Commodore Plus/4

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Commodore Plus/4

Commodore Plus/4. Note the four arrow-shaped keys forming the cursor key "diamond" to the right.
Manufacturer	Commodore Business Machines
Type	Home computer
Release date	1984; 40 years ago (1984)
Introductory price	US$299 (equivalent to $880 in 2023)[1]
Discontinued	1985
Operating system	Commodore BASIC 3.5
CPU	MOS Technology 7501 or 8501 @ 1.76 MHz
Memory	64 KB RAM + 64 KB ROM
Graphics	TED (320 × 200, 121 colors)[2]
Sound	TED (2-channel with 4-octave + white noise)

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".^{[citation needed]}

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.