question: Hvornår introducerede ibm den 20286 baserede pc/at?
answers.text: 1984
context: IBM Personal Computer/AT
  IBM Personal Computer AT, mere almindeligt kendt som IBM AT og undertiden også kaldet PC AT eller PC/AT, var IBM's anden generation af PC'er, der var designet omkring 6 MHz Intel 80286-mikroprocessoren og blev lanceret i 1984 som System Unit 5170. Navnet AT stod for "Advanced Technology" og blev valgt, fordi AT'en tilbød forskellige teknologier, som dengang var nye i personlige computere; et af disse fremskridt var, at 80286-processoren understøttede beskyttet tilstand. IBM frigav senere en 8 MHz-version af 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