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Unusual keyboard for high-speed typing, requiring a long training period. The model is from about 1989. It connects to the keyboard port of a PC/AT using a special adapter cable.

Graphic on the evolution of Apple Macintosh computers since January 24, 1984, when the first Mac was introduced. Includes charts on Mac unit sales and revenues.

Looking for a helpful new app? We've got you covered! Here are the best free iOS and Android apps starting with each letter of the alphabet.

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