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The iPhone is a line of smartphones produced by Apple that use Apple's own iOS mobile operating system. The first-generation iPhone was announced by then–Apple CEO Steve Jobs on January 9, 2007. Since then, Apple has annually released new iPhone models and iOS updates. As of November 1, 2018, more than 2.2 billion iPhones had been sold.
Genesis of iPhone [ edit] The idea of an Apple phone came from Jean-Marie Hullot, a software engineer from NextStep, and later, MacOS. [1] Initially, making an Apple phone was not favored by CEO Steve Jobs, but eventually Hullot was able to convince him. The first team was created in Paris; however, it was not until a few years later that he ...
The breakup of the Bell System resulted in the creation of seven independent companies that were formed from the original twenty-two AT&T-controlled members of the System. [5] On January 1, 1984, these companies were NYNEX, Pacific Telesis, Ameritech, Bell Atlantic, Southwestern Bell Corporation, BellSouth, and US West. NYNEX, merged with Bell ...
MCI, Inc. (formerly WorldCom and MCI WorldCom) was a telecommunications company. For a time, it was the second-largest long-distance telephone company in the United States, after AT&T. WorldCom grew largely by acquiring other telecommunications companies, including MCI Communications in 1998, and filed for bankruptcy in 2002 after an accounting ...
The Bluetooth protocol RFCOMM is a simple set of transport protocols, made on top of the L2CAP protocol, providing emulated RS-232 serial ports (up to sixty simultaneous connections to a Bluetooth device at a time). The protocol is based on the ETSI standard TS 07.10. RFCOMM is sometimes called serial port emulation.
Ion exchange is a reversible interchange of one species of ion present in an insoluble solid with another of like charge present in a solution surrounding the solid. Ion exchange is used in softening or demineralizing of water, purification of chemicals, and separation of substances. Ion exchange usually describes a process of purification of ...
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