The SPARCstation, SPARCserver and SPARCcenter product lines were a series of SPARC-based computer workstations and servers in desktop, deskside and rack-based form factor developed and sold by SunMicrosystems.The first SPARCstation was the SPARCstation 1 , introduced in 1989. The series was very popular and introduced the Sun-4c architecture, a variant of the Sun-4 architecture previously introduced in the Sun 4/260. Thanks in part to the delay in the development of more modern processors from Motorola,the SPARCstation series was very successful across the entire industry. The last model bearing the SPARCstation name was the SPARCstation 20. The workstation series was replaced by the Sun Ultra series in 1995; the next Sun server generation was the Sun Enterprise line introduced in 1996.