Motorola, Inc. was an American multinational telecommunications company based in Schaumburg, Illinois. It was founded in 1928 as Galvin Manufacturing Corporation by brothers Paul and Joseph Galvin. The company changed its name to Motorola in 1947. After having lost $4.3 billion from 2007 to 2009, Motorola was split into two independent public companies, Motorola Mobility and Motorola Solutions, on January 4, 2011. The reorganization was structured with Motorola Solutions legally succeeding Motorola, Inc., and Motorola Mobility being spun off.
A telephone, colloquially referred to as a phone, is a telecommunications device that enables two or more users to conduct a conversation when they are too far apart to be easily heard directly. A telephone converts sound, typically and most efficiently the human voice, into electronic signals that are transmitted via cables and other communication channels to another telephone which reproduces the sound to the receiving user. The term is derived from Ancient Greek: τῆλε, romanized: tēle, lit. 'far' and φωνή, together meaning distant voice.
In telecommunications, an acoustic coupler is an interface device for coupling electrical signals by acoustical means—usually into and out of a telephone.
Shirley Ann Jackson, is an American physicist, and was the 18th president of Rensselaer Polytechnic Institute. She is the first African American woman to have earned a doctorate at the Massachusetts Institute of Technology (MIT) in Theoretical Elementary Particle Physics, and the first African American woman to have earned a doctorate at MIT in any field. She is also the second African American woman in the United States to earn a doctorate in physics.
Western Electric Co., Inc. was an American electrical engineering and manufacturing company that operated from 1869 to 1996. A subsidiary of the AT&T Corporation for most of its lifespan, Western Electric was the primary manufacturer, supplier, and purchasing agent for all telephone equipment for the Bell System from 1881 until 1984, when the Bell System was dismantled. Because the Bell System had a near-total monopoly over telephone service in the United States for much of the 20th century, Western Electric's equipment was widespread across the country. The company was responsible for many technological innovations, as well as developments in industrial management.
Financial engineering is a multidisciplinary field involving financial theory, methods of engineering, tools of mathematics and the practice of programming. It has also been defined as the application of technical methods, especially from mathematical finance and computational finance, in the practice of finance.
The New York University Tandon School of Engineering is the engineering and applied sciences school of New York University. Tandon is the second oldest private engineering and technology school in the United States.
A cordless telephone or portable telephone has a portable telephone handset that connects by radio to a base station connected to the public telephone network. The operational range is limited, usually to the same building or within some short distance from the base station.
The history of mobile phones covers mobile communication devices that connect wirelessly to the public switched telephone network.
Collegiate Gothic is an architectural style subgenre of Gothic Revival architecture, popular in the late-19th and early-20th centuries for college and high school buildings in the United States and Canada, and to a certain extent Europe. A form of historicist architecture, it took its inspiration from English Tudor and Gothic buildings. It has returned in the 21st century in the form of prominent new buildings at schools and universities including Cornell, Princeton, Vanderbilt, Washington University, and Yale.
The Western Electric model 500 telephone series was the standard domestic desk telephone set issued by the Bell System in North America from 1950 through the 1984 Bell System divestiture. The successor to the model 302 telephone, the model 500's modular construction compared to previous types simplified manufacture and repair and facilitated a large number of variants with added features. Touch-tone service was introduced to residential customers in 1963 with the model 1500 telephone, which had a push-button pad for the ten digits. The model 2500 telephone, introduced in 1968, added the * (asterisk) and # (pound) keys.
Mobile phone tracking is a process for identifying the location of a mobile phone, whether stationary or moving. Localization may be affected by a number of technologies, such as the multilateration of radio signals between (several) cell towers of the network and the phone or by simply using GNSS. To locate a mobile phone using multilateration of mobile radio signals, the phone must emit at least the idle signal to contact nearby antenna towers and does not require an active call. The Global System for Mobile Communications (GSM) is based on the phone's signal strength to nearby antenna masts.
Curtis Raymond Carlson was president and CEO of SRI International from 1998 to 2014.
This history of the telephone chronicles the development of the electrical telephone, and includes a brief overview of its predecessors. The first telephone patent was granted to Alexander Graham Bell in 1876.
A mobile phone, or cell phone, is a portable telephone that allows users to make and receive calls over a radio frequency link while moving within a designated telephone service area, unlike fixed-location phones. This radio frequency link connects to the switching systems of a mobile phone operator, providing access to the public switched telephone network (PSTN). Modern mobile telephony relies on a cellular network architecture, which is why mobile phones are often referred to as 'cell phones' in North America.
A feature phone, brick phone, or dumbphone, is a mobile phone that retains the form factor of earlier generations of mobile telephones, typically with press-button based inputs and a small non-touch display. Feature phones tend to use an embedded operating system with a small and simple graphical user interface, unlike large and complex mobile operating systems on smartphones.
Phone hacking is the practice of exploring a mobile device, often using computer exploits to analyze everything from the lowest memory and CPU levels up to the highest file system and process levels. Modern open source tooling has become fairly sophisticated to be able to "hook" into individual functions within any running app on an unlocked device and allow deep inspection and modification of its functions.
Edwin Eugene "Gene" Aldrin Sr. was an aviator and officer in the United States Army during World War I and World War II. He was assistant commandant of the Army's first test pilot school at McCook Field, Ohio, from 1919 to 1922, and founded the engineering school there that later became the Air Force Institute of Technology (AFIT) at Wright-Patterson AFB. The Edwin E. Aldrin Sr. Award is presented to an AFIT graduate for leadership and accomplishing AFIT's educational objectives in an outstanding manner. He was the father of astronaut Buzz Aldrin.
The Western Electric hand telephone sets are a series of telephones that were produced from 1927 by the Western Electric Company for the American Telephone and Telegraph Company (AT&T) and the Bell System. The series features the mouthpiece (transmitter) and the earpiece (receiver) combined into a hand-held unit, originally named a hand telephone, or handset. The handset would be held against the ear and in front of the mouth simultaneously, in contrast to earlier telephones in the Bell System where only the receiver was held against the ear, while the user spoke into a fixed transmitter mounted on a telephone stand or wall telephone.