Search results
Results from the WOW.Com Content Network
Eugene Polley (November 29, 1915 – May 20, 2012) was an electrical engineer and engineering manager for Zenith Electronics who invented the first wireless remote control for television. Life and career
Other vehicular equipment had telephone handsets, rotary or push-button dialing, and operated full duplex like a conventional wired telephone. A few users had full-duplex briefcase telephones (which were radically advanced for their day). RCCs used paired UHF 454/459 MHz and VHF 152/158 MHz frequencies near those used by IMTS.
A push-button telephone is a telephone that has buttons or keys for dialing a telephone number, in contrast to a rotary dial used in earlier telephones.. Western Electric experimented as early as 1941 with methods of using mechanically activated reeds to produce two tones for each of the ten digits and by the late 1940s such technology was field-tested in a No. 5 Crossbar switching system in ...
The 3G wireless network that introduced so many people to internet on their phones has been completely shut down in the U.S. Cellular providers only have a finite amount of radio frequencies ...
the first to introduce push-button car radios [24] introduced soap operas to radio broadcasts [37] introduced the first non-electric refrigerator (Icyball) [citation needed] introduced the first refrigerator with shelves in the door (Shelvador) [15] launched the world's most powerful commercial radio station (WLW, at 500 kW) [12]
The British companies Pye TMC, Marconi-Elliott and GEC developed the digital push-button telephone, based on MOS IC technology, in 1970. It was variously called the "MOS telephone", the "push-button telephone chip", and the "telephone on a chip". It used MOS IC logic, with thousands of MOSFETs on a chip, to convert the keypad input into a pulse ...
The early history of radio is the history of technology that produces and uses radio instruments that use radio waves. Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as "wireless telegraphy". Later radio history increasingly involves matters of broadcasting.
In the 1960s, after the introduction of touch-tone service in November 1963 in various locations of the telephone network, the basic 500-type chassis was retrofitted with a new housing and face plate, and a ten-key push-button keypad. This was designated as the model 1500 telephone, and a twelve-button model 2500 was introduced in 1968.