6/29/2023 0 Comments Used mac powerbook proThe PowerBook 140 and 170 were the original PowerBook designs, while the PowerBook 100 was the result of Apple having sent the schematics of the Mac Portable to Sony, who miniaturized the components. As usage of DOS gave way to the graphical user interface, the PowerBook's arrangement became the standard layout all future notebook computers would follow. In the early days of Microsoft Windows, many notebooks came with a clip on trackball that fit on the edge of the keyboard molding. Portable PC computers at the time were still oriented toward DOS, and tended to have the keyboard forward towards the user, with empty space behind it that was often used for function key reference cards. These machines caused a stir in the industry with their compact dark grey cases, built-in trackball, and the innovative positioning of the keyboard that left room for palmrests on either side of the pointing device. In October 1991, Apple released the first three PowerBooks: the low-end PowerBook 100, the more powerful PowerBook 140, and the high end PowerBook 170, the only one with an active matrix display.
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