Back in the old days, you know, when I was actually a young man with hopes and dreams I worked with a number of what were at that time "cutting edge" examples of computing equipment.
Of those, The Osborne 1 hit the scene about in my third year working as a computer "professional" and was the first really successful example of portable microcomputing for the common person.
It had the characteristics of the old Compaq "luggable" like the tiny screen and dual floppy drives and was considerably less costly than my first IBM PC ... 1800$US compared to 5K$US for equally capable equipment !
It shipped with the CP/M operating system and a bundle of applications which made it exquisitely useful upon arrival and it represents a kinder, simpler time in technology with the cut throat nature of business only evolving with the success of Microsoft and their windoze product.
Alas, I found it to be rather quickly supplanted by the Kaypro which was a similar "cannister" configuration capped with a keyboard covering the drives and screen ... only the Kaypro's screen was larger (a FULL nine inches) and it was certainly a force with which to be reckoned with in those days when peripherals were the size of refrigerators and the bits were a mere 8 to 16.
Contrast this with the 64 and up we have today.
The Osborne 1 in all it's glory was unveiled to the world at the West Coast Computer Faire in San Francisco on this day in 1981 and remains one of those hallmarks in the timeline of personal computing regardless of the trivial provisioning it possessed compared to nowadays.
It was a goodie and the portends of all the wonders to come back when coding was coding and not drag and drop "objects" in some IDE — monitors were large screen devices and not some LCD/LED thin film transistor monstrosity — and phones were not the primary computing devices owned by the masses who can't reallty fathom technological innovation unless it's something stolen from someone else and marketed as such.