Inventions - Thomas Edison invented the phonograph in 1877. Peter Carl Goldmark invented the LP record in 1948. The Compact Disc was invented by Joop Sinjou and Toshi Tada Doi in 1979. It took the CD fifteen years to replace the LP. The first true aircraft carrier, HMS Furious, was converted from a battlecruiser into a flush-deck aircraft carrier in 1917, and it was the prototype of all flat-tops. The first aircraft carriers designed from scratch were HMS Hermes and IJN Hosho, which both were launched in 1920. HMS Furious is the only aircraft carrier which did combat operations in both World Wars. She was scrapped in 1948. Douglas Engelbart experimented in the 1960's with light pens and steering wheels before deciding on a mouse for computer use.

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Inventions - Thomas Edison invented the phonograph in 1877. Peter Carl Goldmark invented the LP record in 1948. The Compact Disc was invented by Joop Sinjou and Toshi Tada Doi in 1979. It took the CD fifteen years to replace the LP. The first true aircraft carrier, HMS Furious, was converted from a battlecruiser into a flush-deck aircraft carrier in 1917, and it was the prototype of all flat-tops. The first aircraft carriers designed from scratch were HMS Hermes and IJN Hosho, which both were launched in 1920. HMS Furious is the only aircraft carrier which did combat operations in both World Wars. She was scrapped in 1948. Douglas Engelbart experimented in the 1960's with light pens and steering wheels before deciding on a mouse for computer use.