Automatic Street Light Control INTRODUCTION TO EMBEDDED SYSTEMS An embedded system can be defined as a computing device that does a specific focused job. Appliances such as the air-conditioner‚ VCD player‚ DVD player‚ printer‚ fax machine‚ mobile phone etc. are examples of embedded systems. Each of these appliances will have a processor and special hardware to meet the specific requirement of the application along with the embedded software that is executed
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building communications can be built using the following three basic component. A light emitting element. 1. A light emitting element‚ which could be a laser diode or light emitting diode. 2. Transmission media such as optical fiber cable or free space. 3. A light receiving element‚ which could employ avalanche photo-diode‚ PIN photo-diode or any other light sensors like LDR. Since the communications performance of the system depends on the overall characteristics of the above elements‚ the characteristics
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optimize power consumption versus processing speed. 1N4148 DIODE The 1N4148 and 1N4448 are high-speed switching diodes fabricated in planar technology‚ and encapsulated in hermetically sealed leaded glass SOD27 (DO-35) packages. BC548 This device is designed for use as general purpose amplifiers and switches requiring collector currents to 300 mA. DIMMING CIRCUIT Q4010LT TRIAC 10 A 400 V Isolated Bidirectional TRIAC - TO-220 DIODE 1N4006 This standard rectifier is designed for general purpose
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semi-conductor‚ the importance of which will be explained later. Once power reaches the microchip‚ it distributes it to different portions of the mouse including two contact switches‚ a scrolling wheel‚ the switch on the wheel‚ and a light emitting diode (LED). Before reaching any of these portions of the mouse‚ however‚ the current must flow through a series of mica capacitors‚ electrolytic capacitors‚ and resistors. In this mouse‚ five capacitors (two mica‚ three electrolytic) and one resistor
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System Contents • Electronic Flight Information Systems (EFIS) • Primary Flight Display (PFD) • Navigational Display (ND) • Engine Indication and Crew Alert System (EICAS) • Cathode Ray Tube (CRT) • Liquid Crystal Display (LCD) • Light Emitting Diode (LED) Electronic Flight Information System • An Electronic Flight Information System (EFIS) is a flight deck instrument system in which it uses electronic to display instead of electromechanical. • The Electronic system display the primary flight
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DICE . TO CONSTRUCT AN ELECTRONIC DICE USING LEDS . BACKGROUND: LED’s History The first known report of a light-emitting solid-state diode was made in 1907 by the British experimenter H. J. Round. However‚ no practical use was made of the discovery for several decades. Independently‚ Oleg Vladimirovich Losev published "Luminous carborundum [[silicon carbide]] detector and detection with
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BRIEF DESCRIPTION OF DIWALI LIGHTS The Basic Circuit [pic] FIGURE 1 As you can see in the above diagram that IC LM4017 will give 10 different O/P’s. Now here I have used this circuit for a 5 Channel Sequencer (The word sequencer seems very tough but the circuit is as simple as you can think). Looking at the Data Sheet of IC LM4017 we observe that we do not need any extra components to drive this IC (and that is what makes our CKT very compact). [pic] Now build 11 circuits as
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Taiwan Industry Reports Taiwan Institute of Economic Research 21June 2008 Organic Light-Emitting Diode (OLED) Panels Ref. Code: 11461 21 June 2008 By Ceng Chun-chou Overview Encouraged by a good performance of organic light-emitting diode (OLED)‚ a large number of Taiwan firms have aggressively developed OLED products in recent years. But a bottleneck in technology has led to no major breakthrough in capacity‚ resulting in firms’ long-term losses and compelling some to stop research and
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chapter 1 intaoduction “Driving to save lives‚ time‚ and money in spite of the conditions around you and the actions of others.”- This is the slogan for Defensive Driving. Vehicle accidents are most common if the driving is inadequate. These happen on most factors if the driver is drowsy or if he is alcoholic. Driver drowsiness is recognized as an important factor in the vehicle accidents. It was demonstrated that driving performance deteriorates with increased drowsiness with resulting crashes
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CIRCUIT IDEAS FUEL RESERVE INDICATOR FOR VEHICLES D. MOHAN KUMAR ere is a simple circuit for monitoring the fuel level in vehicles. It gives an audiovisual indication when the fuel level drops alarmingly below the reserve level‚ helping you to avoid running out of petrol on the way. Nowadays vehicles come with a dash-mounted fuel gauge meter that indicates the fuel levels on an analogue display. The ‘reserve’ level is indicated by a red marking in some vehicles‚ but the needle movement through
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