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Back in 1985 in response to the increasing density of then new electronics packaging technologies, test engineers from the major silicon vendors in Europe formed the Joint European Test Action Group and set about forming proposals for a new way of testing electronic devices mounted on a printed circuit board. In 1986 the group expanded [...]
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SEO AutoSense The AutoSense I system was developed by SEO under a Department of Transportation Small Business Innovative Research (SBIR) effort as a replacement for buried inductive loops for traffic signal control. (Inductive loops don’t always sense motorcyclists and some of the smaller cars with fiberglass or plastic body panels, and replacement or maintenance can [...]
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The JTAG programming interface works much the same way as the two other programming interfaces. The same functionality and restrictions apply. The main thing to remember if you want to use the JTAG for programming is to set the Lock bits correctly. Setting the JTAGEN will not do you any good if you have disabled [...]
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Radio-frequency identification (RFID) is an automatic identification method, relying on storing and remotely retrieving data using devices called RFID tags or transponders. Utilizing radio frequency waves, an RFID tag can be applied to or incorporated into a product for the purpose of location and identification. UHF Passive RFID can be read from several meters away [...]
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An embedded system is a combination of computer hardware and software, and perhaps additional mechanical or other parts, designed to perform a specific function. A good example is the microwave oven. Almost every household has one, and tens of millions of them are used every day, but very few people realize that a processor and [...]
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In addition to forward voltage drop (Vf) and peak inverse voltage (PIV), there are many other ratings of diodes important to circuit design and component selection. Semiconductor manufacturers provide detailed specifications on their products — diodes included — in publications known as datasheets. Datasheets for a wide variety of semiconductor components may be found in [...]
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Fuzzy logic is an increase of Boolean logic dealing with the concept of partial truth. Where is the logic of classical states that everything that can be expressed in terms of binary (0 or 1, black or white, yes or no), fuzzy logic replaces Boolean truth with a level of truth. Fuzzy logic allows the membership [...]
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A solar cell is a device that converts the energy of sunlight directly into electricity by the photovoltaic effect. Sometimes the term solar cell is reserved for devices intended specifically to capture energy from sunlight such as solar panels and solar cells, while the term photovoltaic cell is used when the light source is unspecified. [...]
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• Micron DigitalClarityTM CMOS imaging technology • Array Format (5:4): 1,280H x 1,024V (1,310,720 active pixels). Total (incl. dark pixels): 1,312H x 1,048V (1,374,976 pixels) • Frame Rate: 30 fps progressive scan; programmable • Shutter: Electronic Rolling Shutter (ERS) • Window Size: SXGA; programmable to any smaller format (VGA, QVGA, CIF, QCIF, etc.) • Programmable [...]
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by : Walt Pyle, Alan Spivak, Reynaldo Cortez, and Jim Healy A gas fed battery that never needs recharging! This article describes a process for building a fuel cell using tools and techniques any skilled hobbyist with a wellequipped shop can duplicate. The fuel cell that we built can produce direct current electricity from stored [...]
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Pure semiconductors are relatively good insulators as compared with metals, though not nearly as good as a true insulator like glass. To be useful in semiconductor applications, the intrinsic semiconductor (pure undoped semiconductor) must have no more than one impurity atom in 10 billion semiconductor atoms. This is analogous to a grain of salt impurity [...]
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It is also possible to use the decibel as a unit of absolute power, in addition to using it as an expression of power gain or loss. A common example of this is the use of decibels as a measurement of sound pressure intensity. In cases like these, the measurement is made in reference to [...]
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AT89S52 MICROCONTROLLER
connecting microcontroler and computer with usb comunication
OPERATIONAL AMPLIFIERS : part 2 (The "operational" amplifier)
Sensor Signal Conditioning : bridge circuit part1
Serial Peripheral Interface (SPI) in AVR ATMega 8535
Wireless Microcontroller : Jennic JN5148-001
How hydropower work?
all about electronic cigarette
Neural Network
Programmable Logic Controller