A shekara ta 1989, HP ya ƙaddara cewa RISC (Reduced Instruction Set Computing) gine-gine suna gab da iyakar sarrafawa a umarni ɗaya a kowane zagaye. Masu bincike na HP sun bincika sabon gine-gine, daga baya aka kira shi a bayyane Parallel Instruction Computing (EPIC), wanda ke ba da damar mai sarrafawa don aiwatar da umarni da yawa a kowane zagaye na agogo. EPIC yana aiwatar da wani nau'i na umarni mai tsawo (VLIW) gine-gine, wanda kalma ɗaya na umarni ya ƙunshi umarni da yawa. Tare da EPIC, mai tarawa ya ƙayyade a gaba wanda za a iya aiwatar da umarni a lokaci guda, don haka mai sarrafawa kawai yana aiwatar da umarnin kuma baya buƙatar ƙaddamar da hanyoyin don tantance waɗanne umarni da za a aiwatar a layi ɗaya. Tambaya: Menene sunan sabon tsarin?
Bayyanannen Lissafin Koyarwa na Parallel (EPIC)