Search results
Results from the WOW.Com Content Network
During Silveira's time as the Project Department lead, she was faced with creating an improved solution for Brazil's new public telephones. Prior to this, few Brazilian households could afford to own a telephone and majority of the population took phone calls on telephones placed in local business, such as bars and bakeries. [5]
Brazil holds the 6th spot in number of users worldwide. [10] Many technologies are used to bring broadband Internet to consumers, with DSL and cable being the most common (respectively, about 13 million and 9 million connections), [ 11 ] and 3G technologies. 4G technologies were introduced in April 2013 and presently are available in over 90% ...
The first cell phone would only be released two years later, being available to very few people. Out of the almost 100 million inhabitants of Brazil, 52 million lived in urban areas, according to IBGE data. In many places, due to the noise, listening and being heard from a public phone installed in the middle of the street was difficult.
Telephone centers in the city of Rio de Janeiro (1976). Between 1966 and 1971, 129,000 telephone terminals were installed, rotary exchanges were expanded and new Pentaconta 1000 (Standard Electrica) crossbar exchanges equipped for the DDD system were set up. The plan's first telephone exchange was inaugurated in December 1966 in Copacabana ("56 ...
As opposed to Chappe's system which involved pulleys rotating beams of wood, Edelcrantz's system relied only upon shutters and was therefore faster. [8] However, semaphore as a communication system suffered from the need for skilled operators and expensive towers often at intervals of only ten to thirty kilometers (six to nineteen miles).
11 February 1876: Elisha Gray invents a liquid transmitter for use with a telephone, but he did not make one. 14 February 1876 about 9:30 am: Gray or his lawyer brings Gray's patent caveat for the telephone to the Washington, D.C. Patent Office (a caveat was a notice of intention to file a patent application.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
The system re-used six frequencies in the 450 MHz band in nine sites. [16] In the UK, Channel Islands and elsewhere the "Rabbit" phone system was briefly used, being a hybrid of "cell" base stations and handsets. One major limitation was that you had to be less than 300 feet (91 m) feet (closer with buildings) from a base due to power ...