Keep in mind this is the Macintosh. Apple started selling its first computers years before (I believe 1977; maybe earlier out of a garage) with the Apple II series. Data was stored on a cassette tape drive. The IBM PC did not come out until Aug., 1981! Back then a massive amount of RAM was 16k. There were no hard drives -- Seagate remedied this fairly quickly with its 5Mb hard drive. Floppy disks were actually floppy and held 360k. And CPU chip speed was 8.3 Mhz.