REMEMBERING 1977, the year of the 50lb portable computer. Heck, I had a Kaypro4 in the mid-1980s (not one but two floppy drives, and they were double-sided double-density!) and it wasn’t much lighter than that. “The 5100 wasn’t the first personal computer. The MITS Altair beat it to market by a few months. But it was the first portable computer — arguably. Fifty pounds may seem bulky today — and, no you couldn’t use it unless you plugged it into the wall — but the 5100 arrived at a time when most machines were still the size of your desk. If not larger.”

Video at the link, complete with “late-70s business types.”