Macintosh PowerBook Series Introduction at COMDEX '91
Wayne Westly and Bruce Gee demonstrate the line of PowerBooks on October 21, 1991, at the COMDEX computer expo in Las Vegas, Nevada. 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.
These machines caused a stir in the industry with their compact dark grey cases, use of a trackball, and the clever positioning of the keyboard which left room for palmrests on either side of the pointing device. Portable PC computers at the time tended to have the keyboard forward towards the user, with empty space behind it, so this was a surprising innovation and set the standard layout all future notebook computers would follow.
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