IBM PS/1 (2011)

In 1990, IBM returned to the home market, five years after its previous attempt with the IBM PCjr.
The name PS/1 suggested that it was a more limited line than its previous PS/2.
The 2011 model was the first in a line of PS/1s that would be produced until 1994, when they were replaced by the IBM Aptiva.
Its processors evolved from the 286 to the 486, and its memory would also progressively increase.

Technical specifications of computer IBM PS/1 (2011)

Manufactured by: IBM
Launched: 1990
CPU: Intel 80286 @ 10MHz
Memory: 512 KB
Hard drive:
Operating system: PC DOS 4.01
Innovations: Unlike the innovative PS/2, this was a low-cost model that used common technologies used by all manufacturers of the time, such as the ISA bus, the VGA standard, or the IDE disk connection.

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Contemporary computers of IBM PS/1 (2011)

Amstrad 6128 plus

Manufacturer: Amstrad
CPU: Zilog Z80 @ 4 MHz

Innovations: It improved upon the Amstrad 6128 in terms of graphics, increasing the palette to 4,096 colors, of which 31 could be displayed simultaneously on screen, and adding support for managing sprites.
It also incorporated DMA in the audio department.

The upgrade to the Amstrad 6128 model, which was only on the market for three months.
Compared to its competitors in the 1990 market (the Atari ST and the Commodore Amiga), its 8-bit processor was already outdated.

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Inves PC-Sistema 32

Manufacturer: Inves
CPU: Intel 80386 @ 20 MHz

Inves sold these bulky computers as multi-user workstations with a UNIX operating system, with clock speeds of 20 or 25 MHz.

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