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Computermuseum/ HP 9000/ More about the HP 9000  The HP 9000
Computer  The HP 9000 Series 520 was introduced in 1982, and
described in the August 1983 Hewlett-Packard Journal as "the new
HP 9000 Computer, a mainframe on a desktop for individual
engineers and scientists." It could run either HP BASIC, a
single-user BASIC environment, or HP-UX, a multiuser UNIX
operating system with a full UNIX development environment,
including C and FORTRAN 77 compilers.  But was it really the
first HP 9000? That depends on your point of view. The HP 9000
Series 236 was available earlier, but was being sold as the HP
9836 (with BASIC, HPL, and Pascal operating systems) and was
only later adopted into the HP 9000 product line as the HP 9000
Series 236.  The Hardware  HP 9000 CPU  HP 9000 Series 500
computers were based on a processor architecture called FO