Anne Neville the country in March 1471 and quickly captured London and the person of Henry VI. The mentally troubled Henry VI was taken by Edward IV as a prisoner to the Battle of Barnet, where Warwick was killed on 14 April 1471. Edward IV then incarcerated Henry VI in the Tower of London. Following the decisive Yorkist victory at the Battle of Tewkesbury on 4 May, Henry was reported to have died of "pure displeasure and melancholy," although "The Great Chronicle of London" reported that Richard, Duke of Gloucester, was responsible for his death. As Constable of England, he probably delivered
IEEE 1471 of software-intensive systems". It has long been recognized that "architecture" has a strong influence over the life cycle of a system. However, until relatively recently, hardware issues have tended to dominate architectural thinking, and software aspects, when considered at all, were often the first to be compromised under the pressures of development. IEEE 1471 was created to provide a basis for thinking about the architecture of software-intensive systems. IEEE 1471's contributions can be summarised as follows (in this list, items in "italics" are terms defined by and used in the standard): IEEE 1471 provides informative annexes that relate its concepts