Dial-up conection Dial-up Internet access is a form of Internet access that uses the facilities of the public switched telephone network (PSTN) to establish a connection to an Internet service provider (ISP) by dialing a telephone number on a conventional telephone line. The user's computer or router uses an attached modem to encode and decode information into and from audio frequency signals, respectively. In 1979, Tom Truscott and Steve Bellovin, graduate students for Duke University, created an early predecessor to dial-up Internet access called the USENET. The USENET was a UNIX based system that used a dial-up connection to transfer data through telephone modems.[1] Dial-up Internet has been around since the 1980s via public providers such as NSFNET-linked universities and was first offered commercially in July 1992 by Sprint.[2] Despite losing ground to broadband since...
AMEZON FORERST he Amazon rainforest ( Portuguese : Floresta Amazônica or Amazônia ; Spanish : Selva Amazónica , Amazonía or usually Amazonia ; French : Forêt amazonienne ; Dutch : Amazoneregenwoud ), also known in English as Amazonia or the Amazon Jungle , is a moist broadleaf forest in the Amazon biome that covers most of the Amazon basin of South America. This basin encompasses 7,000,000 km 2 (2,700,000 sq mi), of which 5,500,000 km 2 (2,100,000 sq mi) are covered by the rainforest. This region includes territory belonging to nine nations. The majority of the forest is contained within Brazil , with 60% of...