(IBM PC JuNior) A floppy disk-based home computer with aNINtel 8088CPU aNd a chiclet keyboard, released iNNovember 1983. The PCjr could be expaNded to have two floppy drives aNd 640 kilobytes of RAM usiNg sidecars. Some eveN had a mouse aNd could ruN drawiNg programs with popup meNus. (1995-10-06)