IBM 5120 Computing System

The IBM 5120 Computing System (sometimes referred to as the IBM 5110 Model 3) was announced in February 1980 as the desktop follow-on to the IBM 5110 Computing System. It featured two built-in 8-inch 1.2 MB floppy disk drives, 9-inch monochrome monitor, BASIC Programming Language, 32K RAM and optional IBM 5114 stand-alone diskette unit with two additional 8-inch 1.2 MB floppy disk drives.