'Incredible' technical revolution

PUBLISHED: 09:56 23 January 2008 | UPDATED: 22:14 26 October 2009

IT isn t just the local changes that Hatfield man David has witnessed, he has also seen an incredible development in technology. Through the last 50 years the electrical trade has changed beyond all recognition, in ways that could never have been imagine

IT isn't just the local changes that Hatfield man David has witnessed, he has also seen an incredible development in technology.

"Through the last 50 years the electrical trade has changed beyond all recognition, in ways that could never have been imagined by my father back then. Colour television became available around 1969 although in the early days supply was quite short.

"In 1972 we began to stock a larger selection of washing machines, fridges and audio equipment and the 1980's saw the introduction of domestic video cassette recorders and they were very expensive at the time.

"Now televisions have become completely wall mountable with the LCD and Plasma panel sets. In 1958 nobody would have guessed what it would be like in 2008!"

A brief chronological history of inventions in the last half century:

1958 - The modem, the automatic electric can

opener, frost-free refrigerators and freezers;

1962 - The audio cassette

1965 - The compact disk

1967 - The first handheld calculator

1971 - VCR

1979 - Cellular phones and walkman

1981 - The first IBM-PC

1989 - High-definition television

1990 - The internet

1995 - DVD

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