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ABC of electronics terms

(To find chips for distinct functions, see the functional pages.)

R

Rack

Where	Manufacturer
www.vero-usa.com/	VERO Electronics (vero@iit.de)

See also Case and Enclosure

Radio, Amateur

nyquist.ee.ualberta.ca/pub/cookbook/rf/	Circuit examples
www.novia.net/~pschleck/elmers/	FAQ - Paul W. Schleck, K3FU
www.ham-links.org/	HAM radio links
www.k1dwu.net/k1dwulinks.html	HAM radio links
www.his.com/~knewman/	(?)
www.virginiatraditions.com/	Information on HAM's
www.tapr.com/	Information on amateur radio
www.ac6v.com/	Amateur Radio and DX Reference Guide
www.arrl.org/	National Association for Amateur Radio

Radio controlled off-road racing

• Mark R. Brown <mbrown@openmarket.com>
• www.geocities.com/MotorCity/2314/rc-faq.html

Radio, Packet

ftp.psyber.com/tcj/faqs/pktfaq.txt

ftp.psyber.com/tcj/faqs/pktprm1.txt

www.l0pht.com/~oblivion/radionet/

www.linuxdoc.org/HOWTO/AX25-HOWTO.html

RAM

Random Access Memory

Where	Manufacturer
www.electronic-designs.com/	EDI Electronic Designs Inc

RAMBUS

The future trend (in 1998) as a technology for PC memory after DRAM, FPDRAM* and SDRAM*.

See also:

Real Time Clock

The real time clock (RTC) is the part in a computer that keeps on running even when the power is removed from the computer to keep track of the real time (as opposed to the time of the system during power-on).
See local

Real Time OS

See Operating System

Refurbishing

Gently removing chips from old PCB's for reusage. More.

Register set

A set of registers used to program a peripheral.

Register set overviews of processors and peripherals

Regulator

Device to regulate a voltage or current.

local

Which low-drop 5V regulator to choose

Relay

Electrical device with which one current can interrupt another, traditionally consisting of a coil, a magnet and a switch.

local	Relays
www.rentron.com/Project5.htm	Programmable Relays

Where	Manufacturer
www.aromat.com/	Aromat
www.cpclare.com/	CP Clare
www.crydom.com/	Crydom
www.grayhill.com/	Grayhill
www.industry.net/omron/	Omron
www.ohmite.com/	Ohmite
www.opto22.com/	Opto22
www.techweb.com/	Omron
?	Teledyne
Bought by?	Zettler

Remote control

www.ee.washington.edu/eeca/circuits/

www.armory.com/~spcecdt/remote/remote.html

See also under InfraRed and IRDA...

Repair

www.anatekcorp.com/	Busiest commercial electronic repair site they claim
www.electronix.com/	Electronix Corporation
www.geocities.com/CapeCanaveral/6369/F_Repair_it.html	Italian version of the Repair FAQ by ik7nxq@geocities.com
www.repairfaq.org/	Repair FAQ
repairfaq.ece.drexel.edu/	news:sci.electronics.repair FAQ Main page
repairfaq.ece.drexel.edu/REPAIR/	Main Repair table of contents
repairfaq.ece.drexel.edu/sam/	Includes Sam's Laser FAQ
www.repairworld.com/	Repair World (about $8 per month)

Resistor

See:

local

More info in the Chipdir

RF

Radio Frequency

www.rfglobalnet.com/	RF GlobalNet (By VerticalNet)
www.rentron.com/RF-Remote.htm	RF Remote Control
www.geocities.com/jordan30bg	RF and microwave design by Jordan Strundjev

RFC

Request For Comments

Despite it's name, these are the official definitions of a lot of internet matters.

www.ietf.org/rfc.html	RFC standards
www.internic.net/	InterNIC
lists.netsol.com/archives/ (in new window)	Mailing lists at NetSolutions
www.icann.org/	Internet Corporation for Assigned Names and Numbers

RISC

Reduced Instruction Set Computing

local

What is RISC?

Riser Card

A riser card is normally used in a low profile case. Instead of the cards being perpendicular to the board, a riser card is used to make them parallel to the board, saving on the height. The riser card (short) is inserted to the mainboard perpendicular and the the others are inserted into the riser parallel to the main board.

Robot

Autonomically moving mechanical device. See the FAQ for the Czech origin of the word.

local

From a mailing list.

www.roguerobotics.com/	Rogue Robotics in Toronto, NEW
www.robotprojects.com/	Robot projects for enthusiasts
www.dprg.org/	Dallas Personal Robotics Group
www.frc.ri.cmu.edu/robotics-faq/	FAQ of news:comp.robotics.misc
www.iff.fhg.de/iff/aut/projects/schreit/mag_e.htm	Walking Robot Katharina
www.jashaw.com/pid/	Explanation of the PID algorithm
www.mil.ufl.edu/projects/	Machine Intelligence Laboratory
www.robotbooks.com/	Robot books
www.robotcafe.com/	Information related to hobby robotics
www.robotics.com/robomenu/	Robot Menu
www.robotics.com/robots.html	Arrick Robotics
www.robot.ireq.ca/CRR/	news:comp.robotics.research Home Page
www.tech-tools.com/esc_bot.htm	Schematics etc. for Tech-Bot
nis-www.lanl.gov/robot/	BEAM Robotics
www-robotics.cs.umass.edu/robotics.html	Robotics Internet Resources Page
wwwsyseng.anu.edu.au/rsl/	Robotic System Lab
www.industrycommunity.com/myforum/paul_sprunger/	Industrial Robotics Forum: Robotic applications, integration tips, programming tips, parts sources, for water jet, welding, dispensing, material handling, assembly etc.

Also check out Lego Mindstorm's:

• Robotic Invention System
• Robotics Discovery Set
• Extreme Creatures Expansion Set
• RoboSports Expansion Set

Books about robotica

Lego Mindstorm books:

title	order at Amazon USA	price indication
Dave Baum's Definitive Guide to LEGO Mindstorms (Technology In Action)	ISBN: 1893115097	$20
Extreme Mindstorms: an Advanced Guide to Lego Mindstorms	ISBN: 1893115844	$30
Lego Mindstorms for Dummies	ISBN: 0764507672	$20
Unofficial Guide to LEGO Mindstorms Robots, the	ISBN: 1565926927	$20

Other lists with links:

www.dprg.org/links.html

Dallas Personal Robotics Group, links

ROM

Read Only Memory

About the different kinds of ROM and how to program them.p
See also EEPROM, EPROM*, Flash, PROM*, ROM.

RS-232

Standard for transmitting serial data over a line from point to point.

local	More
www.wiesemann.de/us_index.html	Interface to ethernet
www.beyondlogic.org/	At 'Beyound Logic'
local	See also

RS-485

www.rs485.com/
Data Transmission Circuits Data Book from Texas Instruments	Contains a detailed RS485 exposure and practical drivers
Interface Circuits for TIA/EIA-485 Application note from TI	Application note

RTC

See Real Time Clock.

RTOS (Real Time Operating System)

See Operating System