Remembering how Borland Sidekick 1 was effectively magic.

A full PIM including address book, calendar, and scientific calculator at the touch of a keychord, without quitting your current application.

On a DOS system with 640K RAM, and whose CPU didn't even support multitasking. Well before the 386/Windows revolution.

#PCHistory #TSR #NoTheOtherTSR

https://en.wikipedia.org/wiki/Borland_Sidekick