In electronics, a driver is an electrical circuit or other electronic component used to control another circuit or component, such as a high-power transistor, liquid crystal display (LCD), and numerous others.
They are usually used to regulate current flowing through a circuit or is used to control the other factors such as other components, some devices in the circuit. The term is often used, for example, for a specialized integrated circuit that controls high-power switches in switched-mode power converters. An amplifier can also be considered a driver for loudspeakers, or a constant voltage circuit that keeps an attached component operating within a broad range of input voltages.
Typically the driver stage(s) of a circuit requires different characteristics to other circuit stages. For example in a transistor power amplifier, typically the driver circuit requires current gain, often the ability to discharge the following transistor bases rapidly, and low output impedance to avoid or minimize distortion.
Driver '76 is a video game for the PlayStation Portable, which was released on May 8, 2007 in the US, and on May 11, 2007 in the EU. The game is a prequel to Driver: Parallel Lines, and is set two years prior. It is the first game in the Driver series for the PSP. It was developed by Ubisoft Reflections and Sumo Digital, and published by Ubisoft.
In New York City 1976, the story starts with Ray, a wheelman. He falls in love with Chen Chi, but she's already got someone, Jimmy. After gaining respect from her father, Ray is betrayed and has to earn money in the mean time. He eventually meets back with Zhou, Chen Chi's father, he tells him of how Jimmy is a traitor and for the remainder of the game you must take down Jimmy's empire. After Jimmy is presumably killed in an explosion, Zhou gives Ray his blessing to go out with Chen Chi, but finds out that she has been kidnapped by a scarred Jimmy, however Ray manages to save Chen Chi and shoot down Jimmy's helicopter with a car.
Driver 3 (stylized as DRIV3R), is a 2004 racing, shooting, and adventure video game. It is the third installment in the Driver series and was developed by Reflections Interactive and published by Atari. Driver 3 was released in North America for the PlayStation 2 and Xbox on 21 June 2004. In Europe, it was officially released on 25 June, although due to the way Atari shipped the title across the continent, it made its way into independent UK retailers before the release date, even reaching sixth place in the ELSPA chart for that week. It was also developed by Sorrent and published in North America, while it was published by Unique Games in Europe; the game was released for mobile phones on 23 June 2004. On 15 March 2005, it was released on PC for US customers, it was also released on Game Boy Advance 25 October 2005. At one point a Nintendo GameCube version and an N-Gage version were planned, but both were cancelled.
Driver 3 brings back features from Driver 2 and adds the ability to ride motorcycles and boats, use weapons, swim, climb ladders, and enter certain buildings among other things, controlling more than one character, as well as entering and exiting cars.
Keynote is a presentation software application developed as a part of the iWork productivity suite by Apple Inc. Keynote 6.0 was announced on October 23, 2013 and is the most recent version for the Mac. On January 27, 2010, Apple announced a new version of Keynote for iPad with an all new touch interface.
Keynote began as a computer program for Apple CEO Steve Jobs to use in creating the presentations for Macworld Conference and Expo and other Apple keynote events. Prior to using Keynote, Jobs had used Concurrence, from Lighthouse Design, a similar product which ran on the NeXTSTEP and OpenStep platforms.
The program was first sold publicly as Keynote 1.0 in 2003, competing against existing presentation software, most notably Microsoft PowerPoint.
In 2005 Apple began selling Keynote 2.0 in conjunction with Pages, a new word processing and page layout application, in a software package called iWork. At the Macworld Conference & Expo 2006, Apple released iWork '06 with updated versions of Keynote 3.0 and Pages 2.0. In addition to official HD compatibility, Keynote 3 added new features, including group scaling, 3D charts, multi-column text boxes, auto bullets in any text field, image adjustments, and free form masking tools. In addition, Keynote features three-dimensional transitions, such as a rotating cube or a simple flip of the slide.
In music theory, the key of a piece is the tonic note and chord that provides a subjective sense of arrival and rest. Other notes and chords in the piece create varying degrees of tension, resolved when the tonic note or chord returns. The key may be major or minor, although major is assumed in a phrase like "this piece is in C." Popular songs are usually in a key, and so is classical music during the common practice period, about 1650–1900. Longer pieces in the classical repertoire may have sections in contrasting keys.
Methods that establish the key for a particular piece can be complicated to explain, and vary over music history. However, the chords most often used in a piece in a particular key are those that contain the notes in the corresponding scale, and conventional progressions of these chords, particularly cadences, orient the listener around the tonic.
The key signature is not a reliable guide to the key of a written piece. It does not discriminate between a major key and its relative minor; the piece may modulate to a different key; if the modulation is brief, it may not involve a change of key signature, being indicated instead with accidentals. Occasionally, a piece in a mode such as Mixolydian or Dorian is written with a major or minor key signature appropriate to the tonic, and accidentals throughout the piece.
In biology, an identification key is a printed or computer-aided device that aids the identification of biological entities, such as plants, animals, fossils, microorganisms, and pollen grains. Identification keys are also used in many other scientific and technical fields to identify various kinds of entities, such as diseases, soil types, minerals, or archaeological and anthropological artifacts.
Traditionally identification keys have most commonly taken the form of single-access keys. These work by offering a fixed sequence of identification steps, each with multiple alternatives, the choice of which determines the next step. If each step has only two alternatives, the key is said to be dichotomous, else it is polytomous. Modern multi-access or interactive keys allow the user to freely choose the identification steps and their order.
At each step, the user must answer a question about one or more features (characters) of the entity to be identified. For example, a step in a botanical key may ask about the color of flowers, or the disposition of the leaves along the stems. A key for insect identification may ask about the number of bristles on the rear leg.
Revenue is income that a company receives from normal business activities. It may also refer to: