Seiko Advert - January 1984
From Personal Computer World
Seiko: Where fools rush in - we made sure...
Perhaps more famous for its digital watches, Seiko had its own Business Computers line and launched this - the Series 8600 - in 1983.
It ran on an 5MHz Intel 8086 CPU and came with the option of at least five operatings systems - CP/M-86, MP/M-86, MS-DOS, OASIS16 and UNIDOL[1].
The availability of MP/M-86, together with its design, meant that the 8600 could support up to four additional users via additional terminals, using serial RS232 links, making it a small multi-user system at a time when this was still seen as a thing.
The widespread availability of networking and the commoditisation of PCs would eventually make multiuser systems redundant in most situations.
Sources
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