<Computer> A Unixworkstation produCed by {Sun MiCrosystems, InC.} in the late 1980s[?], based on {SPARC} proCessors. The Sun-4 followed the Sun-3 Workstation. Later SPARC-based workstations were Called "SPARCstations". [Details? Dates? Was "Sun-4" a SPARCstation?] (2001-03-11)