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PowerBook

Series of Apple laptops based on PowerPC and Motorola 68000

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During its lifetime, the PowerBook went through several major revisions and redesigns, often being the first to incorporate features that would later become standard in competing laptops. The PowerBook was replaced by the MacBook Pro in 2006 as part of the Mac transition to Intel processors.

680x0-based models

PowerBook 100 series

In October 1991, Apple released the PowerBook line with the entry-level PowerBook 100, the mid-range PowerBook 140, and the high-end PowerBook 170. The PowerBook line was commercially successful, and its industrial design influenced later notebook computers. The systems featured compact dark gray cases, a built-in trackball, and a keyboard placed toward the back of the case to provide space for palm rests. Many competing portable computers at the time retained forward-mounted keyboards with empty space behind them, often used for function key reference cards, and some required external clip-on trackballs. As graphical user interfaces replaced command-line interfaces, the PowerBook's arrangement became the standard layout for later notebook computers.

The cases for the PowerBook 140 and 170 were designed by Apple, while the PowerBook 100 was designed by Sony, which used Apple's schematics for the Macintosh Portable and miniaturized its components.

The 100 series PowerBooks were intended to tie into the rest of the Apple desktop products utilizing the corporate Snow White design language incorporated into all product designs since 1986. Unlike the Macintosh Portable, however, which was essentially a battery-powered desktop in weight and size, the light colors and decorative recessed lines did not seem appropriate for the scaled-down designs. In addition to adopting a darker grey color scheme that coordinated with the official corporate look, they also adopted a raised series of ridges mimicking the indented lines on the desktops. The innovative look not only unified their entire product line, but set Apple apart in the marketplace. These early series would be the last to utilize the aging Snow White look, with the 190 adopting a new look along with the introduction of the 500 series.

The first series of PowerBooks were hugely successful, capturing 40% of all laptop sales. However, the original team left to work at Compaq. When attempting to increase processing power, Apple was hampered by the overheating problems of the 68040; this resulted in the 100-series PowerBook being stuck with the aging 68030, which could not compete with newer-generation Intel 80486-based PC laptops introduced in 1994. 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 original PowerBook 100, 140, and 170 were replaced by the 145 (updated to the 145B in 1993), 160, and 180 in 1992. The 160 and 180 have video output, allowing them to drive an external monitor.

In 1993, the PowerBook 165c was the first PowerBook with a color screen, later followed by the 180c. In 1994, the last true member of the 100-series form factor introduced was the PowerBook 150, targeted at value-minded consumers and students.

The PowerBook 190, released in 1995, bears no resemblance to the rest of the PowerBook 100 series, and is in fact simply a Motorola 68LC040-based version of the PowerBook 5300 (and the last Macintosh model to utilize a Motorola 68k-family processor).

PowerBook Duo

In 1992, Apple released a hybrid portable/desktop computer, the PowerBook Duo, continuing to streamline the subnotebook features introduced with the PowerBook 100. The Duos were a series of very thin and lightweight laptops with a minimum of features, which could be inserted into a docking station to provide the system with extra video memory, storage space, connectors, and could be connected to a monitor.

PowerBook 500 series

1994 saw the introduction of the Motorola 68LC040-based PowerBook 500 series, code-named Blackbird. These models of PowerBooks were much sleeker and faster than the 100 series, which they replaced as the mid and high-end models. The 500 series featured DSTN (520) or active-matrix LCD displays (540 and 550), stereo speakers, and was the first computer to use a trackpad (although a similar technology had been included on the pioneering Gavilan SC 11 years earlier); it was also the first portable computer to offer built-in Ethernet networking. The PowerBook 500 series was the mainstay of the product line until the PowerBook 5300. The 500 series was the first PowerBook to feature PCMCIA slots, although this was an optional feature that required the user to sacrifice one of the two available battery slots to house the PCMCIA expansion cage.

The PowerBook 500 series was released as Apple was already moving its desktop machines to the PowerPC processor range, and a future upgrade was promised from the start. This came in 1995, as an Apple Motherboard containing a 100 MHz 603e processor and 8 MB of RAM (which snapped into a slot containing the previous 25 or 33 MHz 68040 processor and the 4 MB of RAM on the previous daughterboard). At the same time Newer Technology offered an Apple-authorized 117 MHz Motherboard, which was more popular than the Apple product, and optionally came without any RAM. The company later offered 167 MHz and 183 MHz upgrades containing more memory and onboard cache memory to improve performance. Nonetheless, the internal architecture of the 500 series meant that the speed increase provided by the 100 and 117 MHz upgrades was, for most users, relatively small.

The 500 series was completely discontinued upon the introduction of its replacement the PPC-based PowerBook 5300, with the PowerBook 190 replacing the 500 as the only 68LC040 PowerBook Apple offered.

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