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".
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 |
| Introductory price | US$299 (equivalent to $840 in 2022) |
| Discontinued | 1985 |
| Operating system | Commodore BASIC 3.5 |
| CPU | MOS Technology 7501 or 8501 @ 1.76 MHz |
| Memory | 64 KB RAM + 32 KB ROM |
| Graphics | TED (320 × 200, 121 colors) |
| Sound | TED (2-channel with 4-octave + white noise) |
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.
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