IBM PS/55
< IBM PS
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 |
| 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. The AT bus model was released for home users in 1991.