Few people have heard of it, yet many consider John Blankenbaker's KENBAK-1 to be the first commercial personal computer.

Koss introduced these headphones over 40 years ago, and they remain affordable favorites to this day.

HP-01 LED Calculator Watch Still For Sale

It works!
This incredible Hewlett-Packard HP-01 LED calculator watch was just relisted on eBay after the previous $1500 high bid didn't meet reserve. Be warned it has "moderate signs of wear on face and bracelet. Has some scratches on red time screen and also has one damaged corner at red crystal."

On the upside, it includes the original manual, pen stylus (how else would you punch those tiny buttons?) and new batteries. I think I'll stick with my $25 Casio.

Hewlett-Packard HP-01 1977 LED Calculator watch


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