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Radar Detector Jammer - An electronic
device that 'jams' a police radar gun.
Click
here for more information about police radar jammers.
RAID - Redundant Array of Independent
Disks. Allows data to be written to multiple hard disk drives. A must for
critical data backup.
Here is an
article all about RAID.
RAM - Random Access Memory. This is what
makes a computer really move faster. We recommend at least 1gig of memory, 2 gig
or more is even better. Check out our pc tips for more info on this topic. This
type of memory holds the data temporarily. Your CPU uses this as working space
to process all the commands coming at it. The more space, the faster everything
works. Click here
for a must read article before you purchase any RAM.
Random Access - The ability to access data
in any order.
RDP - Remote Desktop Protocol. A feature
of Windows that allows remote access to a pc.
Here is more information on RDP.
RDRAM - Rambus Dynamic Random Access
Memory. A newer type of system memory that can run up to 800 MHz bus speed.
Lower voltage requirement, 2.5 volts, means less heat generated.
Read - In terms of computer definitions,
this word means to acquire then interpret data from a storage device such as a
hard drive or memory chips.
Read only - A file that is "locked" and
cannot be modified.
ReadyBoost - A Windows Vista application
that uses a USB flash drive to provide additional memory capacity.
Real Estate - A computer slang term that
refers to how much area (ports, memory slots) is available for upgrading.
Rectify - To convert AC voltage into DC
voltage.
Redundant - In computer terms, this means
to have a backup piece of hardware in the event of failure. Some examples,
redundant power supplies - redundant hard drives (see RAID).
Refresh Rate - The measure of how quickly
a monitor redisplays pixels. A slow refresh rate will cause monitor to
"flicker". The higher the number, the quicker the refresh rate.
Registry - a Microsoft Windows registry is
basically just a huge database of records. This database stores every single
hardware & software configuration, settings on your computer. It is organized in
a hierarchical model and can contain hundreds of thousands of entries.
Here is
an article that explains how to clean and backup the registry.
Repeater - A network device that increases
the signal to allow data to be transmitted over longer cable distances.
Resistor - An electronic device that
provides resistance to the flow path of electricity.
Resolution - This is a measurement of the
number of dots displayed on a pc monitor (dpi). See our pc tips for safety information
on resolution.
RFI - Radio Frequency Interference. An
electrical "noise" generated by equipment operating at radio frequencies.
RFID - Radio Frequency Identification.
Click here for a
beginners article about RFID.
RFID Chips - Radio Frequency
Identification Chips are very small electronic chips that are being used to
thwart DVD theft. The tiny chips are embedded, along with a thin coating, onto a
DVD to render the disc useless. The RFID blocks a DVD player from reading
critical information about the disk. Once activated at the retailers register,
an electrical signal turns the coating clear and makes the disk playable.
Rheostat - A variable resistor.
RIMM - Rambus Inline Memory Module. A
newer design of memory chips that come in 184 pin configurations. All RIMM slots
must be filled for a computer to operate. See CRIMM.
Ring Topology - A network layout where the
cables are connected in a circle from computer to computer.
RMS - Root Mean Square
Robot - Machines or software guided
automatically to perform a specified task(s). The term robot was first coined in
1920. It is a Czechoslovakian word that means "forced labor"
ROM - Read Only Memory. This type of
memory has a set of instructions that can only be read.
ROR - Resources for a Resource. This is an
xml format that works very similar to Google sitemaps. It is a file that search
engine spiders can use to index all of your websites pages.
Here is an article
that explains ROR in detail.
Rotational Speed - As it concerns hard
drives, how fast the disk platter spins.
Router - A piece of network equipment that
make it possible to send data to the correct location.
Here is an
article all about routers |
Click here
for information about ADSL wireless routers.
RMP - Revolutions Per Minute
RS-232 - A asynchronous type of serial
communications port.
RS-422 - A digital type of serial
communications that allows data transmission at much greater distances versus
RS-232 connections.
RSS - Rich Site Summary or Remote Site
Syndication. Click
here for an article about how to use RSS and some tips.
RWM - Read Write Memory. An alternate name
for RAM.
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