Harpsichord invented around the 14th century used mainly during the 15th to 18th centuries (1400-1700) 52 key harpsichords exist Theatrum Orbis Terrarum 1570 map of the world Clavicytherium from 1619 Baroque Music Era 1600 to 1750 Antonio Vivaldi 4 March 1678 to 28 July 1741 Gaetano Maria Schiassi March 1698 to 1754 G.F. Handel 1685 to 1759 Born the same year as Johann Sebastian Bach and Domenico Scarlatti Bach wrote for 61 key harpsichord 1700 approx. first pianos appear The first pianos, therefore, usually had 60 keys. 60 keys represented five octaves, since there are 12 notes in an octave. also check spinets Bartolomeo Cristofori makes some pianos some from the 1720s still survive and work original pianoforte has 49 keys early piano players used only 3 fingers key colour was originally inverted 54 keys later on? Mozart dies 1791 at age 35 (225 years ago) Mozart's Piano -------------- 61 keys??? The piano was originally made by Anton Walter, who is said to be the most famous Viennese piano maker of Mozart's time. It has two octaves less than a modern piano, and is much lighter and smaller than modern pianos, weighing just 187 pounds (85kg), and is three feet wide and a bit more than seven feet long (one meter by 2.23 meters.) Johann Sebastian Bach 31 March [O.S. 21 March] 1685 - 28 July 1750 Beethoven born 17 December 1770 died 26 March 1827 (189 years ago) Earliest photograph 1825 called a "heliograph" or sun picture taken by Joseph-Nicéphore Niepce 1838 Daguerre invents the daguerreotype William Henry Fox Talbot patents the calotype 1841 Sigismond Thalberg January 1812 to 27 April 1871 Pyotr Ilyich Tchaikovsky 1840-1893 1888 Roundhay Scene, Traffic crossing Leeds bridge earliest film created 1890 film "Monkeyshines #1" released 1913 to 1948 vitamins gradually discovered 1922 regular wireless radio broadcasts for entertainment began in the UK from the Marconi Research Centre 1933 FM Radio Patented The serendipitous discovery of penicillin is usually attributed to Scottish scientist Alexander Fleming in 1928, though others had earlier noted the antibacterial effects of Penicillium (a type of fungus). Penicillin becomes widely available in the 1940's 1941 Citizen Kane has scrolling electric sign Bell Laboratories demonstrated the first transistor on December 23, 1947. 1950 Ontario switches from 25 cycle to 60 cycle 1952 CBC TV starts broadcasting UNISERVO I is the first magnetic tape drive for computers created in 1951 A workable all-transistor radio was demonstrated in August 1953 The Ampex VRX-1000 became the world's first commercially successful videotape recorder in 1956. It uses the 2" quadruplex format, using two-inch (5.1 cm) tape. UNIVAC Solid State 1958, an almost completely transistorized computer RCA had modified several VR-1000s to record color video for the NBC TV network (which RCA owned at the time) in the late 1950s, since NTSC color video programming was already underway at NBC. The Floppy Disk Patent #3,668,658[10] was issued on June 6, 1972 Xerox Alto 1973 Commodore PET prototype shown at the January 1977 Consumer Electronics Show in Las Vegas IBM 3800 first laser printer invented in 1975, released in 1976 Fall of 1977 Radio Shack and Commodore announce their personal computers 1977 first video store opens Los Angeles USA Oct 1977 Popular Science shows Commodore Pet Prototype on front page Feb 1979 Atari releases video pinball Oct 1st, 1982 Sony CDP-101 the first compact disc player is released in japan Xerox Star 1981 Sony releases the first portable CD player the D-50 in Nov 1984 August 1984 Commodore buys Amiga Corp 1985 Amiga 1000 released 1987 Amiga 500 and 2000 released first HP laserjet released may 1984 for $3,500 HP laserjet plus released sept 1985 HP laserjet 5 released march 1995 HP laserjet 5N released in april 1996 (this is the one I use) 1985 Philips CM-100 CD-ROM drive (one drive was dated nov 1987) 1987 Hitachi CDR-1503S PC CD-ROM drive 1992 Amiga A570 single speed external CD-ROM for Amiga 500 April 29, 1994 Commodore goes bankrupt 1997, DVD players start to appear Toshiba SD-3000 (world's first DVD player nov 1996) Panasonic DVD-A300 SONY model DVP-S7000