)
“Grandparents can be role models about areas that may not be significant to young children directly but that can teach them about patience and courage when we are ill, or handicapped by problems of aging. Our attitudes toward retirement, marriage, recreation, even our feelings about death and dying may make much more of an impression than we realize.”
—Eda Le Shan (20th century)