Broadcasting In Canada
Radio was introduced in Canada in the late 1890s, although initially transmissions were limited to the dot-and-dashes of Morse code, and primarily used for point-to-point services, especially for maritime communication. The history of broadcasting in Canada dates to the early 1920s, as part of the worldwide development of radio stations sending information and entertainment programming to the general public. Television was introduced in the 1950s, and soon became the primary broadcasting service. History Major themes in Canadian broadcasting history include: * development of the engineering technology * construction of stations and the building of networks * widespread purchase and use of radio and television sets by the public * debates regarding state versus private ownership of stations * financing of the broadcast media through the government, licence fees, and advertising * changing programming content, including concerns about American "cultural imperialism" via the airwave ...
[...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]  

Morse Code
Morse code is a telecommunications method which Character encoding, encodes Written language, text characters as standardized sequences of two different signal durations, called ''dots'' and ''dashes'', or ''dits'' and ''dahs''. Morse code is named after Samuel Morse, one of the early developers of the system adopted for electrical telegraphy. International Morse code encodes the 26 ISO basic Latin alphabet, basic Latin letters to , one Diacritic, accented Latin letter (), the Arabic numerals, and a small set of punctuation and procedural signals (Prosigns for Morse code, prosigns). There is no distinction between upper and lower case letters. Each Morse code symbol is formed by a sequence of ''dits'' and ''dahs''. The ''dit'' duration can vary for signal clarity and operator skill, but for any one message, once the rhythm is established, a beat (music), half-beat is the basic unit of time measurement in Morse code. The duration of a ''dah'' is three times the duration ...
[...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]