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Topic: Parallel electronics

	Parallel import - Wikipedia, the free encyclopedia
		Parallel importation is synonymous with involvement in the grey market, and concerns issues of international trade.
		Parallel importers ordinarily purchase products in one country at a price (P1) which is cheaper than the price at which they are sold in a second country (P2), import the products into the second country, and sell the products in that country at a price which is usually between P1 and P2.
		Parallel importation is regulated differently in different jurisdictions; there is no consistency in laws dealing with parallel importation between countries.
	en.wikipedia.org /wiki/Parallel_import (1015 words)

	RadioShack Products Glossary: P
		Electronics: A method of making multiple electrical connections in which all of the positive leads are connected to one power terminal and all of the negative leads are connected to the other power terminal, so that the current has multiple paths to follow through the circuit.
		Electronics: A variable resistor with three terminals, a resistor and an actuator (the adjustment shaft or dial) that is used to tune a circuit by changing the resistance and potential when the actuator is adjusted.
		Electronics: A potentiometer with a resistance element composed of a conductive plastic with well-defined resistance characteristics, normally used for high-quality linear (slide) potentiometers and rotary potentiometers.
	support.radioshack.com /support_tutorials/glossary/glossary-p.htm (3655 words)

	Xtant Tech Support - Electronics
		Electrons have a unit negative charge, protons have a unit positive charge, and neutrons have no charge.
		When some kind of energy (electromagnetic, chemical, etc.) is applied, some of the electrons may be broken free, thus leaving an imbalance of protons and electrons in the atom.
		This potential difference is created from an excess of electrons at the source, and a lack of electrons, or positive charge, at the destination.
	www.xtant.com /html/techSupport/electronics.cfm (1749 words)

	Parellel port output
		If the parallel port is integrated to the motherboard (like in many new computers) repairing damaged parallel port may be expensive (in many cases it it is cheaper to replace the whole motherborard than repair that port).
		Parallel port relay relay board kit described at http://electronickits.com/kit/complete/elec/ck1601.htm comes with Windows and DOS control software that can be downloaded at the kit page.
		This parallel port type also implemented the same three registers as used by SPP for the control and monitoring of the data and handshaking lines; these are the data port, status port, and control port.
	www.epanorama.net /circuits/parallel_output.html (16202 words)

	Parallel digital processor - Patent 4901224
		A parallel processor according to claim 16 wherein said program sequencer during said output mode normally returns data to the same row of said main memory as used during the prior input mode but can return data to other rows offset therefrom in accordance with received instructions.
		With the system as thus far described, the parallelism in operation depends largely on the degree of parallelism in the problem being solved and is achieved at the expense of less efficient memory usage.
		In the system according to the invention the degree of parallel operation is greatly enhanced and made largely independent of parallelism in the problem being solved through the use of segmented lateral transfer buses and internal PPM switching configurations.
	www.freepatentsonline.com /4901224.html (9369 words)

	EMSNow - News Publishing
		As the "proverb" at the head of this article suggests, there is evidence Chinese electronics OEM services march to the beat of a different drummer.
		For example, the Chinese Electronics Corporation (CEC) and Great Wall of China, both major players in electronics OEM services through their myriad subsidiaries, recently were merged, creating a mega-company with on the order of $10 billion in sales.
		Electronics manufacturing in China generally is expected to rise perhaps 30-40 percent of total global electronics hardware production by 2010.
	www.emsnow.com /npps/story.cfm?ID=16161 (1299 words)

	Power from parallel port
		Suddenly the parallel port have become a port where you can connect very wide selection of devices like software protection dongles, removable disks, modems, network adapters, printer sharing units, parallel port extenders, soundcards, electronic telecard readers and many homebuilt circuits.
		In ordinary parallel port implementations the data outputs are 74LS374 IC totem-pole TTL outputs which can source 2.6 mA and sink 24 mA Usually the output of the chis is followed by 22 ohm resistors and 2.2-10 nF capacitor, but some implementations don't use that RC circuit.
		Very typical circuit which takes power from PC parallel port data lines through diodes is the telecard reader circuit presented in What you need to know about electronics telecards document.
	www.epanorama.net /circuits/lptpower.html (2879 words)

	Electronics Fundamentals 4A and 4B
		Parallel Circuits: Solve for the voltage across, current through, and power dissipated by elements in a parallel circuit.
		Parallel Circuits: Calculate and measure the voltage across, current through, and (calculate the) power dissipated by elements in a parallel circuit.
		Use the parallel resistor equations to solve for total parallel resistance and compare to measured total resistance.
	www.piercecollege.edu /departments/electronics/4dcfund.html (980 words)

	PARAPIN: A Parallel Port Pin Programming Library for Linux
		If possible, use a parallel port that is on an ISA card, instead of one integrated onto the motherboard, to minimize the expense of replacing a parallel port controller that you destroy.
		The number references the kernel's table of detected parallel ports; 0 is the first parallel port and is a safe guess as a default.
		The IRQ used by the parallel port hardware is usually configured in the BIOS setup screen on modern motherboards that have built-in parallel ports.
	parapin.sourceforge.net /doc/parapin.html (4332 words)

	DC Electronics - Kits
		Especially in multi-chip situations (parallel, bridged or parallel-bridged) heatsinking should be sufficient to ensure that thermal protection is engaged from the chip's limitations in transferring heat from the die to the heatsink rather than from the heatsink to the ambient air.
		The big advantage that comes from operating LM3886s in parallel is not so much having twice the output current available as it is having twice the heat dissipation capability (from the die to the heatsink).
		The important areas are the two resistors that determine the gain (the feedback resistor and the resistor to ground on the inverting input) and the load-sharing resistor on the output.
	www.dckits.com /app3.htm (2246 words)

	MICHAEL SIEGENTHALER \| Projects \| Parallel Port FPGA Interface
		The main goals of this project were to learn Verilog, to learn about buses, and to create a platform for future projects which require the parallelism and/or exact timing of an FPGA combined with the ease of programming of a general purpose PC.
		The DB-25 connector is the parallel port interface.
		For a mapping of FPGA pins to parallel port pins, please refer to the.ucf file contained in the Verilog code distribution and the EPP signal table at Beyond Logic.
	www.msigi.net /electronics-parallel.shtml (185 words)

	Solve over 160 basic electrical and electronics formulas with the Electronics Toolkit! (Site not responding. Last check: 2007-10-26)
		Containing over 160 of the most often used calculations in electrical and electronics applications, the Electronics Toolkit is a ready reference tool for anyone working in the fields of electronics and radio communication.
		Calculation of series and parallel inductance, energy stored in an inductor, series and parallel inductive reactance, frequency, inductance, and inductive reactance when the frequency and inductance are known.
		Calculation of series and parallel capacitance, charge and energy stored in a capacitor, series and parallel capacitive reactance, frequency, capacitance, and capacitive reactance when the frequency and capacitance are known.
	www.electoolkit.com /ElecToolkit/electoolkit.html (566 words)

	Electronics Question - Parallel Relay - MP3Car.com Forums
		From what I can tell from this schematic, the + pin 2 on the parallel triggers the transistor, feeding ground from pin 18 to the relay, activiating it.
		I have a 12V source on the other side of the relay coil.
		When I put my + probe on the 12V source, and - probe on the ground, i show about 7V, which I dont understand becaue the parallel port is set to off.
	www.mp3car.com /vbulletin/showthread.php?t=36075 (324 words)

	FEEE - Fundamentals of Electrical Engineering and Electronics: Parallel R, L, and C
		The fact that these components are connected in parallel instead of series now has absolutely no effect on their individual impedances.
		However, working through the parallel impedance equation with complex numbers is no easy task, with all the reciprocations (1/Z).
		This is especially true if you're unfortunate enough not to have a calculator that handles complex numbers and are forced to do it all by hand (reciprocate the individual impedances in polar form, then convert them all to rectangular form for addition, then convert back to polar form for the final inversion, then invert).
	www.vias.org /feee/xzrlc_04.html (393 words)

	RedOrbit - Technology - Cellphone import worry
		CONSUMERS are being warned to make sure their mobile phones are from authorised resellers after an incident where a battery in a parallel imported phone leaked.
		Brightpoint is seeking legal advice to establish what sort of marketing campaign could be undertaken to advise the public on the issues of parallel imported electronics, without raising the ire of the Commerce Commission or breaching the Fair Trading Act.
		Mr van Rensberg is keen for the Government to review legislation regarding parallel importing for the electronics industry.
	www.redorbit.com /news/display/?id=1069 (424 words)

	Massively parallel vector processing computer (US4891751)
		A massively parallel vector computer comprises a set of vector processing nodes, each node including a main processor for controlling access to a random access memory through an internal bus and a set of ports for interfacing external busses to the internal bus.
		The external busses interconnect pairs of nodes to form a network through which data may be transmitted from the random access memory in any one node to the random access memory in any other node in the network.
		vector processing means connected to said second bus for transmitting parallel data words to and receiving parallel data words from said vector memory means for generating output vectors comprising functions of input vectors stored in said vector memory means and for storing said output vectors in said vector memory means; and
	www.delphion.com /details?pn10=US04891751 (459 words)

	Bowden's Hobby Circuits
		A small collection of electronic circuits for the hobbyist or student.
		Electronics USA - LED Digital and Binary Clocks, LED Timers (Up and down counting), LED flashlights, and a few other items, as kits or assembled.
		Try posting a message with circuit details to one of the electronic newsgroups, either sci.electronics.basics or sci.electronics.design Many readers of those groups will offer ideas and a few specifics at no charge.
	ourworld.compuserve.com /homepages/Bill_Bowden/homepage.htm (1399 words)

	Beam Position Monitors
		The schematic of the readout electronics is shown in Figure 2.4.
		Event-by-event information from the BPMs are recorded in the CODA datastream from each of the 8 BPM antennas (2x4) from which the position of the beam can be reconstructed.
		However, these raw values belong to a parallel electronics chain whose constants have to be retrieved by calibrations to the EPICS or scanner data.
	hallaweb.jlab.org /document/OPMAN/node23.html (299 words)

	Parallel Port Specifications
		The PC parallel port usually consists of 25 pins in a DB-25 connector.
		That is, their directions are not individually controllable; they must be either all inputs or all outputs.
		If you need to use pins 2-9 as bidirectional or input pins, make sure your port is configured as a ``PS/2'' port or one of the other advanced port types; ports in SPP (Standard Parallel Port) mode may not support direction switching on pins 2-9.
	www.circlemud.org /jelson/software/parapin/docs/node2.html (419 words)

	Howstuffworks "How Parallel Ports Work"
		While USB is becoming increasingly popular, the parallel port is still a commonly used interface for printers.
		Parallel ports can be used to connect a host of popular computer peripherals:
		In this article, you will learn why it is called the parallel port, what it does and exactly how it operates.
	electronics.howstuffworks.com /parallel-port.htm (155 words)

	Parallel Electronics -- DataPro (Site not responding. Last check: 2007-10-26)
		Expand the power of your parallel port and devices with DataPro's parallel electronics.
		The DataPro 3020-201 is an electronic data switch which supports standard Centronics Parallel data transmission.
		The parallel compression buffer is used to buffer large print jobs or data transfer between two machines of different transfer rates.
	www.datapro.net /catalog/PARELE.html (247 words)

	Parallel ATA (PATA) Hard Drive Interfaces - Seagate Technology (Site not responding. Last check: 2007-10-26)
		Parallel ATA can be found in desktop PCs, Notebook, Consumer Electronics, and in some servers today.
		Serial ATA leverages the Parallel protocol and enhances it by serially moving data across a thinner more flexible cable.
		Until the complete transition from Parallel to Serial occurs many, many PCs will continue to ship and use Parallel ATA hard drives.
	www.seagate.com /products/interface/pata (165 words)

	Computerize Your Room/House
		I must also stress that this is a major project and should not be attempted unlesss you have a good understanding of electronics.
		This is much more complicated then the parallel port interface, mostly because of the address lines used by the computer to send data to different devices plugged into it's bus.
		These are available from Jameco Electronics (see Where To Get Parts).Connections are made with point to point soldering or wire wrap.
	www.aaroncake.net /circuits/crombuld.htm (1162 words)

	chet_floyd_electfun_6\|Parallel Circuits\|Electronics Workbench Circuit Simulation
		This example illustrates Kirchhoff’s current law and the fact that the parallel branch with the least resistance has the most current.
		The circuit is similar to the one in textbook Figure 5-37, with the voltage source adjusted to provide a total current of 100 mA.
		Verify that the sum of the branch currents is equal to the total current.
	wps.prenhall.com /chet_floyd_electfun_6/0,8242,1020266-,00.html (358 words)

	FEEE - Fundamentals of Electrical Engineering and Electronics: Simple parallel (tank circuit) resonance
		The ebook FEEE - Fundamentals of Electrical Engineering and Electronics is based on material originally written by T.R. Kuphaldt and various co-authors.
		What this means in practical terms is that, the total impedance of a tank circuit is infinite (behaving as an open circuit) at resonance.
		The total impedance of a parallel LC circuit approaches infinity as the power supply frequency approaches resonance.
	www.vias.org /feee/resonant_03.html (826 words)

	PLTW - Digital Electronics - Simple Parallel Circuit (Site not responding. Last check: 2007-10-26)
		Keep in mind that you should be familiar with all of the relationships of a parallel circuit which are:
		In) are equal to It (the total current) in a parallel circuit.
		The power total dissipated in Watts in a parallel circuit is the sum of all power dissipated in the circuit.
	home.comcast.net /~teachcte/electron/parall-a.htm (242 words)

	NEC Electronics Unveils Industry's First Mobile Phone Application Processor with Parallel Processing Capabilities
		The new product leverages NEC Electronics’ parallel processing and low power consumption technologies, enabling high performance multimedia processing such as terrestrial digital broadcast reception, videophone, and music playback while maintaining low power consumption.
		Includes NEC Electronics’ proven digital signal processor (DSP), with industry-leading sales of more than 160 million units in Japan, which allows optimal processing of multimedia applications via software.
		“Parallel processing technology is a key to enabling enhancement of future applications, especially those that require both high performance and low power consumption,” stated Yoshiharu Tamura, General Manager, Mobile Terminal Unit, NEC Corporation.
	www.us.design-reuse.com /news/news8779.html (959 words)

	Re:NEC Printer/Compaq Laptop - CNET Peripherals Forums
		The owner paid dearly as I charged them for the priviledge of a lesson in electronics, schematics, parallel interfaces and the use of an oscilloscope as well as the loopback parallel port tester.
		Not that I didn't mind, but they wanted "proof" the parallel port was dead.
		It was only 100 for the hour, but they were not so upset but that the laptop parallel port is only repaired by changing the motherboard...
	reviews.cnet.com /5208-7590-0.html?forumID=67&threadID=8493&messageID=99330 (222 words)

	parapin -- a Parallel Port Pin Programming Library for Linux
		If possible, use a parallel port that is on an expansion card, instead of one integrated onto the motherboard, to minimize the expense of replacing a parallel port controller that you destroy.
		The C-library version of Parapin should probably do better probing of the parallel port, but my desire to do this was limited because it replicates what is already done by the Linux kernel.
		The parapin project is proud to be hosted on SourceForge, and thanks the entire SourceForge team for their services and dedication to open-source software.
	parapin.sourceforge.net (638 words)

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