The IBM 5120 Computing System is a 16-bit microcomputer developed by IBM and released in February 1980. Marketed as the desktop follow-on to the portable IBM 5110 Computing System, it featured two built-in 8-inch 1.2 MB floppy disk drives, an integrated 9-inch monochrome monitor, 32 KB RAM, plus an optional IBM 5114 stand-alone diskette unit with two additional 8-inch 1.2 MB floppy disk drives.

The System/23 Datamaster is an 8-bit microcomputer developed by IBM. Released in July 1981, the Datamaster was the least expensive IBM computer until the far less expensive and far more popular IBM PC was announced in the following month.