PowerBook 520c (1994)

The Macintosh PowerBook 520c featured a 25 MHz 68LC040 processor, 4 MB or 12 MB of RAM, and a 160 MB, 240 MB, or 320 MB hard drive. The screen was a 9.5-inch color dual-scan display.

The PowerBook 500 series laptops introduced the “trackpad” to the Macintosh: the cursor followed the movement of your finger on a pad rather than spinning a plastic trackball with your finger. The trackpad has proven to be a revolutionary input device and has been used since in most notebooks. The PowerBook 500 series also introduced the idea of dual-swappable bays that could be used to hold either one battery and a PCMCIA adapter or two batteries.

Source: EveryMac.com

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