Comment by wduquette
"Personally owned computers—microcomputers, in the terminology of the day—were rare and were the domain of a few hobbyists. Most were very small and generally lacked hard drives; bulk storage was via audio cassette tape or (for the lucky few) on floppy disks with a capacity of about 1.5 megabytes."
1.5 megabytes? Um, no. 3.5" floppies weren't out yet in 1979, and they were 1.44MB. 5.25" double-sided high-density floppies were 1.2MB, and I'm not sure they were were out yet either. I was using 8" floppies in 1979, and IIRC they were about 250KB