{"version":"1.0","type":"link","title":"Unit Control Block - Newikis","description":"In IBM mainframe operating systems OS/360 and its successors, a Unit Control Block (UCB) is a memory structure, or a control block, that describes any single input/output peripheral device (unit), or an exposure (alias), to the operating system. Certain data within the UCB also instructs the…","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400}