{"version":"1.0","type":"link","title":"IBM 2821 Control Unit - Newikis","description":"The IBM 2821 Control Unit attaches card readers and card punches, and line printers to the IBM System/360 and IBM System/370 families of computers. The devices attached may be a combination of:","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400,"thumbnail_url":"https://thumb.wikimedia.org/wikipedia/commons/thumb/8/86/1970_CNRZ_M%C3%A9canographie-3-cliche_Jean_Weber.jpg/1280px-1970_CNRZ_M%C3%A9canographie-3-cliche_Jean_Weber.jpg","thumbnail_width":1280,"thumbnail_height":1271}