Computer Systems

A400 "Cooler" Cabinet

1000, L/A Series Selection:

Name: 1000 A400
Product Number: 2134A
Introduced: 1986
Division: Data Systems
Original Price: $9500
Catalog Reference: 1988, page 654
Donated by: Carl Cristini Qenos, Altona Victoria


The A400 was the new low end of the A-Series when it was introduced in late 1986. The CPU of the A400 was contained on a single PCB, which also contained an integrated 4-port MUX and 0.5 MB of RAM. The A400 had the same execution performance as the A600+ at 0.4 MIPS.

The A-Series computers shared some basic form factors. All of these computers came in a standard 19-inch rack mount box that could accommodate 20 expansion cards. In 1983, HP introduced its “Micro” form factor. The MICRO/1000 was a 14-slot box that could be mounted vertically as a rolling pedestal or mounted horizontally in a standard 19-inch rack. All A-Series were available in the MICRO/1000 format. In 1987, HP introduced its Micro 14/16 form factor for the A400 and A600+. This 6-slot “Cooler” box could operate in warmer environments (up to 60 degrees C) and shared the same classic industrial design as the 300 Series computers. The A700 and A900 were not made available in the "Cooler" form factor.

The Washington State-based company Strobe makes new classic HP-1000 (21-MX and A-Series) hardware as well as DEC-compatible hardware.

A bootable disc image of the latest software for this computer can be found here.

Collector's Notes:

As of 2014, all three 1000/A400s at the museum were fully functional.

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