1978 1979 1980 1981 1982 1983 1984 1985 1986 1987   Bingo boosts tabloid newspaper sales by 540,000 to 13 million Queen opens Barbican Arts Centre in London Argentina invades the Falklands 20p coin introduced Princess Diana gives birth to William Inquest opens into the death of British nurse Helen Smith in Saudi Arabia after campaign by her father Lindy and Michael Chamberlain, who claim a dingo killed their baby, go on trial for murder Channel Four goes on air ET is a box-office hit in the UK and US 61-year-old American dentist receives a mechanical heart The silicon chip begins to revolutionise technology     Copyright © 1998, NHS