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It was the first PowerBook series to use a Motorola 68LC040 CPU (simultaneous with Duo 280) and be upgradeable to the PowerPC architecture via a swap-out CPU daughter card (with the PowerPC and 68040 upgrades for sale), use 9.5-inch displays, 16-bit stereo sound with stereo speakers, have an expansion bay, PC Card capability, two battery bays ...
The Motorola 68040 ("sixty-eight-oh-forty") is a 32-bit microprocessor in the Motorola 68000 series, released in 1990. [2] It is the successor to the 68030 and is followed by the 68060, skipping the 68050. In keeping with general Motorola naming, the 68040 is often referred to as simply the '040 (pronounced oh-four-oh or oh-forty).
For several years, new PowerBook and PowerBook Duo computers were introduced that featured incremental improvements, including color screens, but by mid-decade, most other companies had copied the majority of the PowerBook's features. Apple was unable to ship a 68040-equipped PowerBook until the PowerBook 500 series in 1994.
The Motorola 68040 has improved per-clock performance compared to the 68030, as well as larger instruction and data caches, and was the first Mac processor with an integrated floating-point unit. The MC68LC040 version was less expensive because it omitted the floating-point unit.
The 190 was the de facto replacement for the PowerBook 500 series, which was completely discontinued with the introduction of the 5300 and the only 68040-based PowerBook Apple offered. Sales figures for the 190 are unavailable, but in any event it did not suffer from reports of "exploding battery syndrome," where the similar 5300 factory ...
One was the departure of the original PowerBook team to work at Compaq. [2] [failed verification] Another was that Apple's plans to move on from the 68000 and 68030 CPUs were thwarted by overheating problems with the 68040. The 100-series PowerBook were stuck with chips that could not compete with Intel 80486-based PC laptops introduced in 1994 ...
The PowerBook Duo is a line of subnotebooks manufactured and sold by Apple Computer from 1992 until 1997 as a more compact companion to the PowerBook line. Improving upon the PowerBook 100 's portability (its immediate predecessor and Apple's third-smallest laptop), the Duo came in seven different models.
The PowerBook Duo 230 is a subnotebook personal computer introduced on October 19, 1992 by Apple Computer, Inc. Priced at US $ 2,610, the PowerBook Duo 230 was the high end model of the two simultaneously released PowerBook Duos , the lower end being the US $2,250 PowerBook Duo 210 .