since 1984 (earliest usage recorded on this site was 1985)
The Macintosh 512K Personal Computer, also known as the "Fat Mac", is the second of a long line of Apple Macintosh computers, was the first update to the original Macintosh 128K. It was virtually identical to the previous Mac, differing primarily in the amount of built-in memory (RAM), which quadrupled the original's.
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