Apple Macintosh 512K Microcomputer

This is an example of the Macintosh 512 KB, nicknamed "Fat Mac," introduced in September 1984. It gave users four times as much memory, and allowed them to keep several major programs open simultaneously (for an example of the earlier Macintosh see 1985.0118). The vertical processor case and 9" monochrome screen were distinguishing features of all the early Macintosh line.

The computer is shown in image 91-14187 with Macintosh external drive 1990.0493.01.

The Macintosh 512 KB contained a Motorola 68000 microprocessor which ran at 8 MHz. It contained 512 KB of RAM and 64 KB of ROM and initially had a 400 KB Floppy disk drive. Applications included MacWrite, a word processor, and MacPaint, a drawing program that turned the mouse into a paintbrush. Shortly after the 512 KB appeared, Apple also introduced a LaserWriter printer, which enabled desktop publishing for individuals and small businesses. Over time, Apple computers would appeal most strongly to artists and designers, while the IBM/DOS line of computers sold better in business markets.

After selling hundreds of thousands of units, Apple discontinued the "Mac Classic" line of computers in April 1986.

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