Today I learned of the acoustic coupler, a device used by the first personal computer (like the Apple II) to tranfer data per telephone. It is still used in areas where electrical access to the telephone network is illegal as well as by TDDs of deaf person! en.wikipedia.org/wiki/Aco…
Today I learned about the Osborne 1, the first commercially successful portable microcomputer. Released in 1981, it weighed nearly 25 pounds, had to be plugged into the wall and cost $1,795 (or roughly $5,000 in today's dollars). en.wikipedia.org/wiki/Osb…
Until the invention of the wall outlet, people had plug their electric appliances into an empty light bulb socket. illumin.usc.edu/122/a-pow…

Please note that this site uses cookies to personalise content and adverts, to provide social media features, and to analyse web traffic. Click here for more information.