 | |
 PS/55 Model 5550-T | |
| Also known as | パーソナルシステム/55 |
|---|---|
| Developer | IBM |
| Manufacturer | IBM Fujisawa (PS/2 line), Matsushita Electric Industrial (5550 line) |
| Type | Professional Computer |
| Release date | 1987 |
| Discontinued | 2001[1] |
| Operating system | Japanese DOS (K3.3 - J5.0) PC DOS (3.3 -) DOS/V OS/2 Windows 3.x |
| Predecessor | IBM 5550 IBM JX |
The Personal System/55 (パーソナルシステム/55) or PS/55 is a personal computer series released from IBM Japan in 1987.
The PS/55 is the successor to IBM 5550 (Multistation 5550), but its architecture is based upon IBM PS/2. The first line-up of the series consisted of rebranded 5550 models except the Model 5570-S which was based on the PS/2 Model 80 (IBM 8580). Unlike the PS/2, most PS/55-based models have a 32-bit (80386 or 80486) CPU and Micro Channel (MCA) bus for the high-end business computing market. IBM Japan was hesitating to sell personal computers for consumers because the IBM JX failed.[2] The AT bus model was released for home users in 1991.
- ^ "マルチステーション、ＰＳ／Ｖ、ＰＳ／２、ＰＳ／５５の一部保守活動中止の発表" [Some model of Multistation, PS/V, PS/2, PS/55 End of Life Announcement] (in Japanese). IBM Japan. 19 November 2008. Retrieved June 7, 2016.
- ^ 戸塚, 正康 (1991). "PS/2とPS/55が誕生". 日本IBMのパソコン新戦略 (in Japanese). 日本工業新聞社. pp. 111–113. ISBN 4-8191-0856-5.