Commodore Plus/4 The Commodore Plus/4 is a home computer released by Commodore International in 1984. The "Plus/4" name refers to the four-application ROM-resident office suite (word processor, spreadsheet, database, and graphing); it was billed as "the productivity computer with software built in". Internally, the Plus/4 shared the same basic architecture as the lower-end Commodore 16 and 116 models, and was able to use software and peripherals designed for them. The Plus/4 was incompatible with the Commodore 64's software and some of its hardware. Although the Commodore 64 was more established, the Plus/4 was aimed at the more business-oriented part of the personal computer market. Commodore 1984 1984 1984 Computer 3-4 5891AE BBAD93 968971 FD4120 00A0C6 Dator