Author Topic: Do you know?  (Read 197 times)

Offline nadimhaider

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Do you know?
« on: December 06, 2013, 08:20:02 PM »
Martin "Marty" Cooper (born December 26, 1928 in Chicago, Illinois, United States) is an American pioneer and visionary in the wireless communications industry. With eleven patents in the field, he is recognized as an innovator in radio spectrum management.
While at Motorola in the 1970s, Cooper conceived the first handheld mobile phone (distinct from the car phone) and led the team that developed it and brought it to market. He is considered the "father of the cell phone" and is also cited as the first person in history to make a handheld cellular phone call in public.


The first hand-held cell phone was demonstrated by John F. Mitchell and Dr Martin Cooper of Motorola in 1973, using a handset weighing around 2.2 pounds (1 kg). In 1983, the DynaTAC 8000x was the first to be commercially available.
In 1991, the second generation (2G) digital cellular technology was launched in Finland by Radiolinja on the GSM standard.
Ten years later, in 2001, the third generation (3G) was launched in Japan by NTT DoCoMo on the WCDMA standard. This was followed by 3.5G, 3G+ or turbo 3G enhancements based on the high-speed packet access (HSPA) family, allowing UMTS networks to have higher data transfer speeds and capacity.

Ref: http://en.wikipedia.org/wiki/Mobile_phone