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A cable is one or more wires or optical fibers bound together, typically in a common
protective jacket or sheath. An electrical adapter may enable connection of a socket
used in one region to a plug used in another by offering connections for the disparate
contact arrangements, while not changing the voltage.
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An ink cartridge is a replaceable component of an ink jet printer that contains
the ink (and sometimes the print-head itself) that is spread on paper during printing.
Each ink cartridge contains one or more partitioned ink reservoirs; certain manufacturers
also add electronic contacts and a chip that communicates with the printer.
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CD-ROMs are popularly used to distribute computer software, including games and
multimedia applications, though any data can be stored. Some CDs hold both computer
data and audio with the latter capable of being played on a CD player, while data
is only usable on a computer (such as PC CD-ROMs).
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A desktop computer is a personal computer (PC) in a form intended for regular use
at a single location, as opposed to a mobile laptop or portable computer.
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A digital camera is a camera that takes video or still photographs, or both, digitally
by recording images via an electronic image sensor. Digital cameras are incorporated
into many devices ranging from PDAs and mobile phones.
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A hard disk drive is a non-volatile storage device which stores digitally encoded
data on rapidly rotating platters with magnetic surfaces.
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Headphones are a pair of small loudspeakers, or less commonly a single speaker,
with a way of holding them close to a user's ears and a means of connecting them
to a signal source such as an audio amplifier, radio or CD player. They are also
known as earphones, ear buds, stereo phones, head sets or, informally cans.
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In computing, a keyboard is an input device, partially modeled after the typewriter
keyboard, which uses an arrangement of buttons or keys, which act as mechanical
levers or electronic switches. In normal usage, the keyboard is used to type text
and numbers into a word processor, text editor or other program.
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A Compact Disc (also known as a CD) is an optical disc used to store digital data,
originally developed for storing digital audio. DVD, also known as "Digital Versatile
Disc" is an optical disc storage media format. Its main uses are video and data
storage. DVDs are of the same dimensions as compact discs (CDs) but store more than
six times as much data.
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A memory card or flash memory card is a solid-state electronic flash memory data
storage device capable of storing digital contents. These are mainly used with digital
cameras, handheld and Mobile computers, mobile phones, music players, video game
consoles, and other electronics.
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A visual display unit, often called simply a monitor or display, is a piece of electrical
equipment which displays images generated from the video output of devices such
as computers, without producing a permanent record. Most new monitors typically
consist of a TFT LCD, with older monitors based around a cathode ray tube (CRT).
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In computing, a mouse is a pointing device that functions by detecting two-dimensional
motion relative to its supporting surface. Physically, a mouse consists of an object
held under one of the user's hands, with one or more buttons.
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Computer networking devices are units that mediate data in a computer network. Computer
networking devices are also called network equipment, Intermediate Systems (IS)
or Inter Working Unit (IWU). Units which are the last receiver or generate data
are called hosts or data terminal equipment.
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Computer networking devices are units that mediate data in a computer network. Computer
networking devices are also called network equipment, Intermediate Systems (IS)
or Inter Working Unit (IWU). Units which are the last receiver or generate data
are called hosts or data terminal equipment.
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A USB flash drive consists of a NAND-type flash memory data storage device integrated
with a USB interface. USB flash drives are typically removable and rewritable, much
smaller than a floppy disk (1 to 4 inches or 2.5 to 10 cm), and most USB flash drives
weigh less than an ounce (28g). Storage capacities typically range from 64 MB to
128 GB with steady improvements in size and price per gigabyte.
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In computing, a printer is a peripheral which produces a hard copy (permanent human-readable
text and/or graphics) of documents stored in electronic form, usually on physical
print media such as paper or transparencies. Many printers are primarily used as
local peripherals, and are attached by a printer cable or, in most new printers,
a USB cable to a computer which serves as a document source.
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A video projector takes a video signal and projects the corresponding image on a
projection screen using a lens system. All video projectors use a very bright light
to project the image, and most modern ones can correct any curves, blurriness, and
other inconsistencies through manual settings. Video projectors are widely used
for conference room presentations, classroom training, home theatre and live events
applications. Projectors are widely used in many schools and other educational settings,
connected to an interactive white board to interactively teach pupils.
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Random-access memory (RAM) is a form of computer data storage. Today, it takes the
form of integrated circuits that allow stored data to be accessed in any order (i.e.,
at random). The word random thus refers to the fact that any piece of data can be
returned in a constant time, regardless of its physical location and whether or
not it is related to the previous piece of data.
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Devices that can read text or illustrations printed on paper and translate the information
into a form the computer can use to store or Print the file.
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Computer speakers, or multimedia speakers, are external speakers, commonly equipped
with a low-power internal amplifier. The standard audio connection is a 3.5mm (1/8
inch) stereo jack plug often color-coded lime green (following the PC 99 standard)
for computer sound cards.
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A TV tuner card is a computer component that allows television signals to be received
by a computer. Most TV tuners also function as video capture cards, allowing them
to record television programs onto a hard disk.
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A video card, also known as a graphics accelerator card, graphics card or a display
adapter is one type of an expansion card whose function is to generate and output
images to a display. Some video cards offer added functions, such as video capture,
TV tuner adapter, MPEG-2 and MPEG-4 decoding, FireWire, light pen, TV output, or
the ability to connect multiple monitors.
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Webcams are video capturing devices connected to computers or computer networks,
often using USB or, if they connect to networks, Ethernet or Wi-Fi. They are well
known for their low manufacturing costs and flexible applications.
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