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| There are 21 entries in the glossary. |
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| Radio Frequency (RF) | Many
wireless technologies are based on RF technology that sends radio frequency
waves through the air.
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| RAM (Random Access Memory) | The temporary memory of the computer where programs and information are kept. The contents of this memory are lost when the computer is turned off. |
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| RAW | In computer terms, RAW means untouched or
original. A RAW file created by a
digital camera contains the actual data captured by the camera’s sensors
without compression or changes.
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| Record | In a database, one set of information. |
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| Recording Industry Association of Americ | see RIAA
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| Red Eye | In flash photography, the eyes of the photographic subject show glowing
red hue, called red eye. This is caused
when the light from the flash is reflected back from the inside of the eye to
the camera. Most graphic editing software programs have tools to easily return
the red eyes back to their proper color.
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| Registry |
The Windows Registry stores
system configuration details for the entire computer system as well as
information for all installed programs. Registry information can be edited
using a program called RegEdit and also with third party software. Extreme care
should be taken when editing the registry. This task should not be attempted by
a neophyte.
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| Relational Database | A somewhat complex database which uses several tables that relate to each other in some way. |
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| Reset Button | A button, usually located on the front of the computer, which resets or restarts the computer software without turning the computer completely off. |
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| Resolution | The term used to describe sharpness and clarity of an image. The higher the resolution, the better the image. |
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| RFID | Radio Frequency Identification is already being used in license plates to identify
and charge cars as they drive through toll booths without stopping. This
technology is poised to become the bar coding and identification method of the
future. RFID tags are extremely small, barely detectable flakes, or tags of
silicon. Some are no bigger than a grain of salt. These silicon tags use radio
frequencies to transmit a code that uniquely identifies the tag, and therefore,
the item to which the tag is attached.
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| RGB | An abbreviation for
red (R), green (G), and blue (B), which are the three primary colors that make
up visible light. This is the type of color model that is used in digital
photography. Printed items are generally created using a model based on the
CMYK four-color model.
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| RIAA (Recording Industry Association of |
The RIAA was founded
in 1952 to oversee audio standards. Since the advent of digital music the RIAA
has become famous for bringing copyright infringement lawsuits against people
of all ages who they accuse of sharing digital music illegally.
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| Ripping | The process of
copying audio or video data from one medium to another. To rip a CD usually
means to copy the music from the CD to the computer’s hard disk.
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| ROM (Read Only Memory) | Computer memory or disk on which data has been prerecorded. Once data has been written onto a ROM chip or disk, it can only be read and cannot be changed or re-written.
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| Rootkit | A rootkit is software that runs at the lowest level of the computer. It infiltrates the kernel of the computer. A rootkit is a technique that is often used by hackers and virus creators to hide the files they create. It has also been used by manufacturers to hide digital right management software, much to the chagrin of the average computer user.
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| Router |
A device that moves data in a network and forwards traffic
between networks. The router routes each packet of information. It determines
where the destination computer is located and then finds the best way to
transmit the data there. Routers also act to allow or disallow the data into
the local network helping to keep data secure.
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| RSI (Repetitive Stress Injuries) | RSI is a type of injury where soft tissue in the body, such as muscles, nerves, tendons, and joints become irritated or inflamed. If the injury goes untreated, permanent damage can occur. These injuries are known to be caused by repetitive motions. Musicians and others who perform the same physical motions over and over are often targets of RSI. When dealing with computers, the repeated motions and prolonged use of the keyboard and/or mouse can lead to RSI in the hands, wrists, elbows, and arms. Simple measures such as taking occasional breaks from computer work and ergonomically correct positioning of the keyboard and mouse can often prevent Repetitive Strain Injury.
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| RSS | (Really Simple Syndication) is a type of news
aggregation that feeds headlines and links to new stories to the end user
automatically. With the newer Internet browsers, like Internet Explorer 7 and
Firefox, you can access and subscribe to RSS feeds quite easily. When you are
on a website that offers RSS feeds, an orange square appears on the right side
of the address bar at the top of the screen. Just click on the orange square to
see and/or subscribe to the RSS feed from that websites.
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| Ruler | In
a word processor, you can use the ruler to set the indent, margin and tab
markers and this can allow complex formatting options. Never use the space bar
and return key to align text.
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| RV (recreational vehicle) | An
RV combines transportation and living quarters for travel and recreational
purposes. These include towable travel trailers, motor homes, conversion vans,
pickups, and SUVs.
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