History of the halfpenny . The halfpennies of the first reign of King Edward IV (1461–1470) are divided into the heavy coinage up to 1464, which was only minted in London, and the light coinage from 1464, produced at London, Bristol (now ), Canterbury (), York, and Norwich (). The obverse inscription reads . During the short second reign of Henry VI (1470–1471), halfpennies were produced at London and Bristol. The obverse inscription was changed to read . Halfpennies of the second reign of Edward IV (1471–1483) are much like those of the first reign (only a few months earlier) but they were also
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