Hard disk storage capacities have been increasing over the years. The world’s first hard disk, IBM 350 Disk File, could store 5MB of data was announced on 4th September 1956. The first 1TB drive appeared 51 years later in 2007. It took just a couple of years to double the capacity and the first 2GB drive came into the market in 2009.
The extremely popular number game, Sudoku, does not come from Japan. It was invented by Howard Garns, an American architect, and published for the first time in 1979 in the Dell Pencil Puzzles and Word Games. The puzzle remained relatively unknown. In April of 1984, Sudoku, then known as Number Place, was published in the Nikoli magazine in Japan and became a instant hit in the country. Incidentally, the Japanese still call by its original name - Number Place! The credit for making Sudoku popular around the world goes to Wayne Gould, a Hong Kong judge. He first created a computer program that could produced countless puzzles automatically and then convinced The Times to publish them in Britain. On 12th November 2004, the first modern Sudoku was published. It then crossed the Atlantic and became a sensation in the US. By the way, the word Sudoku is of Japanese origin and means digit-single. The term is copyrighted in Japan by Maki Kaji, the president of Japanese publishing company Nikoli. [more...]