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 Standards Board approved the specification as IEEE Std 1471-2000. In 2006, ISO/IEC Joint Technical Committee 1 (JTC1), Information technology/Subcommittee SC 7, Software and systems engineering, adopted the specification as ISO/IEC 42010, under a special "fast-track procedure", in parallel with its approval by national bodies of ISO and IEC. A coordinated revision of this standard by ISO/IEC JTC1/SC7/WG42 and IEEE CS commenced in 2006, following the successful ISO/IEC fast-track ballot and in line with the IEEE standard 5-year review of the standard. In November 2011, IEEE 1471-2000 and ISO/IEC 42010:2007 was superseded by ISO/IEC/IEEE 42010:2011, "Systems and software engineering — Architecture