Columbia University Computing History   


The IBM PC/AT, IBM's first fully 16-bit PC, based on the Intel 80286 central processor with a 24-bit address bus allowing access to 16MB RAM, with a built-in 20MB hard disk. Released in 1984 and retired in 1987 in favor of the IBM PS/2. This was regarded by many as the first "serious" PC. It was capable of running different operating systems including MS/PC-DOS, OS/2, PC/IX, SCO Xenix, and early versions of MS Windows.
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Created by Photogallery 3.11 October 1, 2021