question: Når introduserte ibm pc/at basert på 20286?
answers.text: 1984
context: IBM Personal Computer/AT
  IBM Personal Computer AT, mer kjent som IBM AT og også noen ganger kalt PC AT eller PC/AT, var IBMs andre generasjons PC, designet rundt 6 MHz Intel 80286 mikroprosessoren og utgitt i 1984 som System Unit 5170. navnet AT stod for "Avansert teknologi", og ble valgt fordi AT tilbød forskjellige teknologier som da var nye innen personlige datamaskiner; et slikt fremskritt var at 80286-prosessoren støttet beskyttet modus. IBM ga senere ut en 8 MHz-versjon av AT.
answers_en.text: 1984
context_en: IBM Personal Computer/AT
  The IBM Personal Computer AT, more commonly known as the IBM AT and also sometimes called the PC AT or PC/AT, was IBM's second-generation PC, designed around the 6 MHz Intel 80286 microprocessor and released in 1984 as System Unit 5170. The name AT stood for "Advanced Technology," and was chosen because the AT offered various technologies that were then new in personal computers; one such advancement was that the 80286 processor supported protected mode. IBM later released an 8 MHz version of the AT.
title_en: IBM Personal Computer/AT