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The first all-electronic compute, based on vacuum tubes, was developed in 1946 by J. Presper Eckert and John W. Mauchly of the University of Pennsylvania. Atahis computer could make calculation a thousand times faster than earlier devices.” The Macintosh must be running system software version 7.5 or higher and be equipped with a drive that supports Apple PC Exchange. 1 Save your Windows file to a 3.5-inch floppy disk or a CD-ROM.
